An athlete takes 20 breaths per minute at room temperature
CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance
Problem
An athlete takes 20 breaths per minute at room temperature. The air inhaled in each breath is 200 mL which contains 20% oxygen by volume, while exhaled air contains 10% oxygen by volume. Assuming that all the oxygen consumed if used for converting glucose into CO2 and H2O(l), how much glucose will be burnt in the body in one hour and what is the heat produced? (Room temperature = 27∘C and enthalpy of combustion of glucose is −2822.5 kJ mol−1 at 0∘C )