How much energy is needed to raise 500 grams of water from 10 degrees Celsius to 40 degrees Celsius?

Answer 1

well what is the specific heat or heat capacity of water in
Joules or Calories (whichever your class is using)per gram (or kilogram or oz or pound) degree centigrade (or Fahrenheit)
anyway call it C

Heat in = C * 500 (40-10)

Answer 2

15000