Basics of Moles, Calculating Molar Mass

Front

What is Avogadro's number?

Back

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

Front

What is the molar mass of table salt (NaCl)?

Back

58.443 g/mol.

Front

Calculate the molar mass of NH4NO2.

Back

64 g/mol.

Front

What is the molar mass of CO2?

Back

44 g/mol.

Front

How many atoms are in 1 mole of any substance?

Back

6.02 x 10^23 atoms.

Front

What is the definition of molar mass?

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

How do you calculate the molar mass of a compound?

Back

Add the molar masses of all the atoms in the compound's formula.

Front

What is the molar mass of water (H2O)?

Back

18.015 g/mol.

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 2 moles of NaCl, how many grams do you have?

Back

116.886 g (2 moles x 58.443 g/mol).