Question

A physicist converted 2 kg of water at 37 degrees celcius to steam at 100 degrees celcius. Assuming no heat is lost, calculate the amount of energy needed to heat to 100 degrees celcius.

Answer 1

Yes, your wording indicates that you need help.

You not only have to heat the water to 100 deg C
You have to BOIL IT as well !
so
look up the specific heat of water, call it C
then LOOK UP THE HEAT OF VAPORIZATION of water.

then
heat in = 2 * specifc heat * (100-37)
+
2 * heat of vaporization of 1 kg of water

Answer 2

310800