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

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To calculate the density of nitrogen gas at 20°C, the ideal gas law can be applied using the formula p = m/v, where p is pressure, m is mass, and v is volume. The discussion highlights that gases lack specific thermal expansion coefficients, complicating volume changes with temperature. It is noted that at standard temperature and pressure (STP), one mole of nitrogen occupies 22.4 liters, which can be used to derive density when combined with nitrogen's molar mass. Clarification is sought on what "standard" temperature is defined in the context of the class. Understanding these principles will aid in accurately determining nitrogen gas density.
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Homework Statement



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

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
 
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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?
 

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