Human lungs have evolved to breathe oxygen at a pressure as that in the atmosphere,0.21 atm.If a particular heliox mixture to be carried by a scuba diver is at a pressure of 7.00 atm,what should be the partial pressure due to helium in order to maintain the pressure due to oxygen at 0.21 atm?
A) 0.21 atm
B) 7.00 atm
C) 6.79 atm
D) 7.21 atm
E) none of the above
Correct Answer:
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