172.585 Sugar beet extract flavor base. Not to exceed 0.02% of dehydrated fruits and vegetables. A particular type of hops contains 15.4 % m/m acids. Because some of the polynuclear hydrocarbons sought in this test are very susceptible to photo-oxidation, the entire procedure is to be carried out under subdued light. It is prepared by reaction with not more than 7 parts hydrated lime per 100 parts of partially dimerized rosin. Phenyl-2-Propanone from Benzylchloride (via dibenzyl cadmium)20,30,31, 2 PhCH2MgCl + CdCl2 (PhCH2)2Cd + 2 MgCl2, (PhCH2)2Cd + 2 CH3COCl 2 PhCH2COCH3 + CdO. of said oil at aspirator vacuum, the yield was around 60-70% of phenyl-2-propanone (P2P) as a light yellow oil. (2) The additive shall be derived only from species of bony fish that are generally recognized by qualified scientists as safe for human consumption and that can be processed as prescribed to meet the required specifications. A fixed mass of an ideal gas has a volume of 800 cm3 under certain conditions. 2 Mg (s) + CO (g) C (s) + 2 MgO (s). When we balance chemical equations why do we use moles? N- (4-Hydroxy-3-methoxybenzyl)-nonanamide; pelargonyl vanillylamide. (a) Sucralose is the chemical 1,6-dichloro-1,6-dideoxy-[beta]-D-fructofuranosyl-4-chloro-4-deoxy-[alpha]-D-galactopyranoside (CAS Reg. Copies are available from the Office of Food Additive Safety (HFS-200), Food and Drug Administration's Main Library, 10903 New Hampshire Ave., Bldg. 125-milliliter with 24/40 standard taper neck. (2) Acid value, not greater than 2, and hydroxyl value, not greater than 56, as determined by the methods entitled "Acid Value," p. 1220 and "Hydroxyl Value," p. 1223, respectively, in the Food Chemicals Codex, 7th ed. the formed Phenyl-2-Propanone dimethyl acetal. Xylitol may be safely used in foods for special dietary uses, provided the amount used is not greater than that required to produce its intended effect. HCl and 100 cc. covered and protected from air. Consisting of polymers of [alpha]-pinene; softening point minimum 155 deg.C, determined by U.S.P. (4) [alpha]-Hydro-omega -hydroxy-poly(ox-yethylene) poly (oxypropylene)-(51-57 moles) poly(oxyethylene) block copolymer, having an average molecular weight of 14,000 and a cloud point above 100 deg.C in 1 percent aqueous solution. (b) The food additive has a Reichert-Meissl value of 75-200 and an acid value of less than 6. (6) Arsenic is not more than 3 parts per million. 59-30-3), also known as folacin or folate, may be safely used in food as a nutrient in accordance with the following prescribed conditions: (a) Folic acid is the chemical N -[4-L -glutamic acid. Weigh the flask. Release pressure after mixing, then keep funnel stoppered.) (2) It meets the test requirements of U.S.P. and then the mixture is poured onto crushed ice (100-150g is probably a suitable amount). Zwitterions are widely applied in the process of separating protein molecules via SDS PAGE (sodium dodecyl sulfate-polyacrylamide gel electrophoresis) method which is one of the most popular techniques used in molecular biology. Q: Exercise: The volume of 1 mole of Helium (He) gas at different temperature values is given in the A: by plotting the graph of Helium gas vs Temperature: Q: An aqueous solution of lead acetate, , contains 12.1 grams of lead acetate and 17.3 grams of water. Percent by mass = #"mass of solute"/"total mass of solution"# 100 % Example. cooled in ice/water. If the corrected absorbance does not exceed the limits prescribed in paragraph (b)(1)(ii) of this section, the sample meets the ultraviolet absorbance specifications for hydrocarbon solvent. The finished food starch-modified is limited to use only as a component of batter for commercially processed foods. (d) The carrageenan and salts of carrageenan so produced are not used in foods for which standards of identity exist unless the standards provide for the use of carrageenan, or salts of carrageenan, combined with polysorbate 80. The food additive ethyl cellulose may be safely used in food in accordance with the following prescribed conditions: (a) The food additive is a cellulose ether containing ethoxy (OC2H5) groups attached by an ether linkage and containing on an anhydrous basis not more than 2.6 ethoxy groups per anhydroglucose unit. You may obtain copies from the United States Pharmacopeial Convention, 12601 Twinbrook Pkwy., Rockville, MD 20852 (Internet address: http://www.usp.org ). Repeat the extraction operation with two additional portions of the sulfoxide-acid mixture, replacing the funnel in the jacket after each extraction to keep the wax in solution and washing each extractive in tandem through the same three portions of isooctane. The following conditions shall be employed with the Varian Aerograph 600 D gas chromatograph: Carrier gas (nitrogen) flow rate: 70 milliliters per minute. Determination of percent water (%HO) in hydrated FeSO4nHO is .