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).

Front

How is molar mass calculated for a compound?

Back

Molar mass is calculated by summing the atomic masses of all the atoms in the compound's chemical formula.

Front

What is the molar mass of aluminum (Al)?

Back

26.98 g/mol.

Front

What is the molar mass of sodium (Na)?

Back

22.99 g/mol.

Front

What is the molar mass of fluorine gas (F2)?

Back

38.00 g/mol.

Front

What is the molar mass of table salt (NaCl)?

Back

58.44 g/mol.

Front

What unit is used to express molar mass?

Back

Molar mass is expressed in grams per mole (g/mol).

Front

Why is it important to know the molar mass of a substance?

Back

Knowing the molar mass is essential for converting between grams and moles, which is crucial for stoichiometric calculations in chemistry.

Front

What is the molar mass of water (H2O)?

Back

18.02 g/mol.

Front

How does the molar mass of a gas differ from that of a solid or liquid?

Back

The molar mass of a gas is often calculated under standard conditions and can vary with temperature and pressure, while solids and liquids have fixed molar masses.