Molar Conversions Review

Front

To convert from particles to moles, you should multiply by:

Back

1 mole = 6.02 x 10^23 particles (Avogadro's number). Therefore, to convert particles to moles, divide the number of particles by 6.02 x 10^23.

Front

To convert from moles to particles, you should multiply by:

Back

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

Front

0.50 moles of carbon (C) is equal to how many grams?

Back

6.0 grams (0.50 moles x 12.0 g/mol = 6.0 g).

Front

What is the mass of 6.25 mol of Cu(NO3)2?

Back

1172 g (6.25 mol x 187.0 g/mol = 1172 g).

Front

If I have 6.02 x 10^23 molecules of CO2, what is the mass?

Back

44.0 g (1 mole of CO2 = 44.0 g, so 6.02 x 10^23 molecules = 1 mole).

Front

Define Avogadro's number.

Back

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

Front

What is the molar mass of carbon (C)?

Back

The molar mass of carbon (C) is 12.0 g/mol.

Front

How do you calculate the mass of a substance from moles?

Back

Mass (g) = Moles x Molar Mass (g/mol).

Front

What is the molar mass of Cu(NO3)2?

Back

The molar mass of Cu(NO3)2 is 187.0 g/mol.

Front

How many moles are in 12 grams of carbon?

Back

1 mole (12 g / 12 g/mol = 1 mole).