Test Review: Moles

The mass of one mole of substance is called...

• molecular mass
• mole constant
• molar mass
• atomic weight

What is the mass of one mole of aluminum?

• 27 g
• 13 g
• 54 g
• 14 g

What is the molar mass of CO₂?

• 12
• 16
• 32
• 44

How many particles are in a mole?

• 602
• 602 million
• 602 moles
• 6.02 x 10²³

When you are solving for molecules, atoms, and particles you always use what number?

• 6.02 X 10²³

• Lucky 7

• Guess

• 24

If you have grams on top, what do you need on the bottom of the conversion factor to be?

• atoms

• particles

• grams

• moles

How many moles are in 2.85 x 10¹⁸ atoms of iron, Fe?

• 41.4 molecules

• 4.14 x 10²³ molecules

• 4.14 x 10²⁵ molecules

• 1.83 x 10^-21 molecules

How many moles are in 3.01 x 10²² atoms of magnesium, Mg?

• 0.05 moles

• 1.81 X 10⁴⁶ moles

• 5.00 x 10²¹ moles

• 5 moles

How many atoms are in 6.5 moles of zinc, Zn?

• 4.2 atoms

• 3.91 X 10^-24 atoms

• 3.91 x 10²⁴ atoms

• 5 x 10²⁴ atoms

Which of the following statements regarding the mole is NOT correct?

• A mole is a counting unit

• Equal to 6.02 x 10²³ particles.

• The concept of mole is similar to the concept of dozen

• none of the above