Mass to Mass

4 Al + 3 O₂ –> 2 Al₂O₃  How much aluminum would be needed to completely react with 45 grams of O₂?

• 1.05 moles
• 3.75 moles
• 1.875 grams
• 1.875 moles

The limiting reactant

• slows the reaction down
• is used up first
• is the reactant that is left over
• controls the speed of the reaction

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich.  If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

• bread
• jelly
• peanut butter
• sandwich

3H₂ + 1 N₂ = 2NH₃

How many gram of N₂ will be needed if there is 4 moles of NH₃ produced?

• 448 g

• 56 g

• 0.29 grams

• 112 grams

2C₂H₆ + 7O₂ = 4CO₂ + 6H₂O
What mass of CO₂ will be produced from the reaction of 37.5 g C₂H₆?

• 27.5 g
• 12.8 g
• 55 g
• 110 g

Who performed at the 2018 superbowl half time show?

• Beyonce

• Justin Timberlake

• One Direction

• Drake