PART A
A mixture of He, Ar, and Xe has a total pressure of 2.20 atm .
The partial pressure of He is 0.400 atm , and the partial pressure
of Ar is 0.450 atm . What is the partial pressure of Xe? Express
your answer to three significant figures and include the
appropriate units.
PART B
A volume of 18.0 L contains a mixture of 0.250 mole N2 , 0.250
mole O2 , and an unknown quantity of He....