The amount of the energy in kilocalories that should be expended by a person should not be less than the amount of kcal present in the food that is eaten. In the problem given above, George should also be able to expend 750 kcal in order to process the food.
The density of gold is 19.3 g/cm the density of iron pyrite is 5.0 g/cm if a nugget of iron pyrite and a nugget of gold each have a mass of 50 g, what can you conclude about the volume of each nugget