Answer to Question #182362 in General Chemistry for Daniela(me)

General Chemistry

Question #182362

15. How many moles of air are there in a 2.0 L bottle at 19ºC and 747 mm Hg?

Expert's answer

PV=nRT

R = 8.314 J/K mol

T=19+273=292k

V=2.0L

P=747mm Hg

n= moles =

"Moles = \\frac{747\u00d72}{8.314\u00d7292}=\n0.615 moles"

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