Moles and Mole Conversions (REG)

Front

What is a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.02 x 10^23 particles (atoms, molecules, ions, etc.) of a substance.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of 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 grams per mole).

Front

What is the molar mass of lithium (Li)?

Back

The molar mass of lithium (Li) is approximately 6.94 g/mol.

Front

How many atoms are in 1 mole of any substance?

Back

1 mole of any substance contains Avogadro's number of atoms, which is 6.02 x 10^23.

Front

What is the relationship between moles and molecules?

Back

1 mole of a substance contains 6.02 x 10^23 molecules of that substance.

Front

How do you convert moles to atoms?

Back

To convert moles to atoms, multiply the number of moles by Avogadro's number (6.02 x 10^23).

Front

What is the mass of one mole of an element?

Back

The mass of one mole of an element is equal to its atomic mass from the periodic table, expressed in grams.

Front

If you have 2 moles of magnesium (Mg), how many atoms do you have?

Back

2 moles of magnesium contain 2 x 6.02 x 10^23 = 1.204 x 10^24 atoms.

Front

What is dimensional analysis?

Back

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