How much energy is required to boil a kettle of water containing 1 litre at 15°C (Specific heat capacity of water = 4.18?
How much energy is required to boil a kettle of water containing 1 litre at 15°C (Specific heat capacity of water = 4.18?
Explanation
To boil 1 liter of water from 15°C to 100°C, the energy required is:
Q = mcΔT
= 1 kg × 4.18 kJ/kg°C × (100°C - 15°C)
= 1 × 4.18 × 85
= 355 kJ