Question #3c8e3
1 Answer
Oct 2, 2016
By converting to moles then to litres, we get 40L
Explanation:
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
N_2 in 50g
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