The diagrams illustrate four items of laboratory equipment: a balance, a pipette, a stop-clock and a 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 ✗