LG10 MHS CHEM - Stoichiometry Quizizz

WARM-UP QUESTION
In a chemical reaction, the limiting reactant...

• remains left over after the reaction is complete.
• makes the most amount of product.
• gives the smallest quantity of reaction.
• has the smallest coefficient.

Tags

NGSS.HS-PS1-7

WARM-UP QUESTION
In a chemical reaction, the theoretical yield is the...

• reactant that runs out first.
• maximum amount of product that can be made.
• percent of product that was actually made.
• maximum amount of reactant that can be consumed.

Tags

NGSS.HS-PS1-7

WARM-UP QUESTION
In a chemical reaction, the percent yield is the...

• actual yield divided by the theoretical yield times 100%.
• percent of reactants used up during a reaction.
• percent of reactants left over after a reaction.
• theoretical yield divided by the actual yield times 100%.

QUESTION 1
A Krabby Patty requires 2 buns (B), a krabby patty (Kp), 3 lettuce (L), 4 onions (O), secret sauce (Ss), and don't forget the 5 pickles (P). Given 204 B, 72 Kp, 135 L, 200 O, 100 Ss, and 325 P, what is the limiting reactant?

• Krabby Patty (Kp)
• Secret Sauce (Ss)
• Pickles (P)
• Lettuce (L)

Tags

NGSS.HS-PS1-7

QUESTION 1
A Krabby Patty requires 2 buns (B), a krabby patty (Kp), 3 lettuce (L), 4 onions (O), secret sauce (Ss), and don't forget the 5 pickles (P). Given 204 B, 72 Kp, 135 L, 200 O, 100 Ss, and 325 P, what is the theoretical yield of Krabby Patties?

• 45 Krabby Patties
• 50 Krabby Patties
• 72 Krabby Patties
• 135 Krabby Patties

QUESTION 2
The thermite reaction produces solid iron (Fe) per the following reaction:
2 Al + Fe₂O₃ → Al₂O₃ + 2 Fe
Given 76 moles of Al and 65 moles of Fe₂O₃, what is the limiting reactant for this reaction?

• Al
• Fe₂O₃
• Al₂O₃
• Fe

Tags

NGSS.HS-PS1-7

QUESTION 2
The thermite reaction produces solid iron (Fe) per the following reaction:
2 Al + Fe₂O₃ → Al₂O₃ + 2 Fe
Given 76 moles of Al and 65 moles of Fe₂O₃, what is the theoretical yield of Al₂O₃?

• 38 mol Al₂O₃
• 65 mol Al₂O₃
• 76 mol Al₂O₃
• 152 mol Al₂O₃

Tags

NGSS.HS-PS1-7

QUESTION 2
The thermite reaction produces solid iron (Fe) per the following reaction:
2 Al + Fe₂O₃ → Al₂O₃ + 2 Fe
Given 76 moles of Al and 65 moles of Fe₂O₃, what is the theoretical yield of Fe?

• 38 mol Fe
• 65 mol Fe
• 76 mol Fe
• 152 mol Fe

Tags

NGSS.HS-PS1-7

QUESTION 3
Solid calcium reacts with water to make flammable hydrogen gas per the following reaction:
Ca + 2 H₂O → Ca(OH)₂ + H₂
Given 21 moles of H₂O, how many moles of Ca are needed to complete the reaction?

• 1 mol Ca
• 10.5 mol Ca
• 21 mol Ca
• 42 mol Ca

Tags

NGSS.HS-PS1-7

QUESTION 3
Solid calcium reacts with water to make flammable hydrogen gas per the following reaction:
Ca + 2 H₂O → Ca(OH)₂ + H₂
Given 21 moles of H₂O, what is the theoretical yield of Ca(OH)₂?

• 1 mol Ca(OH)₂
• 10.5 mol Ca(OH)₂
• 21 mol Ca(OH)₂
• 42 mol Ca(OH)₂

Tags

NGSS.HS-PS1-7