Multiple Step Mole Conversions

Front

What is the molar volume of an ideal gas at STP?

Back

22.4 L

Front

How do you convert liters of gas to moles at STP?

Back

Use the formula: Moles = Volume (L) / 22.4 L/mole.

Front

What is the formula to calculate moles from mass?

Back

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

Front

How many moles are in 1.00 g of sodium chloride (NaCl)?

Back

0.017 moles (Molar mass of NaCl = 58.44 g/mole).

Front

What is Avogadro's number?

Back

6.02 x 10^23, the number of particles in one mole of a substance.

Front

How do you find the number of atoms in a sample?

Back

Multiply the number of moles by Avogadro's number.

Front

What is the relationship between moles and formula units?

Back

1 mole of a substance contains Avogadro's number of formula units.

Front

How many moles are in 44.8 L of an ideal gas at STP?

Back

2 moles (44.8 L / 22.4 L/mole).

Front

How do you convert grams of a substance to moles?

Back

Use the formula: Moles = Mass (g) / Molar Mass (g/mole).

Front

What is the molar mass of calcium chloride (CaCl2)?

Back

Molar mass = 110.98 g/mole.