Chemistry Mole & Stoichiometry Quiz Online

Chemistry mole & stoichiometry concepts are essential to learning for every level in chemistry courses. Here, we have compiled many chemistry mole and stoichiometry quizzes free for students of grades 11 and 12. We hope you will find this very useful for your regular exam preparations and entry tests at undergraduate levels, particularly for medical and engineering students (MDCAT, ECAT, NUST, NUMS, JEE, NEET).
Before taking this quiz, you can revise your fundamental concepts in chemistry by using the following of our free resources.

Click Here For Chemistry Mole & Stoichiometry Concepts Articles for Online Reading

Click Here For Free Chemistry Mole & Stoichiometry Concepts Video Lectures

INSTRUCTIONS:

1. Select the correct option after having confirmation in your mind.
2. Once you select one option, the system will not allow you to change.
3. After your selection, the system will automatically let you know about your answer right or wrong.
4. Use the Next Button to continue to take questions on this particular quiz. Every quiz has multiple questions on multiple pages.
5. On the last page, there will be the Finish Button instead of the Next Button.
6. Press Finish Button to check your consolidated quiz result.
7. You should achieve 70% to pass on a particular quiz after attempting all questions in the quiz.
8. You can try unlimited times to improve your score.
9. Best of luck.

Now, Start taking quiz.

Results

#1. A gas sample contains 16.0 g of CH4, 16.0 g of O2, 16.0 g of SO2, and 33.0 g of CO2. What is the total number of moles of gas in the sample?

4.00 moles

4.00 moles

2.50 moles

2.50 moles

3.00 moles

3.00 moles

2.25 moles

2.25 moles

2.75 moles

2.75 moles

#2. How many grams of calcium fluoride contain 38 grams of fluoride atoms?

38 grams

38 grams

57 grams

57 grams

39 grams

39 grams

59 grams

59 grams

78 grams

78 grams

#3. How many mL of SO2 gas are present at STP in a 100 gram sample that is 6.4% SO2 by mass

2.24 ml

2.24 ml

2240 ml

2240 ml

22.4 ml

22.4 ml

1120 ml

1120 ml

11.2 ml

11.2 ml

#4. How many moles of chloride ions are present in a 66.7 gram sample of AlCl3?

1.5 moles

1.5 moles

1.0 mole

1.0 mole

2.0 moles

2.0 moles

1.33 moles

1.33 moles

0.5 moles

0.5 moles

#5. How many oxygen atoms are there in 22.0 g of carbon dioxide?

1.20 x1024

1.20 x1024

1.42 x1024

1.42 x1024

1.02 x1024

1.02 x1024

5.09 x1023

5.09 x1023

6.02 x1023

6.02 x1023

#6. The empirical formula for an oxide of nitrogen that is 30.4% by mass nitrogen is

NO

NO

NO3

NO3

NO4

NO4

NO2

NO2

N2O

N2O

#7. Rubbing alcohol was found to contain 47.0 % carbon, 10.0 % hydrogen, and the remaining mass was due to oxygen. What is the empirical formula of rubbing alcohol?

C2H4O

C2H4O

C2H6O

C2H6O

CHO

CHO

C3H8O

C3H8O

CH3O

CH3O

#8. Nitrogen oxide is oxidized in air to give brown nitrogen dioxide. 2NO(g) + O2(g) → 2 NO2(g) If you have 2.2 moles of NO,

You need 2.0 moles of O2 for complete reaction and produce 1.0 moles of NO2.

You need 2.0 moles of O2 for complete reaction and produce 1.0 moles of NO2.

You need 1.1 moles of O2 for complete reaction and produce 2.2 moles of NO2.

You need 1.1 moles of O2 for complete reaction and produce 2.2 moles of NO2.

You need 1.0 moles of O2 for complete reaction and produce 2.0 moles of NO2.

You need 1.0 moles of O2 for complete reaction and produce 2.0 moles of NO2.

You need 2.2 moles of O2 for complete reaction and produce 2.2 moles of NO2

You need 2.2 moles of O2 for complete reaction and produce 2.2 moles of NO2

You need 1.1 moles of O2 for complete reaction and produce 3.3 moles of NO2.

You need 1.1 moles of O2 for complete reaction and produce 3.3 moles of NO2.

#9. The very stable compound SF6 is made by burning sulfur in an atmosphere of fluorine. S8(s) + 24F2(g) → 8SF6(g) If you need 2.50 moles of SF6, you will need to use

0.125 moles of S8 and 3.00 moles of F2.

0.125 moles of S8 and 3.00 moles of F2.

1.00 moles of S8 and 24.0 moles of F2.

1.00 moles of S8 and 24.0 moles of F2.

0.313 moles of S8 and 7.50 moles of F2.

0.313 moles of S8 and 7.50 moles of F2.

2.00 moles of S8 and 12.0 moles of F2.

2.00 moles of S8 and 12.0 moles of F2.

8.00 moles of S8 and 24.0 moles of F2.

8.00 moles of S8 and 24.0 moles of F2.

#10. Magnesium and nitrogen react in a combination reaction to produce magnesium nitride: 3 Mg + N2 → Mg3N2 In a particular experiment, a 9.27-g sample of N2 reacts completely. The mass of Mg consumed is __________ g.

8.04

8.04

24.1

24.1

0.92

0.92

13.9

13.9

16.1

16.1

Next

 If you think this quiz is worthwhile, please encourage by sharing us with your friends, family members, and classmates on social media. It will boost our intent and confidence to produce more free resources on chemistry.

Also, follow us on our social media to get the latest free resources and updates.If you have any questions or suggestions, please use the comment box below to let us know. We will love to hear from you.You can also comment on your quiz percentage below.