Calculating Nitrogen Gas Density at 20°C: Solutions and Explanation

[bballboy1191]

Homework Statement

What is the density of nitrogen gas at a temperature of 20 degrees celsius

Homework Equations

p= m/v??
Pv=nRT??
change in volume = (volumetric coefficicient of thermal expansion)(initial volume)(change in temperature)??

The Attempt at a Solution

i tried to use the coefficient of thermal expansion to find the changing volume but gasses don't have values for thermal expansion.

now I am not sure what to do
any help is appreciated

 

[Delphi51]

I remember that an ideal gas at standard pressure and temperature has one mole of molecules in a volume of 22.4 Liters. If you know the molar mass for nitrogen, you should be able to get the density from this. What is "standard" temperature in your class?