Air at STP has pressure p = 1 atm = 1.013 ×105 Pa, and temperature T = 273 K. Use the ideal gas law to determine the number of molecules in a cubic meter of air.(adsbygoogle = window.adsbygoogle || []).push({});

I have tried many different numbers and cant seem to get the correct answer. I guess I should use the formula

PV = NkT

so

P = 1 atm or 101.3 kPa? i tried both

V = 1 m^3 or 1000 L? also tried both

T = 273 K

k = 8.617385 x 10-5 eV/K?

so (101.3 kPa)(1000 L) = N (8.617385 x 10-5 eV/K)(273 K)

do you see what i am doing wrong?

Thanks

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# Homework Help: Molecules In Air

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