# Question 15 and 16 plss

The reaction is as follows:

2 ZnS(s) + 3 O2(g) $\to$ 2 ZnO + 2 SO2

we see that 2 moles of ZnS gives 2 moles of ZnO and 2 moles of SO2. So,

Number of moles of ZnS =

Mass of ZnO = 81.408 $×$0.0499 = 4.045 g
Mass of SO2 = 64.06 $×$ 0.0499 = 3.19 g.