What is the mass of a sample of neon gas if the volume is 10 L at STP?

1 Answer
Jul 25, 2018

Well "STP"STP specifies 100*kPa100kPa and 273.15*K273.15K...

Explanation:

And so we solve for n_"moles of gas"nmoles of gas in the Ideal Gas equation, and of course we have to fish out an appropriate gas constant...

n=(PV)/(RT)=(100*kPaxx10*L)/(8.314*L*kPa*K^-1*mol^-1xx273.15*K)n=PVRT=100kPa×10L8.314LkPaK1mol1×273.15K

=0.440*mol=0.440mol

And thus a mass of 0.440*molxx20.18*g*mol^-10.440mol×20.18gmol1...approx. 9*g9g...