Molar Mass Worksheet



Calculate the molar masses of the following chemicals:

1) Cl2

2) KOH

3) BeCl2

4) FeCl3

5) BF3

6) CCl2F2

7) Mg(OH)2

8) UF6

9) SO2

10) H3PO4

11) (NH4)2SO4

12) CH3COOH

13) Pb(NO3)2

14) Ga2(SO3)3

11) How many moles are in 15 grams of lithium?

12) How many grams are in 2.4 moles of sulfur?

13) How many moles are in 22 grams of argon?

14) How many grams are in 88.1 moles of magnesium?

15) How many moles are in 2.3 grams of phosphorus?

16) How many grams are in 11.9 moles of chromium?

17) How many moles are in 9.8 grams of calcium?

18) How many grams are in 238 moles of arsenic?

What are the molecular weights of the following compounds?

19) NaOH

20) H2O

21) MgCl2

22) H3PO4

23) Mn2Se7

24) (NH4)2SO4

25) How many grams are in 4.5 moles of sodium fluoride.?

26) How many moles are in 98.3 grams of aluminum hydroxide.?

27) How many grams are in 0.02 moles of beryllium iodide.?

28) How many moles are in 68 grams of copper (II) hydroxide.?

29) How many grams are in 3.3 moles of potassium sulfide.?

30) How many moles are in 1.2 x 103 grams of ammonia.?

31) How many grams are in 2.3 x 10-4 moles of calcium phosphate.?

32) How many moles are in 3.4 x 10-7 grams of silicon dioxide.?

33) How many grams are in 1.11 moles of manganese (VII) sulfate.?

1) Cl2 71 g/mol

2) KOH 56.1 g/mol

3) BeCl2 80 g/mol

4) FeCl3 162.3 g/mol

5) BF3 67.8 g/mol

6) CCl2F2 121 g/mol

7) Mg(OH)2 58.3 g/mol

8) UF6 352 g/mol

9) SO2 64.1 g/mol

10) H3PO4 98 g/mol

11) (NH4)2SO4 132.1 g/mol

12) CH3COOH 60 g/mol

13) Pb(NO3)2 331.2 g/mol

14) Ga2(SO3)3 379.7 g/mol

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