Ascuba diver 200 m underwater experiences a temperature of 15 oc and a pressure of
2 atm if she takes a large breath of oxygen (inhaling 2.0 l) and then swims to the
surface without exhaling, what will be the volume of oxygen in her lungs? the
temperature at the surface is 30 oc and the pressure is 1 atm

The answer to your question is 4.2 l

Explanation:

Data

Temperature 1 = T1 = 15°C = 288ºK

Pressure 1 = P1 = 2 atm

Volume 1 = V1 = 2 l

Temperature 2 = T2 = 30°C = 303ºK

Pressure 2 = P2 = 1 atm

Volume 2 = V2 = ?

Formula

Combined gas law

Solve for V2

Substitution

Simplification

Result

                                     V2 = 4.2l

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.