but n=m/mr
m=nxmr
no.of mol of nitrogen gas = ch4
n=1/4
mr of nitrogen = 14
mass=14 x 1/4 what
Your mistake is in thinking no. of mol of nitrogen gas = no.
of mol of CH4. That's not true. Rather, it should be no. of mol of
atoms in x grams of nitrogen gas = no. of mol of atoms
in 4 grams of CH4 gas.
(Ok, logging off now. Will try to check forum tmrw
morning to see if there are any last min qns.)
