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Solution: Assume that an exhaled breath of air consists of 74.7 % N2, 15.4 % O2, 3.8 % CO2, and 6.1 % water vapor.If the total pressure of the gases is 0.990 atm , calculate the partial pressure of CO2.

Problem

Assume that an exhaled breath of air consists of 74.7 % N2, 15.4 % O2, 3.8 % CO2, and 6.1 % water vapor.

If the total pressure of the gases is 0.990 atm , calculate the partial pressure of CO2.

Solution
  • From the given percentage of CO2, we can use the Dalton's Law of Partial Pressures where:

  • The given percentage provided will tell us the mole fraction of the CO2
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