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bbowers

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## Homework Statement

Estimate the total mass of carbon (in billion metric tons, GTC) in the pre-industrial atmosphere with 280 ppm CO2.

Total mass of Earth's atmosphere = 5.4x10^18 kg

## Homework Equations

1 GTC = 3.67 GTCO2

1 ppm = 44 AMU/ 26x10^6 AMU

## The Attempt at a Solution

44 AMU/29x10^-6 AMU = 1 ppm CO2 = 1.52x10^-6

(1.52x10^-6)(280) = 4.26x10^-4

4.26x10^4 / 3.67 = 1.16x10^-4