Chapter 12 Stoichiometry

Chapter 12 Stoichiometry

9th - 12th Grade

20 Qs

quiz-placeholder

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Chapter 12 Stoichiometry

Chapter 12 Stoichiometry

Assessment

Quiz

Chemistry

9th - 12th Grade

Hard

NGSS
HS-PS1-7, HS-PS1-6

Standards-aligned

Created by

Charles Martinez

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Given the unbalanced equation to create ammonia (N2 + H2 → NH3), how many grams of hydrogen are needed to produce 5 moles of ammonia?

7.5 mol NH3

15 mol NH3

17 mol NH3

5.7 mol NH3

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

After balancing the equation: BiCl3 + H2S →Bi2S3 + HCl, how many moles of HCl are produced?

1 mol HCl

8 mol HCl

3 mol HCl

6 mol HCl

Tags

NGSS.HS-PS1-7

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Find the total number of all possible mole ratios: C₃H₈ + O₂ →CO₂ + H₂O

9

12

3

4

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Balance the following chemical equation, C₆H₁₄ + O₂ → CO₂ + H₂O , then find the limiting reagent given 20.1 grams of O₂ reacts with 15.8 grams of C₆H₁₄ . (number sequence is numbers to balance equation)

2,19,12,14 ; C₆H₁₄ is limiting reagent

1,9,6,7 ; O₂ is limiting reagent

2,19,12,14 ; O₂ is limiting reagent

1,9,6,7 ; C₆H₁₄ is limiting reagent

Tags

NGSS.HS-PS1-7

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If 50.0 g of silicon dioxide is heated with an excess of carbon, 27.9 g of silicon carbide is produced. What is the percent yield of this reaction?

SiO2(s) + 3C(s) →SiC(s) + 2CO (g)

83.5%

29.0%

67.2%

45.1%

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In the given unbalanced equation H2O2 → H2O + O2, what is the theoretical yield of H2O in grams if 6 moles of H2O2 is decomposed?

100 g H2O

144 g H2O

108 g H2O

128 g H2O

Tags

NGSS.HS-PS1-7

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The following equation represents a laboratory preparation for oxygen gas: 2KClO3(s) → 2KCl (s) + 3O2 (g). How many moles of O2 form if 3.0 mol of KClO3 are totally consumed?

5.0 mol O2

6.5 mol O2

4.5 mol O2

5.7 mol O2

Tags

NGSS.HS-PS1-7

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