Biochemistry 4th Edition by Christopher Mathews,Kensal van Holde, Dean Appling, Spencer Anthony Cahill

Exercise 13

As you exhale each breath, you expel about 0.5 L against a pressure of 1 atm.
(a) If you breathe about 30 times per minute, how much work do you do in this way each day (Neglect any work involved in inhaling.)
(b) Using the G° value for ATP hydrolysis, what is the minimum number of moles of ATP you will utilize per day just in breathing