Moles v2

Front

What is a mole?

Back

A mole is 6.022 x 10^23 particles of any substance.

Front

How many molecules are in one mole of a substance?

Back

There are 6.022 x 10^23 molecules in one mole of a substance.

Front

What is the molar mass of carbon (C)?

Back

The molar mass of carbon is approximately 12.01 g/mol.

Front

How do you calculate the number of moles from grams?

Back

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

Front

How many moles are in 5.0 grams of carbon?

Back

0.42 mol.

Front

What is the volume of one mole of gas at STP?

Back

The volume of one mole of gas at STP is 22.4 liters.

Front

How many molecules are in 15.0 mL of carbon dioxide at STP?

Back

4.03 x 10^20 molecules.

Front

What is the relationship between moles and molecules?

Back

1 mole = 6.022 x 10^23 molecules.

Front

How many molecules are in 5.0 micrograms (μg) of hydrogen gas?

Back

1.5 x 10^18 molecules.

Front

How are a mole of aluminum and a mole of zinc the same?

Back

They have the same number of atoms - 6.02 x 10^23.