Make a prediction:

Which reactant do you think is the limiting reactant (going to be used up)?

Acetylene or Oxygen

Do you have 37.6 moles of acetylene given to you in the problem?

• Yes

• No

What is the mole ratio between acetylene gas (C₂H₂) and carbon dioxide (CO₂)?

• 1 mol C₂H₂:4 mol CO₂

• 2 mol C₂H₂:4 mol CO₂

• 5 mol C₂H₂:4 mol CO₂

• 2 mol C₂H₂:2 mol CO₂

What is the answer with the correct number of significant figures?

• 153.3 g

• 153 g

• 150 g

• 200 g

Which substance is the limiting reactant?

• Acetylene

• Oxygen