$0.25\,\text{g}$ of anhydrous magnesium nitrate is heated strongly until it has fully decomposed. What total volume of gas is formed, measured under room conditions?
- A$40\,\text{cm}^3$
- B$81\,\text{cm}^3$
- C$101\,\text{cm}^3$
- D$202\,\text{cm}^3$
Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry