Mole Conversion Review

Front

What is Avogadro's number?

Back

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

Front

How do you convert moles to molecules?

Back

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

Front

What is the molar mass of glucose (C6H12O6)?

Back

The molar mass of glucose is approximately 180.18 g/mol.

Front

How many moles are in 12 grams of carbon (C)?

Back

To find moles, divide the mass by the molar mass. Molar mass of C is 12.01 g/mol, so 12 g C = 1 mole.

Front

What is the relationship between moles and mass?

Back

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

Front

How do you find the number of moles from a given mass?

Back

Number of moles = Mass (g) / Molar Mass (g/mol).

Front

What is the balanced equation for the reaction of magnesium with hydrochloric acid?

Back

Mg + 2 HCl → MgCl2 + H2.

Front

How many moles of HCl are needed to react with 7.5 moles of MgCl2?

Back

15 moles of HCl are needed (2 moles of HCl per mole of MgCl2).

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass in grams by the molar mass in g/mol.

Front

What is the molar mass of O2?

Back

The molar mass of O2 is approximately 32.00 g/mol.