- Convert this following mass percent to moles to find the mole fraction of N
_{2}and Kr. - Then use provided total pressure to determine the partial pressure of each gas by multiplying the mole fraction of gas to the total P of solution:

- Assume that the % mass given were mass in grams, then convert it to moles

MM of N_{2}: N - 14.01 (2) = 28.02 g/mol

MM of Kr: 83.80 g/mol

A gas mixture contains 75.2% nitrogen and 24.8% krypton by mass.

What is the partial pressure of krypton in the mixture if the total pressure is 776 mm Hg ?

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