Mole, Molar Mass, & Avogadro's #

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

Avogadro’s number is:

• 6.02 x 10²²

• 6

• 6.02 x 10²³

• 3.01 x 10²³

What is the molar mass of Br?

• 79.9 g / mol

• 79.9 mol / g

• 35 g / mol

• 35 mol / g

What is the molar mass of Carbon?

• 6 g / mol

• 6 mol / g

• 12.0 g / mol

• 12.0 mol / g

What is the molar mass of N₂O₄?

• 6 g / mol

• 30 g / mol

• 92 g / mol

• 100 g / mol

To convert moles to mass one would

• multiply moles given by the molar mass in grams

• divide the moles given by the molar mass in grams

• simply use the molar mass for the given substance

• multiply the average atomic mass by the molar mass

What is the mass of one mole of aluminum (Al)?

• 27 g

• 13 g

• 54 g

• 14 g

What is the molar mass of table salt (NaCl)?

• 805 g/mol

• 35 g/mol

• 23 g/mol

• 58 g/mol

What is the molar mass of CO₂?

• 22

• 16

• 32

• 44

What is the molar mass of Cl₂?

• 17 g/mol

• 35 g/mol

• 70 g/mol

• 89 g/mol