Mole-Mass Conversions

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

How do you convert grams to moles?

Back

To convert grams to moles, use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of Ag₂CO₃?

Back

The molar mass of Ag₂CO₃ (Silver Carbonate) is approximately 275.75 g/mol.

Front

Calculate the number of moles in 25.0 g of Ag₂CO₃.

Back

Using the formula: Moles = Mass / Molar Mass, Moles = 25.0 g / 275.75 g/mol = 0.0907 mol.

Front

What is the molar mass of MgCO₃?

Back

The molar mass of MgCO₃ (Magnesium Carbonate) is approximately 84.31 g/mol.

Front

Calculate the number of moles in 25.0 g of MgCO₃.

Back

Using the formula: Moles = Mass / Molar Mass, Moles = 25.0 g / 84.31 g/mol = 0.30 mol.

Front

What is the molar mass of NaOH?

Back

The molar mass of NaOH (Sodium Hydroxide) is approximately 40.00 g/mol.

Front

Calculate the number of moles in 85.0 g of NaOH.

Back

Using the formula: Moles = Mass / Molar Mass, Moles = 85.0 g / 40.00 g/mol = 2.1 mol.

Front

What is the molar mass of Ar (Argon)?

Back

The molar mass of Argon (Ar) is approximately 39.95 g/mol.

Front

Calculate the number of moles in 220.0 g of Ar.

Back

Using the formula: Moles = Mass / Molar Mass, Moles = 220.0 g / 39.95 g/mol = 5.5 mol.