PE2.1. a. If a breath of air, with a volume of0.5 liter, is drawn into the lungs and comes to therma

PE2.1. a. If a breath of air, with a volume of0.5 liter, is drawn into the lungs and comes to thermal equilibriumwith the body at 37ºC while the pressure remains constant,calculate the increase in enthalpy of the air if the initial airtemperature is 20ºC and the pressure is 1 atm.. (Assume air, whichis mainly N2 and O2, is an ideal diatomic gaswith CV = 5R/2.) b.At a breathing rate of 12 perminute, how much heat is lost in this fashion in 1 day? c.Compare your answer with a typicaldaily intake of 12,000 kJ of food energy. What problems might youforesee in arctic climates, where the air temperature can reach–40ºC and below? Need help with a,b and c . . .

 

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