Dry air is led over hot copper until every trace of oxygen has reacted. The gas volume after the reaction is $120\,\text{cm}^3$. What was the initial volume of dry air?
- A$132\,\text{cm}^3$
- B$152\,\text{cm}^3$
- C$180\,\text{cm}^3$
- D$570\,\text{cm}^3$
Chemistry 0620 · IGCSE · Solids, liquids and gases