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Worksheets

Stoichiometry

Total questions: 10

Worksheet time: 30mins

Name
Class
Date
1.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

What is the mass of one mole of HCl? (Hydrogen and Chlorine)

a)

35.45 g

b)

70.9 g

c)

36.458 g

d)

145.832

2.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

If we have 437.496 g of HCl come out of the reaction, how many moles of HCl were there?

a)

1

b)

3

c)

12

d)

6

3.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

What coefficient is in front of CCl4?

a)

1

b)

2

c)

4

d)

6

4.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

When do we use the coefficients in front of these compounds?

a)

When finding the mass of one mole of a compound.

b)

When finding the total mass that we have of a compound.

c)

When finding the number of moles of OTHER compounds.

d)

When finding the number of moles from a mass.

5.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

If we have 12 moles of HCl come out of the reaction, how many moles of CH4 had to go in to the reaction?

a)

1

b)

3

c)

4

d)

12

6.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

If we have 12 moles of HCl come out of the reaction, how many moles of Cl2 had to go in to the reaction?

a)

1

b)

4

c)

6

d)

12

7.

CH4   +   4 Cl2   →   CCl4  +  4 HCl

If we have 3 moles of CH4 go in to the reaction, how many grams of CH4 was there?

a)

39.057 g

b)

16.043 g

c)

48.129 g

d)

49.052 g

8.

2NaCl + F2 → 2NaF + Cl2

In this reaction, I combined 233.76 g of NaCl and 37.996 g of F2.

In the end, my scale read a total mass of the products as 324.742 g.

Are my scales working properly?

a)

No

b)

Yes

9.

How many total compounds are in 4 moles of a specific compound?

a)

6 x 10^23

b)

12 x 10^23

c)

18 x 10^23

d)

24 x 10^23

10.

How many atoms or compounds are in a mole?

a)

62 x 10^23

b)

6 x 10^23

c)

6 x 10^21

d)

8 x 10^23