How many kilojoules are released when you raise the temperature of water from 2 c to 80c?

To calculate the kilojoules released when raising the temperature of water from 2°C to 80°C, you can use the formula ( Q = mc\Delta T ), where ( Q ) is the heat energy in joules, ( m ) is the mass of water in kilograms, ( c ) is the specific heat capacity of water (approximately 4,186 J/kg°C), and ( \Delta T ) is the change in temperature. For 1 kg of water, the temperature change (( \Delta T )) is 78°C (80°C - 2°C). Thus, ( Q = 1 \times 4,186 \times 78 ), which equals approximately 326,508 J, or about 326.5 kJ.