What mass of N2 will be needed to produce 31.5 grams of N2O5? 4N2 + 502 --> 2N2O5
a) 158.3 grams
b) 38.64 grams
c) 4.96 grams
d) 16.34 grams

d) 16.34 grams

Explanation:

To calculate the moles :

According to stoichiometry :

As 2 moles of are produced by= 4 moles of

Thus 0.292 moles of are produced by=  = of

Mass of

Thus 16.34 g of will be needed

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be