The human body generates heat by the metabolism of carbohydrates and other food materials. Metabolism provides energy for all biological activities (e.g., muscle contractions). The metabolic processes generate heat generation. Now let us assume that our friend Joe BlueHen ingests 1 L of ice , which he allows to melt in his mouth before swallowing.
a. How much energy is required to melt the ice and warm the water to the body temperature?
b. If 1 g of the fat when metabolized releases approximately 42 kJ of energy, how much fat will Joe burn by ingesting the water?
c. Suppose that, instead of ice, Joe drank 1 L of water at 0ºC. How would the answers to parts (a) and (b) change?