Question

Ammonia, NH3, can be made by reacting nitrogen and hydrogen and the equation is N2 + 3H2 --> 2NH3 How many moles of NH3 can be made if 19 moles of H2 react with enough N2? mol

Answer 1

You have a balanced equation that says one mole of
`N_2` plus three moles of
`H_2` react to produce two moles of
`NH_3`. So if 2 moles of hydrogen are required for 3 moles of ammonia, then you can make the simplest of equations to solve this. That is,


`3n_H=2n_A`

Solving for the number of moles of hydrogen then


`n_H=(2)/(3)n_A`

You were given the number of moles of ammonia so plug it in and you are done!

Answer 2

make a proportion
3 H2 - 2 NH3
19H2 - x
x = (19x2)/3= 12,666666