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Solution: A mixture of 10.0 g of Ne and 10.0 g of Ar has a total pressure of 1.6 atm. What is the partial pressure of Ne?a. 1.1 atmb. 0.8 atmc. 0.54 atmd. 0.40 atme. 1.3 atm

Problem

A mixture of 10.0 g of Ne and 10.0 g of Ar has a total pressure of 1.6 atm. What is the partial pressure of Ne?

a. 1.1 atm

b. 0.8 atm

c. 0.54 atm

d. 0.40 atm

e. 1.3 atm

Solution

We’re being asked to calculate the partial pressure of Ne in a mixture of Ne and Ar


Recall that the partial pressure of a gas (PGas) in a mixture is given by:



where χGas = mole fraction of the gas and Ptotal = total pressure of the gas mixture


The mole fraction of the gas is then given by:



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