Free Printable From Empirical to Molecular Formula

1.

If the empirical formula of a compound is $CH_2$ and its molar mass is 56 g/mol, what is the molecular formula?

a)

$CH_2$

b)

$C_2H_4$

c)

$C_3H_6$

d)

$C_4H_8$

2.

A compound has an empirical formula of $NO_2$ and a molar mass of 92 g/mol. What is its molecular formula?

a)

$NO_2$

b)

$N_2O_4$

c)

$N_3O_6$

d)

$N_4O_8$

3.

The empirical formula mass of $C_2H_5$ is 29 g/mol. If the molar mass of the compound is 58 g/mol, what is the molecular formula?

a)

$C_2H_5$

b)

$C_4H_{10}$

c)

$C_3H_8$

d)

$C_5H_{12}$

4.

A compound has an empirical formula of $CH$ and a molar mass of 78 g/mol. What is its molecular formula?

a)

$CH$

b)

$C_2H_2$

c)

$C_6H_6$

d)

$C_3H_3$

5.

If the empirical formula mass of $C_3H_7$ is 43 g/mol and the molar mass of the compound is 86 g/mol, what is the molecular formula?

a)

$C_3H_7$

b)

$C_6H_{14}$

c)

$C_4H_8$

d)

$C_5H_{12}$

6.

A compound has an empirical formula of $P_2O_5$ and a molar mass of 284 g/mol. What is its molecular formula?

a)

$P_2O_5$

b)

$P_4O_{10}$

c)

$P_3O_8$

d)

$P_5O_{12}$

7.

A compound has an empirical formula of $C_2H_4O$ and a molar mass of 88 g/mol. What is its molecular formula?

a)

$C_2H_4O$

b)

$C_4H_8O_2$

c)

$C_6H_{12}O_3$

d)

$C_8H_{16}O_4$

8.

A compound has an empirical formula of $SO_3$ and a molar mass of 160 g/mol. What is its molecular formula?

a)

$SO_3$

b)

$S_2O_6$

c)

$S_3O_9$

d)

$S_4O_{12}$

9.

A compound has an empirical formula of $C_5H_{12}$ and a molar mass of 300 g/mol. What is its molecular formula?

a)

$C_5H_{12}$

b)

$C_{10}H_{24}$

c)

$C_{15}H_{36}$

d)

$C_{20}H_{48}$

10.

A compound has an empirical formula of $NH_2$ and a molar mass of 64 g/mol. What is its molecular formula?

a)

$NH_2$

b)

$N_2H_4$

c)

$N_3H_6$

d)

$N_4H_8$

11.

A compound has an empirical formula of $CH_2O$ and a molar mass of 180 g/mol. What is its molecular formula?

a)

$CH_2O$

b)

$C_3H_6O_3$

c)

$C_6H_{12}O_6$

d)

$C_9H_{18}O_9$

12.

A compound has an empirical formula of $C_2H_2$ and a molar mass of 78 g/mol. What is its molecular formula?

a)

$C_2H_2$

b)

$C_3H_3$

c)

$C_4H_4$

d)

$C_6H_6$

13.

A compound has an empirical formula of $C_2H_5$ and a molar mass of 116 g/mol. What is its molecular formula?

a)

$C_2H_5$

b)

$C_4H_{10}$

c)

$C_6H_{15}$

d)

$C_8H_{20}$

14.

A compound has an empirical formula of $C_3H_4$ and a molar mass of 120 g/mol. What is its molecular formula?

a)

$C_3H_4$

b)

$C_6H_8$

c)

$C_9H_{12}$

d)

$C_{12}H_{16}$

15.

A compound has an empirical formula of $C_4H_6$ and a molar mass of 108 g/mol. What is its molecular formula?

a)

$C_4H_6$

b)

$C_6H_9$

c)

$C_8H_{12}$

d)

$C_{12}H_{18}$

16.

A compound has an empirical formula of $C_2H_3O$ and a molar mass of 86 g/mol. What is its molecular formula?

a)

$C_2H_3O$

b)

$C_4H_6O_2$

c)

$C_6H_9O_3$

d)

$C_8H_{12}O_4$

17.

A compound has an empirical formula of $C_2H_6$ and a molar mass of 60 g/mol. What is its molecular formula?

a)

$C_2H_6$

b)

$C_3H_9$

c)

$C_4H_{12}$

d)

$C_5H_{15}$

18.

