Hi. Can someone give me a hint to how to calculate total mass of nitrogen in the atmosphere. I've calculated the mass of all the atmosphere, I got the percent by volume of nitrogen to be 78.03 %. I converted the mass of the atmosphere to Liters. I got the volume of nitrogen to be 3.18e21 L and converted to 3,099 e18 kg. The correct answear is 3,96e18 kg can't see what I doing wrong. To get the Kg of nitrogen I used the partial pressure of N2 in O°C and the gas equation to get the moles of N2. Maybe I'm getting the partial pressure wrong. I did 78.03/100 = 0,7803*1 atm(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: Mass of air

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