Homework Answers
PCO2 = XCO2 × Ptotal
Given that Ptotal = 0.977 atm
XCO2 = 400 ppm
PCO2 = 400 ppm × ( 1 / 10^6 ppm) × 0.977 atm
PCO2 = 390.8 ×10^-6 atm
PCO2 = 3.91×10^-4 atm
Hence correct option is (E) 3.91×10^-4 atm
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1. If, as of March 2017, we had about 407ppm of atmosphere CO2
and we continue to increase the amount of CO2 at the rate of about
2ppm. How many years will it take to reach 450ppm?
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Based on question 2, how many years before we reach 450ppm?
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