A compound has an empirical formula of $C_3H_8$ and a molar mass of 132 g/mol. What is its molecular formula?

a)

$C_3H_8$

b)

$C_6H_{16}$

c)

$C_9H_{24}$

d)

$C_{12}H_{32}$

19.

A compound has an empirical formula of $C_2H_4O$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_2H_4O$

b)

$C_4H_8O_2$

c)

$C_6H_{12}O_3$

d)

$C_8H_{16}O_4$

20.

A compound has an empirical formula of $C_2H_2O$ and a molar mass of 170 g/mol. What is its molecular formula?

a)

$C_2H_2O$

b)

$C_4H_4O_2$

c)

$C_6H_6O_3$

d)

$C_{10}H_{10}O_5$

21.

A compound has an empirical formula of $C_2H_3O$ and a molar mass of 172 g/mol. What is its molecular formula?

a)

$C_2H_3O$

b)

$C_4H_6O_2$

c)

$C_6H_9O_3$

d)

$C_8H_{12}O_4$

22.

A compound has an empirical formula of $C_3H_6O$ and a molar mass of 180 g/mol. What is its molecular formula?

a)

$C_3H_6O$

b)

$C_6H_{12}O_2$

c)

$C_9H_{18}O_3$

d)

$C_{12}H_{24}O_4$

23.

A compound has an empirical formula of $C_2H_4O$ and a molar mass of 132 g/mol. What is its molecular formula?

a)

$C_2H_4O$

b)

$C_4H_8O_2$

c)

$C_6H_{12}O_3$

d)

$C_8H_{16}O_4$

24.

A compound has an empirical formula of $C_2H_2$ and a molar mass of 130 g/mol. What is its molecular formula?

a)

$C_2H_2$

b)

$C_4H_4$

c)

$C_5H_5$

d)

$C_{10}H_{10}$

25.

A compound has an empirical formula of $C_3H_4O$ and a molar mass of 168 g/mol. What is its molecular formula?

a)

$C_3H_4O$

b)

$C_6H_8O_2$

c)

$C_9H_{12}O_3$

d)

$C_{12}H_{16}O_4$

26.

A compound has an empirical formula of $C_2H_5$ and a molar mass of 116 g/mol. What is its molecular formula?

a)

$C_8H_{20}$

b)

$C_4H_{10}$

c)

$C_{12}H_{30}$

d)

$C_{16}H_{40}$

27.

If the empirical formula mass of $CH_3O$ is 31 g/mol and the molar mass of the compound is 124 g/mol, what is the molecular formula?

a)

$C_4H_{12}O_4$

b)

$CH_3O$

c)

$C_2H_6O_2$

d)

$C_3H_9O_3$

28.

A compound has an empirical formula of $C_5H_{10}$ and a molar mass of 150 g/mol. What is its molecular formula?

a)

$C_{10}H_{20}$

b)

$C_5H_{10}$

c)

$C_{15}H_{30}$

d)

$C_{20}H_{40}$

29.

A compound has an empirical formula of $C_3H_6$ and a molar mass of 84 g/mol. What is its molecular formula?

a)

$C_6H_{12}$

b)

$C_9H_{18}$

c)

$C_{12}H_{24}$

d)

$C_3H_6$

30.

If the empirical formula mass of $CH_2O$ is 30 g/mol and the molar mass of the compound is 180 g/mol, what is the molecular formula?

a)

$C_6H_{12}O_6$

b)

$C_3H_6O_3$

c)

$C_2H_4O_2$

d)

$CH_2O$

31.

A compound has an empirical formula of $C_4H_{10}$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_{16}H_{40}$

b)

$C_{12}H_{30}$

c)

$C_8H_{20}$

d)

$C_4H_{10}$

32.

A compound has an empirical formula of $C_4H_8$ and a molar mass of 224 g/mol. What is its molecular formula?

a)

$C_4H_8$

b)

$C_8H_{16}$

c)

$C_{12}H_{24}$

d)

$C_{16}H_{32}$

33.

A compound has an empirical formula of $C_2H_6O$ and a molar mass of 180 g/mol. What is its molecular formula?

a)

$C_{10}H_{30}O_5$

b)

$C_2H_6O$

c)

$C_6H_{18}O_3$

d)

$C_4H_{12}O_2$

34.

