Molar Mass and Gram/Moles Conversions

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 convert grams to moles?

Back

Divide the mass of the substance in grams by its 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 36.0 g of Beryllium (Be)?

Back

4.0 mol (since 1 mole Be = 9g Be).

Front

What is the molar mass of Aluminum sulfate, Al2(SO4)3?

Back

342 g.

Front

What is the molar mass of Gold(III) chloride, AuCl3?

Back

303.3 g.

Front

How many atoms are in one mole of sulfur?

Back

6.02 x 10^23 atoms.

Front

What is the formula to calculate moles from mass?

Back

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

Front

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

Back

It allows chemists to count particles by weighing them.

Front

How do you find the molar mass of a compound?

Back

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