Question

How many nitrogen are in 34 gram of NH3

Answer 1

This is  a simple stoichiometry question

Molar mass of NH3=17g

in this 17g , 14g if occupied by nitrogen(mass of nitrogen is 14 u)

so if there is 14 g of nitrogen in 17g of NH3

In 34 g of NH3 there will be 14*2=28g

Hope it helps!