Moles and Molar mass

Front

What is the definition of a mole?

Back

A mole is a unit of measurement in chemistry that represents 6.022 x 10^23 particles (atoms, molecules, ions, etc.) of a substance.

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

How do you calculate molar mass?

Back

To calculate molar mass, sum the atomic masses of all atoms in a molecule based on the periodic table.

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water is approximately 18.02 g/mol.

Front

How many grams are in 2 moles of carbon dioxide (CO2)?

Back

To find the mass, multiply the number of moles by the molar mass of CO2 (44.01 g/mol): 2 moles x 44.01 g/mol = 88.02 grams.

Front

What is the relationship between moles and mass?

Back

The relationship is given by the formula: Mass (g) = Moles x Molar Mass (g/mol).

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 sodium bicarbonate (NaHCO3)?

Back

The molar mass of sodium bicarbonate is approximately 84.01 g/mol.

Front

If 1 mole of a substance weighs 58.44 grams, how much do 0.5 moles weigh?

Back

0.5 moles weigh 29.22 grams (58.44 g/mol x 0.5 moles).

Front

How many moles are in 100 grams of glucose (C6H12O6)?

Back

To find the moles, first calculate the molar mass of glucose (180.18 g/mol): Moles = 100 g / 180.18 g/mol ≈ 0.555 moles.