The partial pressure of helium is 0.133 atm in a mixture of helium, oxygen, and methane gases. If the total pressure is 96.4 kPa and the partial pressure of oxygen is 220 mmHg, what is the partial pressure of the methane gas in kPa?



Answer :

Answer:

53.67kpa

Explanation:

Yeah. Honestly the most annoying part is all those pressure units. Lets convert everything to kpa.

total pressure = 96.4 kpa

1 atm = 101.3kpa

0.133 atm*(101.3kpa/1atm) = 13.47kpa = helium pressure

1mmHg = 0.133kpa

220mmHg*0.133kpa = 29.26kpa = Oxygen pressure

Now He + O2 + CH4 = total pressure

CH4 = total - O2 - He

96.4 - 29.26 - 13.47 = 53.67kpa

Hope that answers your question