400 g of water are emptied at 20 ° C in a vessel. The container is placed at

Question

Fire of a flame that gives it a certain amount of thermal energy of
So that it takes 5 minutes for the water to reach a temperature of 90 ° C.
If the vessel does not absorb thermal energy, a) how much energy did the
Water ?, b) what power does the system heat the water? Answer
The same questions assuming that the container and the environment absorb the
50% of the energy delivered by the thermal source.

I need help, I transformed cal/m to watts but it gives 390.761 Watts, and the exercise says it is 3,33 watts. Can somebody guide me in how to make this exercise. (All except "a")

Answer 1

Thanks for sharing your answer. It is right. I obtained 390.5 watts.