Mole Refresher

In chemistry, a "mole" is:

• The mass of an atom
• a large number used to count particles
• based on the volume of a substance

What is Avogadro's number?

• 6.02 x 10²³

• 1 mole

• 600 million

• 6.02

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

How do we get mass from moles?

• multiply by avogadro's number
• multiply by molar mass
• divide by avogadro's number
• divide by molar mass

The number 6.02 x 10²³ is called...

• Obama's number
• Bohr's number
• Trump's number
• Avogadro's number

What is the mass of 0.89 mol of CaCl₂?

• 111 grams
• 0.008 grams
• 98.9 grams
• none of the choices

How many moles are in 16.94g of water?

• 16.94 mol H₂O
• 0.9401 mol H₂O
• 305.3 mol H₂O
• 1.063 mol H₂O

How many grams are in 2.4 moles of Sulfur?

• 76.8

• 0.075

• 13.3

• 32

How many moles are in 22 grams of Argon?

• 0.55

• 2

• 40

• 880

What is the mass of one mole of aluminum?

• 26.982 g
• 13 g
• 53.985 g
• 14 g