Verified answer

Formula:

Ideal gas law:

where

P = pressure

V = volume

n = amount of substance

R = ideal gas constant

T = temperature

Solution:

We suppose that the man's stomach have not gained or lost any air. In this case, n is constant. So,

and

In addition, we suppose the temperature does not change. Hence,

For the initial pressure, the pressure at the sea level is equal to the normal atmospheric pressure , that is . Solving for the final volume, we get