Empirical Formula Challenges

What is the empirical formula of C6H12O6?

• C2H4O2

• C6H12O6

• C3H6O3

• CH2O

Calculate the empirical formula for a compound with 40% carbon, 6.7% hydrogen, and 53.3% oxygen by mass.

• C3H6O

• C2H4O2

• CH2O

• C4H8O2

If a compound contains 2 moles of nitrogen and 6 moles of hydrogen, what is its empirical formula?

• NH3

• N3H6

• NH2

• N2H6

Determine the empirical formula of a substance that is 75% carbon and 25% hydrogen by mass.

• CH4

• C2H2

• CH2

• C3H6

A compound is composed of 60% sulfur and 40% oxygen. What is its empirical formula?

• O2S

• SO4

• S2O

• SO2

What is the empirical formula for a compound with the molecular formula C8H16?

• C2H4

• CH2

• C8H8

• C4H8

If a sample contains 10g of sodium and 15g of chlorine, what is the empirical formula?

• Na2Cl2

• NaCl

• NaCl2

• NaCl3

Calculate the empirical formula for a compound with 5.3g of magnesium and 4.7g of oxygen.

• Mg4O5

• Mg2O3

• Mg3O4

• MgO

A compound has a molar mass of 78 g/mol and an empirical formula of CH. What is its molecular formula?

• C8H8

• C2H2

• C4H4

• C6H6

If a compound has an empirical formula of C2H5 and a molar mass of 58 g/mol, what is its molecular formula?

• C4H10

• C5H12

• C3H8

• C2H5