Moles, Number of Particles, Mass and Volume

What is Avogadro Constant?

• Approximately 6.022 x 10²³

• Approximately 5.022 x 10²³

• Around 7.022 x 10²³

• Exactly 6.022 x 10²²

How many atoms are in one mole of copper?

• 6.022 x 10²² atoms

• 6.022 x 10²⁴ atoms

• 6.022 x 10²⁵ atoms

• 6.022 x 10²³ atoms

Calculate the volume of 1 mole of gas at STP (standard temperature and pressure).

• 20.4 dm³

• 25.4 dm³

• 22.4 dm³

• 24.4 dm³

If the volume of 1 mole of gas is 22.4 dm³ at STP, what is the molar volume?

• 22.4 dm³/mol

• 24.4 dm³/mol

• 20.4 dm³/mol

• 25.4 dm³/mol

What is molar volume?

• The volume of one mole of a substance

• The volume of one atom of a substance

• The volume of one molecule of a substance

• The volume of one gram of a substance

If you know the molar mass of a substance, what additional information do you need to calculate the number of moles in a given mass of that substance?

• The volume of the substance

• The density of the substance

• The actual mass of the substance

• The color of the substanc