Quantitative Chemistry Mastery Quiz

• 12.01 g/mol

• 14.01 g/mol

• 16.04 g/mol

• 18.05 g/mol

• 28.01 g/mol

• 32.01 g/mol

• 44.01 g/mol

• 46.03 g/mol

• 88.02 g

• 132.03 g

• 144.03 g

• 176.04 g

• 0.25 moles

• 0.5 moles

• 1 mole

• 2 moles

• 11.19%

• 88.81%

• 15.999%

• 11.11%

What is the empirical formula of a compound that is 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass?

• 58.44 g

• 146.1 g

• 292.2 g

• 73.05 g

What is the mole ratio of hydrogen to oxygen in water?

• 1:1

• 2:1

• 1:2

• 4:1

• 85.71%

• 75.00%

• 80.00%

• 90.00%

A compound contains 69.6% zinc, 10.8% sulfur, and 19.6% oxygen by mass. What is the empirical formula of this compound?