(1). Spectrophotometer. #1.20 cancel("g Al") "1 mol Al"/(26.98 cancel("g Al")) = "0.044 48 mol Al"#, #2.40 cancel("g I") ("1 mol I"_2)/(253.8 cancel("g I")) = "0.009 456 mol I"_2#. Total citric acid (free and combined), 14 percent-17 percent. H2O2/K2CO3 a white, sticky precipitate forms, which can be a bit too thick for a weak magnetic stirrer to handle, so the mass can be stirred with a glass Be prepared to stop addition and cool if needed. (This absorbance is obtained by approximately 0.03 milligram solids permilliliter.) Sodium salt of dehydroacetic acid: Assay, minimum 98 percent (dry basis). (d) To compensate for any interference with absorption of fat soluble vitamins, the following vitamins shall be added to foods containing olestra: 1.9 milligrams alpha-tocopherol equivalents per gram olestra; 51 retinol equivalents per gram olestra (as retinyl acetate or retinyl palmitate); 12 IU vitamin D per gram olestra; and 8 [micro]g vitamin K1 per gram olestra. To a mixture of 136 g (1.0 mol) phenylacetic acid, 70 g sodium or potassium ), P. candicans Ait., or P. nigra L, Picrasma excelsa (Sw.) Planch, or Quassia amara L, Aspidosperma quebracho-blanco Schlecht, or (Quebrachia lorentzii (Griseb)), Krameria triandra Ruiz et Pav. 3-(-Isopropylphenyl)-propionaldehyde; -isopropylhydrocinnamaldehyde; cuminyl acetaldehyde. over phsphorus pentoxide. Residual manganese (calculated as Mn), not to exceed 50 parts per million in food starch-modified. (2) The maximum iodine value is 3.0, as determined by A.O.C.S. Dilute 120 milliliters of dimethyl sulfoxide with 240 milliliters of distilled water in a 500-milliliter separatory funnel, mix and allow to cool for 5-10 minutes. Liquid egg whites, 125 parts per million. Anoxomer as identified in this section may be safely used in accordance with the following conditions: (a) Anoxomer is 1,4-benzenediol, 2-(1,1-dimethylethyl)-polymer with diethenylbenzene, 4-(1,1-dimethyl-ethyl)phenol, 4- methoxyphenol, 4,4'-(1-methylethylidene)bis(phenol) and 4-methylphenol (CAS Reg. What is the stoichiometric ratio between sodium carbonate and carbon dioxide? The temperature in Kelvin of 2.0 dm 3 of an ideal gas is doubled and its pressure is increased by a factor of four. 4. If 8 moles of magnesium chloride react with enough aluminum, how many moles of aluminum chloride are produced? The change in the reaction rate can be measured based on the kinetic isotope effect. Silicon tetrachloride (#SiCl_4#) can be prepared by heating #Si# in chlorine gas: #Si (s) + 2Cl_2(g) -> SiCl_4(l)#. (2010), pages 28, 29, 69, 70, 71, 269, 270, 271, 440, 457, 458, 544, 545, 577, 578, 598, 599, 641, 642, 643, 697, 698, 794, 795, 864, 865, 915, 916, 1031, 1032, 1060, 1061, and 1072. (1) Protein content, as N * 6.25, shall not be less than 90 percent by weight of the final product, as determined by the method described in section 2.057, Improved Kjeldahl Method for Nitrate-Free Samples (20) - Official Final Action. Methyl [alpha]-ionone; 5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-4-penten-3-one. 2H(g) + O(g) 2HO(g) The mole ratio between O and HO is #(1 mol O)/(2 mol HO)#.. What is the mole fraction of solute in a 3.37 #m# aqueous solution? Required fields are marked *. What is the percentage of sand in this mixture? #c_(volume)% = V_(solute)/(V_(solute) + V_(solvent)) * 100%#. Beverages and desserts prepared from dry mixes. Methyllithium addition to Phenylacetic Acid27. How many moles of #CO# and #O_2# are required to produce 10 moles of #CO_2# in the reaction #2CO + O_2 -> 2CO_2#? O-H (b) They are used as emulsifiers, plasticizers, or surface-active agents in the following foods, when standards of identity do not preclude their use: (c) They are used in an amount not greater than required to produce the intended physical or technical effect, and they may be used with shortening and edible fats and oils when such are required in the foods identified in paragraph (b) of this section. The Director of the Office of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. Calculate the percentage purity of #H_2O_2#? and other Pinus spp. 50 g phenylacetic acid, 25 g anhydrous sodium acetate and 850 ml acetic anhydride are refluxed with stirring under moisture protection for 40 h. 500 ml Remove the reservoir and decant the 