Stoichiometry Trivia Test: MCQ Quiz!

9 Questions | By Tbautista | Updated: Mar 21, 2022 | Attempts: 545

Questions

Settings

Create your own Quiz

Stoichiometry Trivia Test: MCQ Quiz! - Quiz

Questions and Answers

1.

Ammonia, , and copper (II) oxide react to form solid copper, water and nitrogen gas. What are the coefficients for the balanced chemical equations.
- A.
  
  2,2,2,1,1
- B.
  
  1,2,1,2,1
- C.
  
  2,3,3,3,1
2.

If 40g of ammonia reacts with 80.0g copper (II) oxide, determine the limiting reactant. Use nitrogen gas as your unknown.
- A.
  
  Ammonia
- B.
  
  Copper(II) oxide
3.

Determine the mass of nitrogen gas produced in the reaction.
- A.
  
  9.4 g
- B.
  
  14.0g
- C.
  
  28.0 g
4.

Which reactant is the excess reactant?
- A.
  
  Ammonia
- B.
  
  Copper(II) oxide
5.

How much of the excess reactant remains after the reaction? **Ammonia is the excess reactant, meaning it will not be completely used up in a reaction. In other words, you will not be using all 40g of ammonia given. In order to find out how much is left over after the reaction, do a mass-mass problem. 80g CuO is the given and grams of ammonia is the unknown. This answer is how much ammonia is used up. Now, figure out how much is leftover!
- A.
  
  19.8 g
- B.
  
  32.4 g
- C.
  
  28.6 g
6.

When copper(II) oxide is heated with hydrogen gas, water and copper metal is produced. What mass of copper can be obtained if 32.0g of copper(II) oxide is used?
- A.
  
  24.3g
- B.
  
  25.5g
- C.
  
  27.6g
7.

Nitrogen monoxide reacts with oxygen gas to produce nitrogen dioxide. What are the coefficients that balance the equation?
- A.
  
  2,1,2
- B.
  
  1,2,1
- C.
  
  2,1,1
8.

What is the theoretical yield of hydrogen gas if 36.0 g of water decomposes to produce hydrogen gas and oxygen gas?
- A.
  
  2.02 g H2
- B.
  
  1.01 g H2
- C.
  
  4.04 g H2
9.

What is the percent yield of hydrogen gas if 3.80g of hydrogen is collected in the lab?
- A.
  
  94%
- B.
  
  88%
- C.
  
  96%