Molar Conversions Review

Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express the amount of a substance. It 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

What is Avogadro's number?

Back

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

Front

How do you convert moles to grams?

Back

To convert moles to grams, multiply the number of moles by the molar mass of the substance (in grams per mole).

Front

What is the molar mass of titanium (Ti)?

Back

The molar mass of titanium (Ti) is approximately 47.87 g/mol.

Front

How many grams are in 2 moles of titanium (Ti)?

Back

To find the mass, multiply 2 moles by the molar mass: 2 mol x 47.87 g/mol = 95.74 g.

Front

What is the molar mass of potassium (K)?

Back

The molar mass of potassium (K) is approximately 39.10 g/mol.

Front

How do you calculate the number of atoms in a given mass of an element?

Back

To calculate the number of atoms, first convert the mass to moles using the molar mass, then multiply by Avogadro's number.

Front

What is the mass of 6.02 x 10^23 molecules of CO2?

Back

The mass of 6.02 x 10^23 molecules of CO2 is 44.0 grams.

Front

How do you find the mass of a compound from moles?

Back

To find the mass of a compound from moles, multiply the number of moles by the molar mass of the compound.

Front

What is the molar mass of Cu(NO3)2?

Back

The molar mass of Cu(NO3)2 is approximately 187.56 g/mol.