Please give a good simple step by step solution on how to solve the problem.
First you need a chemical reaction producing N_2 gas.
2 NaNO_2 --> 2Na + N_2 + 2 O_2
use the ideal gas law to figure out how many moles of N_2 gas that is.
n = PV/RT
V = 40 mL = 0.040 ...
The solution gives a step by step answer to finding the mass of NaNO2 required to produce a certain amount of N2 under given conditions in a clear manner with explanation throughout.