% Comp, Empirical and Molecular Formulas

Front

We divide a compound's components by the smallest number of moles to determine the ____________________ .

Back

mole ratio

Front

Molecular formulas are determined _______________.

Back

experimentally

Front

What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696 g/mol?

Back

K8S4O16

Front

What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18 g/mol?

Back

C6H12O6

Front

What is the percent composition of Benzene, C6H6?

Back

C = 92.2% H = 7.8%

Front

Define empirical formula.

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

Define molecular formula.

Back

The actual number of atoms of each element in a molecule of a compound.

Front

How do you calculate percent composition?

Back

(mass of element in 1 mole of compound / molar mass of compound) x 100%.

Front

What is the empirical formula of a compound with a molecular formula of C6H12O6?

Back

CH2O

Front

If a compound has a molar mass of 180 g/mol and an empirical formula of CH2O, what is the molecular formula?

Back

C6H12O6