Mole and molar mass

Front

What is Avogadro's number?

Back

6.02 x 10^23 particles per one mole of a substance.

Front

How many moles are in 6.02 x 10^23 molecules of H2O?

Back

1 mole.

Front

What is the formula to convert grams to moles?

Back

Moles = grams / molar mass.

Front

What is the molar mass of water (H2O)?

Back

18 g/mol.

Front

How many atoms are in 1 mole of any element?

Back

6.02 x 10^23 atoms.

Front

What is the molar mass of Cl2?

Back

70 g/mol.

Front

How do you calculate the number of moles from grams?

Back

Divide the mass of the substance by its molar mass.

Front

What is the significance of Avogadro's number in chemistry?

Back

It allows chemists to count particles by weighing them.

Front

If you have 90.75 grams of NiS, how many moles do you have?

Back

0.63 moles.

Front

What is the relationship between moles and molecules?

Back

1 mole contains 6.02 x 10^23 molecules.