The fuel value of hamburger is 3.6kcal/g. If a man eats 1 pound of hamburger for lunch and if none of the energy is stored in his body, estimate the amount of water that would have to be lost in perspiration to keep his body temperature constant. (the heat of vaporization of water is 2.41kJ/g, and 1 lb= 453.6g)

Question

The fuel value of hamburger is 3.6kcal/g.  If a man eats 1 pound of hamburger for lunch and if none of the energy is stored in his body, estimate the amount of water that would have to be lost in perspiration to keep his body temperature constant.  (the heat of vaporization of water is 2.41kJ/g, and 1 lb= 453.6g)

Please help! I have no idea how to do this.

bobpursley · Answer

energyinburger=masswater*Hv solve for mass water.