1. What mass of CO2 (am = 44.01 g/mol) is produced from burning 6.00 g C2H6 (mm = 30.1 g/mol) in excess oxygen?
2. What is the molarity of a HCl solution if a 10.0 mL sample is neutralized by 44.3 mL of a 0.111 molar solution of Ba(OH)2?
3. What is the mass of hydrogen (am = 1.008 g/mol) in a sample if combustion of the sample in excess oxygen yields 0.0692 g of H2O (mm = 18.02 g/mol)?
4. In a reaction of 4.3 g of H2 (am = 2.016 g/mol) and 6.11 g of O2 (am = 32.00 g/mol), 2.4 g of water (mm = 18.02 g/mol) was isolated. What is the percentage yield of the water?
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