The heat absorbed by the water that evaporates from the body is the so called latent vaporization heat of water.
The standard latent vaporization heat of water is 2,264.705 kJ / kg.
So, you just have to divide 125 kJ / 2,264.705 kJ/kg = 0.0552 kg = 55.2 g
Answer: 55.2 g
Isn't always true could be false. You should try this I'm trying to help.
100 cm = 1 m
25.2 cm * 1 m / 100 cm = 0.252 m