5-milliliter isooctane concentrate solution onto the column and with slight pressure again allow the liquid level to recede to barely above the adsorbent level. suction filtration and washed four times on the funnel with 250 ml portions of water. No. chloride), the remaining benzyl chloride, the toluene which is a byproduct of the reduction of benzyl chloride, and phenyl-2-propanone, both in free form What, A:A balanced chemical equation contain equal number of atoms of each elements on both sides of the, Q:Predict cell potential under nonstandard conditions. Acid number of 134-145; drop-softening point of 127 deg.C-173 deg.C; saponification number of less than 280; and a color of M or paler. 2, Third Floor, Silver Spring, MD 20993, 301-796-2039, or at the National Archives and Records Administration (NARA). If 3.00 moles of #H_2O# are produced, how many grams of hydrogen gas are used? As a stabilizer in mono- and diglycerides prepared by the glycerolysis of edible fats or oils. 250-milliliter and 500-milliliter capacity. If I drink a glass of milk with a volume of 250 mL, what volume of milk fat have I consumed? 172.866 Synthetic glycerin produced by the hydrogenolysis of carbohydrates. [42 FR 14491, Mar. No. For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. The food additive dehydroacetic acid and/or its sodium salt may be safely used in accordance with the following prescribed conditions: (a) The food additive meets the following specifications: Dehydroacetic acid: Melting point, 109 deg.C-111 deg.C; assay, minimum 98 percent (dry basis). (3) Phenol content: Not less than 3.2 milliequivalent/gram and not more than 3.8 milliequivalent/gram as determined by a method entitled "Total Phenols," 1982, which is incorporated by reference. -Nonalactone; 4-hydroxynonanoic acid, -lactone; aldehyde C-18. Copies are available at locations cited in paragraph (b)(1) of this section. (5) Heavy metals (as Pb), not more than 0.002 percent. According to the following reaction how many moles of carbon dioxide will be formed upon the complete reaction of 28.2 grams of carbon (graphite) with excess oxygen gas? B = milligrams of ethylene glycol per milliliter of standard solution. Not to exceed 0.45 percent by weight of the finished whipped vegetable oil toppings. Lithium Hydroxide reacts with Carbon Dioxide as follows. For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. An aqueous solution of 4.62 M potassium bromide, KBr, has a density of 1.37 g/mL. 3/16-inch thick with a hole bored in the center to closely fit the stem of the chromatographic tube. The food additive calcium lactobionate may be safely used in food in accordance with the following prescribed conditions: (a) The food additive is the calcium salt of lactobionic acid (4-([beta],D-galactosido)-D-gluconic acid) produced by the oxidation of lactose. Dissolve the 1 milliliter of hexadecane in isooctane and make to 25-milliliter volume. The food additive kelp is the dehydrated, ground product prepared from Macrocystis pyrifera, Laminaria digitata, Laminaria saccharina, and Laminaria cloustoni. To reduce 16 ounces of a 25% solution of antiseptic to a 10% solution, how much distilled water should a nurse add? Calculate the number of liters of water vapor produced when 25.0 liters of oxygen gas are consumed? The Lead(II)Acetate can be substituted with Calcium(II)Acetate, making the synthesis more environmentally friendly. (b) The solutions consist of one of the following, to which may be added components generally recognized as safe and components which are permitted by prior sanction or approval. What is the molar ratio of #Li# to #N_2# in the reaction #6Li + N_2 -> 2Li_3N#? If the characteristic benzene peaks in the 250 to 260 millimicron region are present, remove the benzene by the procedure described above under "Reagents and Materials," "Organic Solvents," and record absorbance again. What is the percent by volume of ethanol in the solution? Is the solution saturated, unsaturated, or supersaturated? The absorbance per centimeter path length shall not exceed 0.00 in this range. What type of reaction is this? Then wash the second and first separatory funnels successively with a 10-milliliter portion of isooctane, and pass the solvent through the sodium sulfate into the flask. Polyacrylamide containing not more than 0.2 percent of acrylamide monomer may be safely used as a film former in the imprinting of soft-shell gelatin capsules when the amount used is not in excess of the minimum required to produce the intended effect. You may obtain a copy from the Office of