Math! How much CO2 by weight in the atmosphere? | small-m

According to wikipedia (CO2): As of January 2007, the earth's atmospheric CO2 concentration is about 0.0383% by volume (383 ppmv) or 0.0582% by weight. This represents about 2.996×1012 tonnes, and is estimated to be 105 ppm (37.77%) above the pre ...

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