How many moles of n2 are in a flask with a volume of 250 ml at a pressure of 300kPa and a temp of 300K?

Using the Ideal Gas Law, PV=nRT, the number of moles of N2 in the flask is 0.3 moles.

p (pressure) = 300kPa

V (volume) = 0.250L

n (number of moles) = ?

R (the gas constant) = 8.31441 J K-1 mol-1

T (temperature) = 300K

pV = nRT

(300kPa) (0.250L) = n (8.31) (300K)

n = 0.03 mol

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