Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

When a $5.00\,\text{g}$ sample of an anhydrous Group II metal nitrate is heated strongly, its mass decreases by $3.29\,\text{g}$. Which metal does it contain?

Amagnesium
Bcalcium
Cstrontium
Dbarium

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