Calculating Formula Mass

What is the relative molecular mass of fluorine gas, F₂?

• 19

• 38

• 9

• 18

What is the relative formula mass of NaOH?

• 20

• 39

• 40

• 45

The chemical formula of potassium hexacyanoferrate (III) is K₃Fe(CN)₆. What is the relative formula mass?

RAM [ K=39, Fe=56, C= 12, N= 14]

• 121

• 199

• 251

• 329

Using your periodic Table, calculate the formula mass of N₂.

Answer:

Using your periodic Table, calculate the formula mass of CH₄.

Answer:

Using your periodic Table, calculate the formula mass of CaCO₃.

Answer:

Using your periodic Table, calculate the formula mass of NH₃.

Using your periodic Table, calculate the formula mass of Fe₂O₃.

Answer:

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NGSS.MS-PS1-1

Using your periodic Table, calculate the formula mass of C₅H₁₂.

Answer:

Using your periodic Table, calculate the formula mass of FeSO₄.

Answer: