Molar Conversions

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 calculate the mass of a substance in grams from moles?

Back

Mass (g) = Moles x Molar Mass (g/mol).

Front

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

Back

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

Front

How many grams are in 1 mole of water (H2O)?

Back

1 mole of water (H2O) has a mass of approximately 18.02 g.

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of particles in one mole of a substance.

Front

How do you convert grams to moles?

Back

Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the mass of 2.50 moles of oxygen gas (O2)?

Back

The mass of 2.50 moles of oxygen gas (O2) is 80.0 g.

Front

How many atoms are in 0.75 mole of copper (Cu)?

Back

0.75 mole of copper (Cu) contains approximately 4.51 x 10^23 atoms.

Front

What is the relationship between moles and molecules?

Back

1 mole of any substance contains Avogadro's number (6.022 x 10^23) of molecules.

Front

How many moles are in 454 grams of iron (Fe)?

Back

The number of moles in 454 grams of iron (Fe) is approximately 8.14 moles.