Molar Mass

Front

What is molar mass?

Back

The 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 molar mass of water (H₂O)?

Back

The molar mass of water is 18.02 g/mol.

Front

How many moles are in 32 grams of oxygen (O₂)?

Back

There are 1 mole of O₂ in 32 grams, since the molar mass of O₂ is 32 g/mol.

Front

What is the molar mass of sodium chloride (NaCl)?

Back

The molar mass of sodium chloride is 58.44 g/mol.

Front

How many atoms of hydrogen are in C₆H₁₂O₆?

Back

There are 12 atoms of hydrogen in C₆H₁₂O₆.

Front

What is the molar mass of sulfuric acid (H₂SO₄)?

Back

The molar mass of sulfuric acid is 98.08 g/mol.

Front

How many oxygen atoms are in 2 moles of Mg(OH)₂?

Back

There are 4 oxygen atoms in 2 moles of Mg(OH)₂.

Front

What is the molar mass of calcium carbonate (CaCO₃)?

Back

The molar mass of calcium carbonate is 100.09 g/mol.

Front

How many moles are in 74 grams of calcium hydroxide (Ca(OH)₂)?

Back

There is 1 mole of calcium hydroxide in 74 grams, since the molar mass is 74 g/mol.