Moles and Mole Conversions (REG)

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance, defined as containing exactly 6.02 x 10^23 particles (atoms, molecules, etc.).

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.

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

What is the molar mass of an element?

Back

The molar mass of an element is the mass of one mole of that element, expressed in grams per mole (g/mol).

Front

How do you find the molar mass of a compound?

Back

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

Front

What is the relationship between moles and atoms?

Back

One mole of any substance contains Avogadro's number (6.02 x 10^23) of atoms or molecules.

Front

If you have 2 moles of Li, how many atoms do you have?

Back

You have 2 x 6.02 x 10^23 = 1.204 x 10^24 atoms of Li.

Front

What is the mass of one mole of carbon (C)?

Back

The mass of one mole of carbon is approximately 12.01 grams.

Front

What is dimensional analysis?

Back

Dimensional analysis is a mathematical technique used to convert between units by multiplying by conversion factors.

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).