Mole Review

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

How do you calculate the number of grams in a given number of moles?

Back

To calculate grams from moles, use the formula: grams = moles x molar mass.

Front

What is the molar mass of Neon (Ne)?

Back

The molar mass of Neon is approximately 20.18 g/mol.

Front

How many grams are in 1.2 moles of Neon?

Back

24 grams (1.2 moles x 20.18 g/mol = 24 grams).

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 find the number of molecules in a given number of moles?

Back

To find the number of molecules, multiply the number of moles by Avogadro's Number.

Front

How many molecules are in 9.4 moles of AlCl3?

Back

5.66 x 10^24 molecules (9.4 moles x 6.02 x 10^23 molecules/mole).

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water is approximately 18.02 g/mol.

Front

How many moles are in 16.94g of water?

Back

0.9401 mol H2O (16.94g / 18.02 g/mol).

Front

How do you calculate moles from grams?

Back

To calculate moles from grams, use the formula: moles = grams / molar mass.