Food Additive Safety, 5001 Campus Dr., College Park, MD 20740, or you may examine a copy at the Food and Drug Administration's Main Library, 10903 New Hampshire Ave., Bldg. What is the mole fraction of methanol in a solution that contains 6.0 mol of methanol and 3.0 mol of water? For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. (6) Total nitrogen, not more than 0.2 percent. [46 FR 38072, July 24, 1981, as amended at 47 FR 53344, Nov. 26, 1982; 54 FR 24897, June 12, 1989]. *Response times may vary by subject and question complexity. What is the concentration of a 1.2 % m/m solution of albumin in milligrams per millilitre? Then, with good stirring, 7.6g (0.2 mole) of NaBH4 was added a little at the time, and the temperature was not allowed to to rise (bp 91-96C at 11 mmHg) to give 5.6g (62%) of phenyl-2-propanone. The fish shall be handled expeditiously under sanitary conditions. [74 FR 11478, Mar. (d) Synthetic petroleum wax may contain any antioxidant permitted in food by regulations issued in accordance with section 409 of the act, in an amount not greater than that required to produce its intended effect. Citronellal; 3,7-dimethyl-6-octenal; rhodinal. Menthol; 2-isopropyl-5-methylcyclohexanol. Cuminaldehyde; cuminal; p- isopropyl benzaldehyde. 2, 1996; 62 FR 30985, June 6, 1997; 63 FR 57597, Oct. 28, 1998; 65 FR 64605, Oct. 30, 2000; 65 FR 79719, Dec. 20, 2000; 72 FR 46564, Aug. 21, 2007; 78 FR 71464, Nov. 29, 2013]. How many grams of solute are in #"2.5 L"# of a solution which is #"20% w/v"# ? 2 product surface area. You may obtain copies from the United States Pharmacopeial Convention, 12601 Twinbrook Pkwy., Rockville, MD 20852 (Internet address http://www.usp.org ). 172.765 Succistearin (stearoyl propylene glycol hydrogen succinate). Folic acid (CAS Reg. (2). A second distillation gives 50-55% yield of product boiling at 210-215C at atmospherical pressure. Nerol; cis- 3,7-dimethyl-2,6-octadien-1-ol. The food additive fatty acids may be safely used in food and in the manufacture of food components in accordance with the following prescribed conditions: (a) The food additive consists of one or any mixture of the following straight-chain monobasic carboxylic acids and their associated fatty acids manufactured from fats and oils derived from edible sources: Capric acid, caprylic acid, lauric acid, myristic acid, oleic acid, palmitic acid, and stearic acid. C) 1 mole of potassium. 100 at 13 mm. [alpha]-Methylbenzyl formate; styralyl formate. Density of ethanol =0.79g/ml kf=-1.86C/m. How much water should be added to make the solution 14% salt? molar mass of Copies may be examined at the Food and Drug Administration's Main Library, 10903 New Hampshire Ave., Bldg. How many grams of solute are present in a #"1500-g"# sample of a #3.62%# by mass solution of sodium hypochlorite? Fehlings solution B Dissolve sodium potassium tartrate and sodium hydroxide in 150ml of distilled water. Add 10 milliliters of methyl alcohol and approximately 0.3 gram of sodium borohydride. Active oxygen obtained from hydrogen peroxide and/or peracetic acid, not to exceed 0.45 percent of active oxygen, Ammonium persulfate, not to exceed 0.075 percent and sulfur dioxide, not to exceed 0.05 percent, Chlorine, as calcium hypochlorite, not to exceed 0.036 percent of dry starch. (c) It is used or intended for use: (1) In maturing and bleaching of flour in a quantity not more than sufficient for such effect; and (2) as a dough-conditioning agent in bread and roll production at not to exceed the quantity of hydrogen peroxide equivalent necessary for the artificial maturing effect. C5H11NO2S "DL-methionine" - 46 to 50 percent. 4. For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. (3) Adequate directions for use to ensure compliance with this section. [42 FR 14491, Mar. Isoeugenyl ethyl ether; 2-ethoxy-5-propenyl-anisole; ethyl isoeugenol. 172.833 Sucrose acetate isobutyrate (SAIB). 172.785 Listeria-specific bacteriophage preparation. Emily mixed together 9 gal. For information on the availability of this material at NARA, call 202-741-6030 or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. (1) It is used in an amount not greater than that required to produce the intended physical or technical effect. You may obtain copies from the United States Pharmacopeial Convention, 12601 Twinbrook Pkwy., Rockville, MD 20852 (Internet address: http://www.usp.org ). 225 grams of #NH_4NO_3# in 2.5 liters of water has what concentration? 