A rule of thumb for scuba diving is that the external pressure increases by 1 atmatm for every 10 mm of depth. A diver u

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A rule of thumb for scuba diving is that the external pressure
increases by 1 atmatm for every 10 mm of depth.
A diver using a compressed air tank is planning to descend to a
depth of 25 mm.
Question A
Assuming that the tank contains 20%% oxygen and
80%% nitrogen, what is the partial pressure of oxygen in the
diver's lungs at this depth?
Express your answer to two significant figures and include the
appropriate units.
Question B
Assuming that the tank contains 20%% oxygen and
80%% nitrogen, what is the partial pressure of nitrogen in the
diver's lungs at this depth?
Express your answer to two significant figures and include the
appropriate units.