By converting to moles then to litres, we get 40L
Recall that the atomic mass of an element corresponds to its molar mass in grams. For nitrogen (14 AMU), 1 mole = 14g. Now since it's the nitrogen molecule, the molar mass would be 28g (2 nitrogen atoms per molecule).
- Calculate the moles of
We divide the mass by the molar mass to get moles
#(50g)/(28gmol^-1)#= 1.78571... mol
- Now using the molar volume of a gas at STP (which is
#(22.71 L)/(mol)#), we can convert the moles of nitrogen into the volume of nitrogen.
#1.78571... mol#x #(22.71 L)/(mol) = 40.55... L#
It seems like your answer has been rounded down to 40L