Question

N2(g)+H2(g)-NH3(g)
Calculate the volume of ammonia gas produced when20cm3 of nitrogen gas was reacted with an excess of hydrogen gas

Answer 1

N2 + 3H2 ==> 2NH3
Is that at STP?
20 cc x (1mol/22,400) = mols N2.
Convert mols N2 to mols NH3 using the coefficients in the balanced equation.
Now convert mols NH3 to L. mol x 22.4L/mol = L

Answer 2

6.72lit