
Stoichiometry (Limiting & Excess) Bell-Ringer
Quiz
•
Chemistry
•
9th - 12th Grade
•
Medium

Ankita Das
Used 11+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which term describes the substance that is completely consumed (used up) during a chemical reaction?
Excess reactant
Limiting reactant
Percent yield
Theoretical yield
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jesus and Jonathan conducted a chemical reaction. They weighed out 5.43 grams of NaOH after the hydroxide ions all reacted. This is known as the:
Excess yield
Limiting yield
Theoretical yield
Molar mass
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Once you calculate how much each reactant will produce, how do you know which reactant is the limiting reactant?
The one that produces more product
The one that starts out with the lowest amount of reactant
The one that produces the least product
The one that is left over
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If ammonia, NH3, is burned in air, the following reaction takes place:
4 NH3 + 3 O2 → 2 N2 + 6 H2O
Given that you started with 51.0 g of NH3, what mass of water will be produced?
What are you trying to find?
Moles of A
Grams of A
Moles of B
Grams of B
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the molar ratio of O2 to CO2?
3/5
5/3
1/5
5/4
5/1
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