The diagrams display four items of laboratory apparatus: balance, pipette, stop-clock and thermometer. Which piece of equipment is needed to determine whether dissolving a salt in water is an exothermic process?
- Abalance ✗, pipette ✗, stop-clock ✗, thermometer ✓
- Bbalance ✓, pipette ✗, stop-clock ✗, thermometer ✓
- Cbalance ✗, pipette ✓, stop-clock ✗, thermometer ✓
- Dbalance ✓, pipette ✗, stop-clock ✓, thermometer ✗