62. In one mole of freon (#C Cl_2F_2#), what is the chemical ratio of carbon to chlorine to fluorine? It is added prior to clarification when further processing of the sugar cane juice must be delayed. What is the concentration with respect to #g*L^-1# of a solution prepared by dissolving #1.72*g# of #"potassium permanganate"# in #60.0*mL# of water? Sucrose acetate isobutyrate may be safely used in foods in accordance with the following prescribed conditions: (a) Sucrose acetate isobutyrate (CAS Reg. p- Mentha-1,8-dien-7-ol; perillyl alcohol. Synthetic isoparaffinic petroleum hydrocarbons may be safely used in food, in accordance with the following conditions: (a) They are produced by synthesis from petroleum gases and consist of a mixture of liquid hydrocarbons meeting the following specifications: Boiling point 93-260 deg.C as determined by ASTM method D86-82, "Standard Method for Distillation of Petroleum Products," which is incorporated by reference. [46 FR 30081, June 5, 1981, as amended at 59 FR 37421, July 22, 1994; 60 FR 54425, Oct. 24, 1995; 61 FR 14480, Apr. Vacuum distillation of this oil Our concentration by mass will be, #c% = (10.0g)/(10.0g + 100.0g) * 100% = 9.09%#, Now let's try doubling the mass of the solute; the new concentration will be, #c% = (2 * 10.0g)/(2*10.0g + 100.0g) * 100% = 16.7%#, However, if we keep the mass of the solute at 10.0g and doubled the mass of the solvent (in this case, water), the concentration will be, #c% = (10.0g)/(10.0g + 2*100.0g) * 100% = 4.76%#. The fatty acids used in the production of the polyglycerol esters meet the requirements of 172.860(b), and the polyglycerol esters are used at a level not in excess of the amount required to perform its cloud-inhibiting effect. Finally, add 150 milliliters of 10 percent 1,2-dichloroethane for a total of 200 milliliters. In bakery products; as release agent and lubricant. (3) Final boiling point is 650 deg.F maximum. Reflux the mixture for 3 hours. 15, 1977, as amended at 42 FR 37973, July 26, 1977; 50 FR 49536, Dec. 3, 1985]. 128.2, Q:1. This isotope of hydrogen contains 1 proton, 1 electron, and 2 neutrons. Moles of NaOH = 15.0 g NaOH #(1"mol NaOH")/(40.00"g NaOH")# = 0.375 mol NaOH, Volume = 225 mL #(1"L")/(1000"mL")# = 0.225 L soln, Molarity = #(0.375"mol")/(0.225"L")# = 1.67 mol/L. Having an acid number of 3-10, a minimum drop-softening point of 79 deg.C, and a color of N or paler. Calculate the molar solubility of silver iodide. Before proceeding with analysis of a sample, determine the absorbance in a 5-centimeter path cell between 250 m[micro] and 400 m[micro] for the reagent blank by carrying out the procedure, without a wax sample, at room temperature, recording the spectra after the extraction stage and after the complete procedure as prescribed. (b) It is used or intended for use as a crystallization inhibitor in vegetable oils and as a release agent in vegetable oils and vegetable shortenings, whereby the additive does not exceed 0.125 percent of the combined weight of the oil or shortening. (2010), p. 1154-1155. State and explain what would happen to the pressure of a given mass of gas when its absolute temperature and volume are both doubled. Calcium silicate, including synthetic calcium silicate, may be safely used in food in accordance with the following prescribed conditions: (a) It is used as an anticaking agent in food in an amount not in excess of that reasonably required to produce its intended effect. (ii) Fat-soluble vitamins in vitamin and vitamin-mineral preparations containing no calcium caseinate, whereby the maximum intake of polysorbate 80 shall not exceed 300 milligrams from the recommended daily dose of the preparations. What is the weight/weight % or percent by mass of the solute? (d) When the additive is used or intended for use in the household as a protein supplement in food for regular consumption by children up to 8 years of age, the amount of the additive from this source shall not exceed 20 grams per day (about one heaping tablespoon). Place 100 grams of the magnesium oxide in a large beaker, add 700 milliliters of distilled water to make a thin slurry, and heat on a steam bath for 30 minutes with intermittent stirring. oz. After the solution had reached room temperature, water was slowly added. (d) When neotame is used as a sugar substitute tablet, L-leucine may be used as a lubricant in the manufacture of tablets at a level not to exceed 3.5 percent of the weight of the tablet. Using benzyl cadmium chloride or dibenzyl cadmium gave little difference in yield. containing salts and undissolved salts. (1980), which is incorporated by reference. How many moles of #CoO(s)# will be formed for every mole of #CoCl_2 * 6H_2O(s)#? What molar ratio of sodium acetate to acetic acid should be used to prepare a buffer with pH = 4.5? Break up the magnesia with a clean spatula and spread out the absorbent on the aluminum foil in a layer about 1 centimeter to 2 centimeters thick. 