Verified answer

First, balance the equation:

N2 + 3 H2 → 2 NH3

a.)

(10 mol N2) x (2 mol NH3 / 1 mol N2) = 20 mol NH3

b.)

(5 mol H2) x (2 mol NH3 / 3 mol H2) = 3 mol NH3

c.)

(15 mol N2) x (2 mol H2 / 1 mol N2) = 30 mol H2

first balance the equation

N2 + 3 H2 ---> 2NH3

in this reaction , 1 mole of N2 reacts with 3 moles of H2 to give 2 moles of NH3.

a) 10mol N2 = ___ mol NH3

1 moles gives 2 moles of NH3.

1:2

1x10 : 2x10

10:20

so 10 moles will give 20 moles of NH3.

b)5 mol H2 =___ mol NH3

3 moles of H2 gives 2 moles of NH3

3:2 (divide by 3 to get "1" on the left side)

1:2/3 (multiply both side by "5" to get "5" on the left side)

5:(2/3)x5

5:10/3

5 moles of H2 gives "10/3" moles of NH3

c) 15mol N2 = ___ mole H2

1 mole of N2 reacts with 3 moles of H2 (according to reaction)

1:3

1x15:3x15

15:45

15 moles of N2 reacts with 45 moles of H2