Formula Mass Practice

Front

What is formula mass?

Back

The formula mass is the sum of the atomic masses of all atoms in a chemical formula, expressed in grams per mole (g/mol).

Front

How do you calculate the formula mass of a compound?

Back

To calculate the formula mass, identify the number of each type of atom in the compound, multiply by the atomic mass of each element, and sum the total.

Front

What is the atomic mass of Hydrogen (H)?

Back

The atomic mass of Hydrogen (H) is approximately 1.01 g/mol.

Front

What is the atomic mass of Oxygen (O)?

Back

The atomic mass of Oxygen (O) is approximately 16.00 g/mol.

Front

What is the atomic mass of Gold (Au)?

Back

The atomic mass of Gold (Au) is approximately 197.0 g/mol.

Front

What is the atomic mass of Chlorine (Cl)?

Back

The atomic mass of Chlorine (Cl) is approximately 35.45 g/mol.

Front

Calculate the formula mass of H2O.

Back

The formula mass of H2O is 18.02 g/mol (2*1.01 + 16.00).

Front

Calculate the formula mass of H2O2.

Back

The formula mass of H2O2 is 34.02 g/mol (2*1.01 + 2*16.00).

Front

What is the formula mass of Ba(C2H3O2)2?

Back

The formula mass of Ba(C2H3O2)2 is 255.3 g/mol.

Front

What is the formula mass of AuCl3?

Back

The formula mass of AuCl3 is 303.3 g/mol (197.0 + 3*35.45).