Calculating Molar Mass

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by summing the atomic masses of all atoms in a molecule.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar 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 carbon (C)?

Back

The atomic mass of carbon is approximately 12.01 g/mol.

Front

What is the atomic mass of hydrogen (H)?

Back

The atomic mass of hydrogen is approximately 1.01 g/mol.

Front

What is the atomic mass of oxygen (O)?

Back

The atomic mass of oxygen is approximately 16.00 g/mol.

Front

What is the atomic mass of phosphorus (P)?

Back

The atomic mass of phosphorus is approximately 30.97 g/mol.

Front

How many atoms of carbon are in C3H8?

Back

3

Front

How many atoms of hydrogen are in C3H8?

Back

8

Front

How many atoms of phosphorus are in Ca3(PO4)2?

Back

2

Front

What is the molar mass of CH3OH? (Two decimal places, not units)

Back

32.05