Front

What is the molar mass of carbon dioxide (CO₂)?

Back

The molar mass of carbon dioxide is 44.01 g/mol.

Front

How do you calculate the number of molecules in a given number of moles?

Back

To calculate the number of molecules, multiply the number of moles by Avogadro's number (6.022 x 10²³ molecules/mol).

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10²³, which is the number of atoms, molecules, or particles in one mole of a substance.

Front

How many molecules are in 2.50 moles of NaCl?

Back

There are 1.51 x 10²⁴ molecules in 2.50 moles of NaCl.

Front

How do you convert grams to moles?

Back

To convert grams to moles, divide the mass of the substance (in grams) by its molar mass (in g/mol).

Front

How many atoms of carbon are in 6.00g of carbon?

Back

There are 3.01 x 10²³ atoms of carbon in 6.00g of carbon.

Front

How do you calculate the mass of a substance from the number of molecules?

Back

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

Front

How many grams are in 1.2 x 10²⁴ molecules of CO?

Back

There are 56 grams in 1.2 x 10²⁴ molecules of CO.

Front

How do you find the number of moles from the number of atoms?

Back

To find the number of moles from the number of atoms, divide the number of atoms by Avogadro's number.

Front

How many moles are in 3.01 x 10²² atoms of magnesium?

Back

There are 0.0500 moles in 3.01 x 10²² atoms of magnesium.