605 Flashcard Practice (Molar Mass and Conversions)

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). It is calculated by summing the atomic masses of all atoms in a molecule.

Front

How do you calculate the molar mass of a compound?

Back

To calculate the molar mass, multiply the atomic mass of each element by the number of times that element appears in the compound, then sum all the values.

Front

What is the molar mass of Iron (Fe)?

Back

55.85 g/mol.

Front

What is the molar mass of AuCl3?

Back

302 g/mol.

Front

What is the molar mass of Cl2?

Back

71.0 g/mol.

Front

How do you convert moles to grams?

Back

To convert moles to grams, multiply the number of moles by the molar mass of the substance (grams = moles × molar mass).

Front

What is the mass in grams of 5.90 mol of C8H18?

Back

673 g.

Front

When converting grams to moles, what unit is in the denominator of the conversion factor?

Back

Grams.

Front

What is the significance of the mole in chemistry?

Back

The mole is a fundamental unit in chemistry that allows chemists to count particles (atoms, molecules) by weighing them.

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.