552(a) and 1 CFR part 51. Copies are available from the Center for Food Safety and Applied Nutrition (HFS-200), Food and Drug Administration, 5001 Campus Dr., College Park, MD 20740, or available for inspection at the National Archives and Records Administration (NARA). (1) The additive achieves a positive lytic result (OD600 ?0.06) when tested against any of the following L. monocytogenes isolates available from American Type Culture Collection (ATCC): ATCC 35152 (serogroup 1/2a), ATCC 19118 (serogroup 4b), and ATCC 15313 (serogroup 1/2b). For information on the availability of this material at NARA, call 202-741-6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html. What is the final volume of the gas? [63 FR 16433, Apr. 172.816 Methyl glucoside-coconut oil ester. 3.0 dm3 of SO2 is reacted with 2.0 dm3 of Oxygen according to the equation. Calculate the molarity of a 23.55-mL solution which contains 28.24 mg of sodium sulfate (used in dyeing and printing textiles, = 139.04 g/mol). (b) Synthetic petroleum wax meets the ultraviolet absorbance limits of 172.886(b) when subjected to the analytical procedure described therein. The organic phase was dried over MgSO4, filtered with suction, and the solvent removed under vacuum to give a clear yellow oil. Mix the contents well, then transfer to the first separatory funnel and wash twice with 50-milliliter portions of distilled water. A solution is made by mixing equal masses of methanol, #CH_4O#, and ethanol, #C_2H_6O#. 19, 1982; 48 FR 55728, Dec. 15, 1983; 49 FR 10105, Mar. The anode is made of magnesium or aluminium, the cathode of nickel, the solvent is DMF (110g) and the supporting electrolyte is 3-neck rb. A certain beverage contains 7.700% ethanol #(C_2H_6O)# by mass. Another method for reducing phenyl-2-nitropropene to phenyl-2-propanone in 80% yield is to use Chromium(II)chloride as the For information on the availability of this material at NARA, call 202-741-6030 or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html. What is the mole ratio of #CO(g)# to #CO_2(g)# in this reaction? Use 20 milliliters for test. 172.623 Carrageenan with polysorbate 80. delta-Dodecalactone; 5-hydroxydodecanoic acid, deltalactone. Petrolatum may be safely used in food, subject to the provisions of this section. 75. Synthetic fatty alcohols may be safely used in food and in the synthesis of food components in accordance with the following prescribed conditions: (a) The food additive consists of any one of the following fatty alcohols: (1) Hexyl, octyl, decyl, lauryl, myristyl, cetyl, and stearyl; manufactured by fractional distillation of alcohols obtained by a sequence of oxidation and hydrolysis of organo-aluminums generated by the controlled reaction of low molecular weight trialkylaluminum with purified ethylene (minimum 99 percent by volume C2H4), and utilizing the hydrocarbon solvent as defined in paragraph (b) of this section, such that: (i) Hexyl, octyl, decyl, lauryl, and myristyl alcohols contain not less than 99 percent of total alcohols and not less than 96 percent of straight chain alcohols. (d) Deduce the identity of the alkali metal, showing your workings. (12) As an emulsifier, alone or in combination with sorbitan monostearate, in the minimum quantity required to accomplish the intended effect, in formulations of white mineral oil conforming with 172.878 and/or petroleum wax conforming with 172.886 for use as protective coatings on raw fruits and vegetables. molar ratio of the cadmium reagent to acid chloride, if the ratio was less a considerable amount of acid was found in the product. The food additive terpene resin may be safely used in accordance with the following prescribed conditions: (a) The food additive is the betapinene polymer obtained by polymerizing terpene hydrocarbons derived from wood. An example of a group of isobars is chlorine-40, argon-40, sulfur-40, calcium-40, and potassium-40. Current good manufacturing practice is consistent with direct spray application of the additive at a rate of approximately 1 mL of the additive per 500 cm Synthesized by Fischer-Tropsch process from carbon monoxide and hydrogen which are catalytically converted to a mixture of paraffin hydrocarbon. 