Solved: In the average adult male, the residual volume (RV) of the lungs, the volume of

Chapter 5, Problem 5.95

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QUESTION:

In the average adult male, the residual volume (RV) of the lungs, the volume of air remaining after a forced exhalation, is 1200 mL. (a) How many moles of air are present in the RV at 1.0 atm and 37_C? (b) How many molecules of gas are present under these conditions?

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QUESTION:

In the average adult male, the residual volume (RV) of the lungs, the volume of air remaining after a forced exhalation, is 1200 mL. (a) How many moles of air are present in the RV at 1.0 atm and 37_C? (b) How many molecules of gas are present under these conditions?

ANSWER:

Step 1 of 3

The ideal gas law can be given as:

                                            

Here,  is the universal gas constant.

The number of moles of air at 1 atm can be found as:

                                              

Where n denotes the number of moles, P denotes the pressure, V is the volume 1200 mL and T is the temperature,  or 310 K.

                                                       

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