Multiple choice

What is the rise in temperature of 5 kg of water, if it is given 84000 J of heat energy? Specific heat capacity of water = 4200 J/(kg K).

  1. 100 K

  2. 4 K

  3. 373oC

  4. 2.73oC

  5. 0.366oC

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Specific heat capacity of water = 4200 J/(kg K). Heat energy input = 84000 = 5 x 4200 x temperature rise. Temperature rise = 84000/[5 x 4200] = 4 K.