Ascuba tank has a volume of 2000 cm3 . for very deep dives, the tank is filled with 50% (by volume) pure oxygen and 50% pure helium.
a.) how many molecules are there of each type in the tank if it is filled at 25 ∘c to a gauge pressure of 19 atm ?
express your answers using two significant figures. enter your answers numerically separated by a comma.
b.) what is the ratio of the average kinetic energies of the two types of molecule?
c.) what is the ratio of the rms speeds of the two types of molecule?
Answers: 3
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