- #1
bcjochim07
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Homework Statement
Estimate the number density of gas molecules in the Earth's atmosphere at sea level.
Homework Equations
The Attempt at a Solution
The question doesn't give me any further information and I am wondering about temperature---should I just say it's at STP? I found in my book that the density of air at STP is 1.3 kg/m^3.
Here's what I did:
PV=NkT
P/kT =N/V
(101300Pa)/(1.38E-23)(273 K)=2.7 * 10^25 molecules/m^3