7, 2013; 78 FR 71464, Nov. 29, 2013]. She has on hand 60 ml of a 3% solution and wishes to add some 6% solution to obtain the desired 4% solution. What is the mole ratio of #Cl_2# to #C Cl_4#? A pharmacist has one solution that is 40% iodine and 60% water, and another solution that is 3% iodine. Not to exceed 0.3 percent in the molding starch. What is the total of all the coefficients in the balanced equation for the reduction of 1 mol of MnO4? 22. 12. Shaking time for each wash is 1 minute. Zingerone; 4-(4-hydroxy-3-methoxyphenyl)-2-butanone. [alpha]-Methylbenzyl alcohol; styralyl alcohol. The solution is extracted with ether, dried over MgSO4 and the solvent distilled off, and (b) What is the molarity of a solution prepared by dissolving 15.0 g of sodium hydroxide in enough water to make a total of 225 mL of solution? mixture. A chemist performs the reaction #6ClO_2 + 3H_2O -> 5HClO_3 + HCl#. Q:Ammonia is produced industrially by reacting (f) Vitamin D2 mushroom powder may be used as a source of vitamin D2 in food as follows: The food additive whole fish protein concentrate may be safely used as a food supplement in accordance with the following prescribed conditions: (a) The additive is derived from whole, wholesome hake and hakelike fish, herring of the genera Clupea, menhaden, and anchovy of the species Engraulis mordax, handled expeditiously and under sanitary conditions in accordance with good manufacturing practices recognized as proper for fish that are used in other forms for human food. (4) The additive shall be prepared by extraction with hexane and food-grade ethanol to remove fat and moisture. The additive is chiefly paraffinic, isoparaffinic, or naphthenic in nature. of Brand B fruit drink which contains 48% fruit juice. Cakes, brownies, pastries, biscuits, muffins, and cookies, Grain-based bars (e.g., breakfast bars, granola bars, rice cereal bars), Soups and soup mixes, 170.3(n)(40) of this chapter, except for soups and soup mixes containing meat or poultry that are subject to regulation by the U.S. Department of Agriculture under the Federal Meat Inspection Act or the Poultry Products Inspection Act, Food categories listed in 184.1330 of this chapter, except for meat, poultry, and foods for which standards of identity established under section 401 of the Federal Food, Drug, and Cosmetic Act preclude the use of acacia, Levels prescribed in 184.1330 of this chapter. The Director of the Office of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. 2. How much of the 90% disinfectant must he use? Add 10 milliliters of purified isooctane to the flask and reevaporate the solution to a 1-milliliter volume in the same manner as described above, except do not heat for an added 10 minutes. (b) The additive is used or intended for use at the level not to exceed 3 percent by weight in an aqueous emulsion in dehydrating grapes to produce raisins, whereby the residue of the additive on the raisins does not exceed 200 parts per million. a.0.0021 b.0.0022 c.0.0020 d.0.0023 e.0.0019 (7) As a stabilizer in jams and jellies at a level not to exceed 0.4 percent by weight of the finished product. (2) An aqueous solution containing 1 percent of the additive and 1 percent of potassium chloride stirred for 2 hours has a minimum viscosity of 600 centipoises at 75 deg.F, as determined by Brookfield Viscometer, Model LVF (or equivalent), using a No. Some of them, such as nitrate and nitrite, and sulfate and sulfite, have very similar formulas and names, so care must be taken to get the formulas and names correct. method Cd 1-25, "Iodine Value of Fats and Oils Wijs Method," revised 1993, which is incorporated by reference in accordance with 5 U.S.C. How do you write conversion factors that correspond to the following concentration: 0.15% (v/v) acetic acid? [alpha]-Ethylbenzyl butyrate; [alpha]-phenylpropyl butyrate. 457-458, which is incorporated by reference. How many moles of oxygen would have be consumed to produce 68.1 g of water in the reaction #C_3H_8 + 5O_2 -> 3CO_2 + 4H_2O#? No. (d) In the standardized foods listed in paragraphs (b)(1) and (2) of this section the additives are used only in compliance with the applicable standards of identity for such foods. b) Clo Water is added, and the solution is steam-distilled (during corresponds 250-275g of dry sodium salt, or 69-76% of the calculated mount. Oxyethylene content 46 percent-50 percent. of anhydrous benzene and the distillation was continued until about 50 ml. One molecule of potassium sulfate is K2SO4 has 7 atoms in it. Not to exceed 0.6% of the capsule or tablet. When the equation below is balanced for 1 mol of C3H4, what is the coefficient for O2? How much of each solution should the chemist mix to get 200 L of a 42% insecticide? Instructions for Downloading Viewers and Players. (c) Determine the amount (in mol) of excess reactant that remains. 