Stoichiometry Multiple Choice Quiz

What is Avogadro’s number?

• 6.02 × 10²⁰

• 6.02 × 10²³

• 3.14 × 10²³

• 1.00 × 10²²

How many molecules are in 2 moles of CO₂?

• 6.02 × 10²³

• 1.20 × 10²⁴

• 3.01 × 10²³

• 2.00 × 10²²

What is the SI unit for measuring the amount of substance in stoichiometry?

• Gram

• Mole

• Liter

• Kelvin

How many atoms are in 3 moles of oxygen gas (O₂)?

• 3.01 × 10²³

• 6.02 × 10²³

• 1.81 × 10²⁴

• 3.62 × 10²⁴

What is the volume of 1 mole of gas at STP?

• 22.4 L

• 11.2 L

• 44.8 L

• 2.24 L

If you have 3.00 × 10²³ molecules of CO₂, how many moles do you have?

• 0.50 moles

• 1 mole

• 2 moles

One mole of any element contains how many atoms?

• 1.00 x 10^20

• 6.64 moles

• 8.00 moles

• 2.00 moles

• 0.50 moles

What is the volume of 3 moles of gas at STP?

• 11.2 L

• 22.4 L

• 67.2 L

• 44.8 L

If you have 0.25 moles of H2, how many molecules do you have?

• 1.51 x 10^23

• 3.01 x 10^23

• 1.00 x 10^22