Unit 6 -The Mole Review

Front

What is the definition of a mole in chemistry?

Back

A mole is defined as the amount of substance that contains as many entities (atoms, molecules, etc.) as there are in 12 grams of carbon-12.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass of a compound, sum the molar masses of all the atoms in its chemical formula.

Front

What is the molar mass of sodium (Na)?

Back

The molar mass of sodium (Na) is approximately 23 g/mol.

Front

How many grams are in 1 mole of water (H2O)?

Back

1 mole of water (H2O) has a mass of approximately 18 grams.

Front

What is the formula for calculating the number of moles from mass?

Back

The formula is: Number of moles = Mass (g) / Molar mass (g/mol).

Front

How many atoms are in 1 mole of any substance?

Back

1 mole of any substance contains approximately 6.022 x 10^23 entities (Avogadro's number).

Front

What is the molar mass of calcium carbonate (CaCO3)?

Back

The molar mass of calcium carbonate (CaCO3) is approximately 100 g/mol.

Front

What is the formula for beryllium sulfide?

Back

The formula for beryllium sulfide is BeS.

Front

How do you convert atoms to moles?

Back

Front

What is the significance of Avogadro's number?

Back

Avogadro's number (6.022 x 10^23) is significant because it defines the number of particles in one mole of a substance.