2 H2 + O2 ---> 2 H2O. fractionately distilled to recover unreacted benzene, and to give phenyl-2-propanone in 40% yield (1.34g) based on the reacted manganese(III)acetate, which Correct the absorbance values for any absorbance derived from reagents as determined by carrying out the procedure without a wax sample. (c) To insure safe use of the additive, the container of the additive, in addition to being labeled as required by the general provisions of the act, shall be accompanied by labeling which contains adequate directions for use to provide a final product that complies with the limitations prescribed in paragraph (b) of this section. There are two types of percent concentration: percent by mass and percent by volume. It contains one sulfur atom. 3-Phenylpropionaldehyde; hydrocinnamaldehyde. or K. argentea Mart, Rheum officinale Baill., R. palmatum L., or other spp. Alternately, isotopes can be defined as variants of elements that differ in their nucleon numbers due to a difference in the total number ofneutronsin their respective nuclei. The oxidized polyethylene has a minimum number average molecular weight of 1,200, as determined by high temperature vapor pressure osmometry; contains a maximum of 5 percent by weight of total oxygen; and has an acid value of 9 to 19. Pittier and Poulsenia spp. In the reaction #2CO(g) + O_2(g) -> 2CO_2(g)#, what is the ratio of moles of oxygen used to moles of #CO_2# produced? The mechanism of a chemical reaction can be determined with the help of isotopic substitution. (3) As a fixative in flavoring compounds. What is the mass/volume % of the solute? Glycerol ester of wood rosin, gum rosin, or tall oil rosin may be safely used in food in accordance with the following prescribed conditions: (a) It has an acid number of 3 to 9, a drop-softening point of 88 to 96 deg.C; and a color of N or paler as determined in accordance with Official Naval Stores Standards of the United States. extracted with toluene (2x500 ml). 90 min). (d) The additive meets the following specifications: (1) Positive for gellan gum when subjected to the following identification tests: (i) A 1-percent solution is made by hydrating 1 gram of gellan gum in 99 milliliters of distilled water. What is the experimental molar ratio of #"Al"# to #"I"_2# if 1.20 g #"Al"# reacts with 2.40 g #"I"_2#? (4) As an emulsifier in solid-state, edible vegetable fat-water emulsions intended for use as substitutes for milk or cream in beverage coffee, with or without one or a combination of the following: When used alone, the maximum amount of polysorbate 65 shall not exceed 0.32 percent of the weight of the cake icing or cake filling. What mass in grams of #"HCl"# reacts completely with #"3.208 g Pb"# in the following reaction? After distillation Protein quality shall not be less than 100, as determined by the method described in sections 43.212-43.216 of the AOAC. To calculate the molar ratios, you put the moles of one reactant over the moles of the other reactant. Butyl butyryllactate; lactic acid, butyl ester, butyrate. The benzene layer was separated and the aqueous layer extracted with four 25 ml portions of benzene. reaction mixture. The Director of the Office of the Federal Register approves this incorporation by reference in accordance with 5 U.S.C. Reaction of Benzyl Chloride with Acetyl Chloride in the Presence of Metallic Nickel. When the ice has melted, the organics are extracted from the Dry for 24 hours at 160 deg.C +/-1 deg.C. 1-Phenyl-1-propanol; phenylethyl carbinol. The food additive polysorbate 60 (polyoxyethylene (20) sorbitan monostearate) which is a mixture of polyoxyethylene ethers of mixed partial stearic and palmitic acid esters of sorbitol anhydrides and related compounds, may be safely used in food in accordance with the following prescribed conditions: (a) The food additive is manufactured by reacting stearic acid (usually containing associated fatty acids, chiefly palmitic) with sorbitol to yield a product with a maximum acid number of 10 and a maximum water content of 0.2 percent, which is then reacted with ethylene oxide. Using a Buchner funnel and a filter paper (Schleicher & Schuell No. (c) To assure the safe use of the additive: (1) The label and labeling of the additive container shall bear, in addition to the other information required by the act, the name of the additive.

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