Mixed Stoichiometry Problems 1) A) How many grams of oxygen are needed to burn 5.00 moles of propane?
2) Sodium hydroxide reacts with sulfuric acid to produce water and sodium sulfate. A) How many grams of sodium sulfate will be formed using 200. Grams of sodium hydroxide and an excess of sulfuric acid? B) If a student’s percent yield is 59%, what was the student’s actual yield?
3) Zinc reacts with hydrochloric acid in a single replacement reaction. How many grams of zinc are required if 25.0mL of 4.00M hydrochloric acid solution are used in lab?
4) A hydrate of magnesium sulfate has a mass of 13.52grams. This sample is heated until no water remains. The anhydrate has a mass of 6.60 grams. Find a)the formula and b) the name of the hydrate.
5) In the combustion of ethane if 15.0 grams of ethane react with 45.0 grams of oxygen, how many grams of water can be produced?
6) One method for determining the amount of pyruvic acid, C3H4O3, is to catalyze its decomposition using a yeast enzyme according to the following reaction: C3H4O3(aq) C2H4O(aq) + CO2(g) The carbon dioxide gas is collected and used to determine the amount of pyruvic acid in the original sample. In a typical analysis, 10.7mL of carbon dioxide gas are obtained at a pressure of 0.983 atm and a temperature of 31.00C. How many grams of pyruvic acid were in the original sample?
7) How many grams of carbonic acid can be produced when 55.0 liters of carbon dioxide is pressed into water, at STP?
8) When 732 L of 1.81 M of Ag2SO4 is mixed with 1148 L of 2.07 M of KBr, According to this equation: Ag2SO4 (aq) + 2 KBr (aq) 2 AgBr (s) + K2SO4 A) How many grams of silver bromide can be formed? B) How much of the excess reactant remains?