one-step conversions: moles and mass

Front

What is the definition of a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance, defined as containing exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

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, add the atomic masses of all the elements in the compound, multiplied by the number of times each element appears in the formula.

Front

What is the molar mass of LiBr?

Back

The molar mass of LiBr is approximately 86.75 g/mol.

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl is approximately 58.44 g/mol.

Front

What is the molar mass of aluminum (Al)?

Back

The molar mass of aluminum (Al) is approximately 26.98 g/mol.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

How do you convert moles to grams?

Back

To convert moles to grams, multiply the number of moles by the molar mass of the substance (in g/mol).

Front

What is the formula to find the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the formula to find the mass from moles?

Back

Mass (g) = number of moles x molar mass (g/mol).