If the empirical formula mass of $C_5H_{12}$ is 72 g/mol and the molar mass of the compound is 144 g/mol, what is the molecular formula?

a)

$C_{20}H_{48}$

b)

$C_{15}H_{36}$

c)

$C_{10}H_{24}$

d)

$C_5H_{12}$

35.

A compound has an empirical formula of $C_2H_2O$ and a molar mass of 132 g/mol. What is its molecular formula?

a)

$C_6H_6O_3$

b)

$C_4H_4O_2$

c)

$C_8H_8O_4$

d)

$C_2H_2O$

36.

If the empirical formula mass of $C_3H_7O$ is 59 g/mol and the molar mass of the compound is 236 g/mol, what is the molecular formula?

a)

$C_6H_{14}O_2$

b)

$C_{12}H_{28}O_4$

c)

$C_3H_7O$

d)

$C_9H_{21}O_3$

37.

A compound has an empirical formula of $C_2H_5O$ and a molar mass of 180 g/mol. What is its molecular formula?

a)

$C_2H_5O$

b)

$C_4H_{10}O_2$

c)

$C_6H_{15}O_3$

d)

$C_{10}H_{25}O_5$

38.

A compound has an empirical formula of $C_4H_8O$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_{12}H_{24}O_3$

b)

$C_4H_8O$

c)

$C_8H_{16}O_2$

d)

$C_{16}H_{32}O_4$

39.

If the empirical formula mass of $C_2H_3O$ is 43 g/mol and the molar mass of the compound is 129 g/mol, what is the molecular formula?

a)

$C_2H_3O$

b)

$C_3H_6O_2$

c)

$C_6H_9O_3$

d)

$C_4H_6O_2$

40.

A compound has an empirical formula of $C_5H_6$ and a molar mass of 198.33 g/mol. What is its molecular formula?

a)

$C_{15}H_{18}$

b)

$C_{10}H_{12}$

c)

$C_5H_6$

d)

$C_{20}H_{24}$

41.

A compound has an empirical formula of $C_3H_8$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_6H_{16}$

b)

$C_3H_8$

c)

$C_9H_{24}$

d)

$C_{12}H_{32}$

42.

If the empirical formula mass of $C_2H_4O$ is 44 g/mol and the molar mass of the compound is 176 g/mol, what is the molecular formula?

a)

$C_8H_{16}O_4$

b)

$C_4H_8O_2$

c)

$C_6H_{12}O_3$

d)

$C_2H_4O$

43.

A compound has an empirical formula of $CH_3$ and a molar mass of 90 g/mol. What is its molecular formula?

a)

$C_6H_{18}$

b)

$CH_3$

c)

$C_2H_6$

d)

$C_3H_9$

44.

A compound has an empirical formula of $C_4H_6O$ and a molar mass of 168 g/mol. What is its molecular formula?

a)

$C_{16}H_{24}O_4$

b)

$C_{12}H_{18}O_3$

c)

$C_8H_{12}O_2$

d)

$C_4H_6O$

45.

If the empirical formula mass of $CH_3O$ is 31 g/mol and the molar mass of the compound is 124 g/mol, what is the molecular formula?

a)

$C_2H_6O_2$

b)

$C_4H_{12}O_4$

c)

$C_3H_9O_3$

d)

$C_5H_{15}O_5$

46.

A compound has an empirical formula of $C_2H_3$ and a molar mass of 54 g/mol. What is its molecular formula?

a)

$C_2H_3$

b)

$C_4H_6$

c)

$C_6H_9$

d)

$C_8H_{12}$

47.

A compound has an empirical formula of $C_3H_8$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_3H_8$

b)

$C_{12}H_{32}$

c)

$C_6H_{16}$

d)

$C_9H_{24}$

48.

If the empirical formula mass of $C_2H_6O$ is 46 g/mol and the molar mass of the compound is 138 g/mol, what is the molecular formula?

a)

$C_3H_9O_{1.5}$

b)

$C_6H_{18}O_3$

c)

$C_4H_{12}O_2$

d)

$C_2H_6O$

49.

A compound has an empirical formula of $C_2H_2O$ and a molar mass of 176 g/mol. What is its molecular formula?

a)

$C_2H_2O$

b)

$C_4H_4O_2$

c)

$C_6H_6O_3$

d)

$C_8H_8O_4$

From Empirical to Molecular Formula

Total questions: 49

Worksheet time: 25mins

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