Question

A heliox deep-sea diving mixture delivers an oxygen partial pressure of 0.30 atm when the total pressure is 11.0 atm .

What is the partial pressure of helium in this mixture in atm?

Answer 1

well assuming the mixture is just helium + oxygen

total pressure = oxygen partial pressure + helium partial pressure, you're given total and the oxygen, find the helium partial pressure

Answer 2

Can you please walk me through it?

Answer 3

total pressure = oxygen partial pressure + helium partial pressure

total pressure = 11.0
oxygen partial = 0.3

11.0 = 0.3 + helium

solve for helium

Answer 4

How would you find partial pressure for an element?

Answer 5

I know how to find helium, what if nothing was given?

Answer 6

well in general it would just be

sum of all partial pressures = total, so you would just subtract total - whatever other elements are given

usually they wouldn't just ask you to find the partial pressure of an element without giving any other information like total pressure or mole fraction, etc. of other elements

Answer 7

Thanks