Molar Mass

Front

What is the definition of molar mass?

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

How is the molar mass of an element determined?

Back

The molar mass of an element is equal to its atomic mass, which is found on the periodic table.

Front

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

Back

44 g/mol.

Front

Calculate the molar mass of aluminum chloride (AlCl₃).

Back

The molar mass of aluminum chloride (AlCl₃) is 133.341 g/mol.

Front

What is the molar mass of sodium (Na)?

Back

The molar mass of sodium is 23 g/mol.

Front

What units are used to express molar mass?

Back

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

Front

Why is molar mass important in chemistry?

Back

Molar mass is crucial for converting between grams and moles, allowing for stoichiometric calculations in chemical reactions.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass of a compound, sum the molar masses of all the atoms in its chemical formula.

Front

What is the molar mass of water (H₂O)?

Back

The molar mass of water is approximately 18 g/mol.

Front

What is the relationship between moles and mass?

Back

The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass.