Empirical Formula WS



Empirical Formula WS

1. Write the Empirical Formula for Each of the Following:

a. P4O6

b. C6H9

c. CH2OHCH2OH

d. BrCl2

e. C6H8O6

f. C10H22

g. Cu2C2O4

h. Hg2F2

2. Write the Empirical Formula for Each of the Following:

a. A compound composed of: 72% iron and 27.6% oxygen by mass.

b. A compound composed of: 9.93% carbon, 58.6% chlorine, and 31.4% fluorine.

c. A compound composed of: .556g carbon and .0933g hydrogen.

3. Write the Molecular Formula for Each of the Following:

a. A compound with a molecular mass of 70g/mol and an empirical formula of CH2.

b. A compound with a molecular mass of 46.0g/mol and an empirical formula of NO2

Molecular Formula Worksheet

Write the molecular formulas of the following compounds:

1) A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole.

2) A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole.

3) A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole.

4) A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole.

a. P2O3

b. C2H3

c. CH3O

d. BrCl2

e. C3H4O3

f. C5H11

g. CuCO2

h. HgF

2.

a. Fe3O4

b. CCl2F2

c. CH2

3.

a. C5H10

b. NO2

Molecular Formula Worksheet ANSWER KEY

Write the molecular formulas of the following compounds:

1) A compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole. C4O2H8

2) A compound with an empirical formula of C4H4O and a molar mass of 136 grams per mole. C8H8O2

3) A compound with an empirical formula of CFBrO and a molar mass of 254.7 grams per mole. C2F2Br2O2

4) A compound with an empirical formula of C2H8N and a molar mass of 46 grams per mole. C2H8N

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