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A complete combustion of 0.001 mol of aspartame which consists C, H,O,N gives 162 mg of water
%C=57.1 %H=6.1 %N=9.5 %O=27.3 Calculat the number of mol atoms of H present in 1 molecule of aspartame . deduce the number of H atoms present in 1 molecule of aspartame.
assume that the activation energy for a certain reaction is 173 kjmol and the reaction is started with equal initial
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
when performing a friedel-crafts alkylation reaction not only does one have the problems of multiple alkylation and
Question- 1) Write a chemical equation for the reaction of this acid with water Identify the Bronsted acids and bases in the reaction. 2) Determine the Ka of this acid
Question- For each of the following compounds, write a balanced net ionic equation and a Ksp expression for AgCO3, PbCrO4,and Hg2Cl2 Provide the complete equation
wo aliquots of serum are added to 5.00 mL portions of water. To one portion is added 20.0 microL of 0.0750 M KCl solution. The net emission signals in arbitrary units are 23.2 and 68.6, What is the magnitude of the emission signal produced by the s..
After completing the calculations below, sketch the pH curve for the titration of 20.0 mL of 0.200 M solution of a weak base, B (Kb = 1.9 x 10^-5), with 0.200 M HBr. Indicate the pH at (a) the beginning of the titration
It is desired to determine the micrograms of thiamine, vitamin B per gram of pork. A 2.00 g sample of pork was extracted with HCl, treated with phosphatase, and diluted to 100 mL. An aliquot of 15 mL is purified by absorption and elution during wh..
which of the following statements is true of the titration of a weak acid by a strong base such as sodium hydroxide. At the equivalence point, the pH is less than 7. the moles of acid are greater than the moles of base at the equivalence point
25.0 mL of 1.50M LiOH are neutralized by 15.0mL of nitric acid. what is the molarity of HNO3?
Use the Henderson-Hasselbalch equation to calculate the pH of each solution: Part A - a solution that is 0.20 M in HCHO2 and 0.13 M in NaCHO2 Part B - a solution that is 0.11 M in NH3 and 0.17 M in NH4Cl
The reaction of calcium hydride with water can be used to prepare small quantities of hydrogen gas, as is done to fill weather observation balloons.
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