Question

Ammonia is formed when nitrogen and hydrogen combine in ratio of14:3by mass.what mass of nitrogen gas would be required to react completely with 9g of hydrogen gas?

Answer 1

Let the mass of nitrogen be x
Given,14/3=x/9
so,x=14*3
      =42 g

Answer 2

mass of nitrogen=y
14/3=y/9
so.....14*3=y
y=42 g