Lesson Check Molar Mass

Front

What is the definition of 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 molar mass of nitrogen gas (N₂)?

Back

28.02 g/mol.

Front

What is the molar mass of hydrogen peroxide (H₂O₂)?

Back

34.02 g/mol.

Front

What is the molar mass of acetic acid (CH₃COOH)?

Back

60.06 g/mol.

Front

What is the molar mass of glucose (C₆H₁₂O₆)?

Back

180.18 g/mol.

Front

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

Back

98.09 g/mol.

Front

What is the significance of molar mass in chemical reactions?

Back

Molar mass is crucial for stoichiometry, allowing chemists to convert between grams and moles, and to predict the amounts of reactants and products in a reaction.

Front

What is the molar mass of water (H₂O)?

Back

18.02 g/mol.

Front

What is the molar mass of carbon dioxide (CO₂)?

Back

44.01 g/mol.