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A 0.7121 g sample of a wheat flour was analyzed by the Kjeldahl method.The ammonia formed by addition of concentrated base after digestion with H2SO4, was distilled into 25.00 mL of 0.04977 M HCL excess Ha was then back- titrated with 3.97 mL of 0.04012 M NaoH. Calculate the percent protein in the flour.
Calculate the amount of N2 gas released (in liters at 37°C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
The density of 70.4 wt% aqueous nitric acid, HNO3, is 1.41 g/ml. 1. How many grams of solution are in 1.500 L?
What is the difference between isomers and epimers? What is an example of each? During digestion, disaccharides like sucrose are hydrolyzed
Phosphoric acid can be prepared by reaction of sulfuric acid with "phosphate rock" according to the equation: Ca3(PO4)2+3H2SO4 ---> 3CaSO4 + 2H3PO4 What is the molar mass of Ca3(PO4)2?
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 ? NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5.
What is the limiting reagent in the reduction of C10H16O with NaBH4 assuming you initiate it with.1 g of sodium borohydride and .1 g of camphor?
this experiment separates meat into an acetone-soluble part and an acetone-insoluble part. the calculations are based
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over the course of one year
The pressure is changed to 8.75 atm and the gas is cooled to 15 C. Calculate the new volume of the gas using the ideal gas equation.
Consider the following equibrium: CO(g) + 3H2(g) = CH4(g) + H2(g) Initially, 0.200 mol CO and 0.600 mol H2 are placed in a 2.00 L container.
How is pmma material made into an acrylic heel? describe process from start to finish using pmma material.
State an overall balanced equation for the reaction that takes place when aqueous nickel (ll) chloride reacts with zinc to make zinc chloride and nickel.
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