Empirical Molecular Formula Practice Quiz

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

• CH2O

• C3H6O3

• CHO2

• C2H4O2

A compound is found to contain 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. What is its empirical formula?

• CH2O

• C3H6O3

• C2H4O2

• CH4O2

A compound is found to contain 63.15% carbon, 5.30% hydrogen, and 31.55% oxygen. What is its empirical formula?

• C3H6O3

• C4H8O4

• CH2O

• C2H4O2

A compound is found to contain 29.17% carbon, 4.86% hydrogen, and 65.97% oxygen. What is its empirical formula?

• C3H6O3

• CHO2

• CH2O

• C2H4O2

A compound is found to contain 52.14% carbon, 13.15% hydrogen, and 34.71% oxygen. What is its empirical formula?

• C2H6O

• C3H8O

• C2H4O

• CH2O

A compound is found to contain 40.00% carbon, 6.67% hydrogen, and 53.33% oxygen. What is its molecular formula if its molar mass is 180 g/mol?

• C3H6O3

• C4H8O4

• C2H4O2

• C6H12O6

A compound is found to contain 40.92% carbon, 4.58% hydrogen, and 54.50% oxygen. What is its molecular formula if its molar mass is 342 g/mol?

• C11.8H15.8O11.8

• C10H10O10

• C9H14O9

• C12H16O12

A compound is found to contain 63.15% carbon, 5.30% hydrogen, and 31.55% oxygen. What is its molecular formula if its molar mass is 180 g/mol?

• C3H6O3

• (CH2O)6

• C6H12O6

• C12H24O12

A compound is found to contain 29.17% carbon, 4.86% hydrogen, and 65.97% oxygen. What is its molecular formula if its molar mass is 342 g/mol?

• C7H14O14

• C7H14O7

• C14H28O14

• C7H14O28

A compound is found to contain 52.14% carbon, 13.15% hydrogen, and 34.71% oxygen. What is its molecular formula if its molar mass is 180 g/mol?

• C7H18O3

• C5H10O5

• C6H12O6

• C8H16O4