Front

What is a mole in chemistry?

Back

A mole is a unit of measurement used to express amounts of a chemical substance, defined as exactly 6.022 x 10^23 particles (atoms, molecules, ions, etc.).

Front

How do you convert moles to grams?

Back

To convert moles to grams, use the formula: grams = moles x molar mass (g/mol).

Front

What is the molar mass of O2?

Back

The molar mass of O2 (oxygen gas) is approximately 32 g/mol.

Front

How many atoms are in 1 mole of any substance?

Back

1 mole of any substance contains 6.022 x 10^23 atoms or molecules.

Front

What is the relationship between moles and particles?

Back

The number of particles in a mole is given by Avogadro's number, which is 6.022 x 10^23.

Front

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

Back

To find the number of moles from particles, use the formula: moles = particles / 6.022 x 10^23.

Front

What is the molar mass of NaCl?

Back

The molar mass of NaCl (sodium chloride) is approximately 58.44 g/mol.

Front

How do you convert grams to moles?

Back

To convert grams to moles, use the formula: moles = grams / molar mass (g/mol).

Front

What is the molar mass of H2SO4?

Back

The molar mass of H2SO4 (sulfuric acid) is approximately 98.08 g/mol.

Front

How many moles are in 5.68 x 10^24 formula units of AlCl3?

Back

To find moles, use the formula: moles = 5.68 x 10^24 / 6.022 x 10^23 = 9.44 moles.