1 mol of N2 is 28 gms, thus, 2.93mol is 84 gms.
According to the equation-
N (2 + 3H (2) = 2NH(3)
28gms (1mol) of N2 produces 34gms of NH3
so, 84gms of N2 will produce:
28gms of N2----->34gms of NH3
84gms of N2-----> 28/84 = 34 / x
x= (34*84) / 28
Answer: 102gms