The diet of a 60kg person provides 12,000kJ daily. If this amount of energy were added to 60kg of water . . .?

Question

By how much would its temperature be increased?

Answer 1

A Calorie is the energy to raise 1 k-gram of water 1 degree celsius, and there are 4.184 kJ per Calorie, so 12000 kJ equals 2868 Calories, which would heat 60 k-grams of water 47.8 degrees C.

Answer 2

The specific heat capacity of water is 4.2 kJ/kg/degree C.

Dividing 12 000 kJ by 4.2 would give 2857 which is further divided by 60 to give a change in temperature of 47.6 deg. C

Answer 3

the answer is..........
A Calorie is the energy to raise 1 k-gram of water 1 degree celsius, and there are 4.184 kJ per Calorie, so 12000 kJ equals 2868 Calories, which would heat 60 k-grams of water 47.8 degrees C.