How many molecules of ammonia can be produced from 15.0 moles of N2?

N2 + 3 H2 → 2 NH3

The answer to your question is 30 moles of Ammonia

Explanation:

Data

moles of N₂ = 15

Balanced chemical reaction

                 N₂  +  3 H₂  ⇒  2 NH₃

- Process

1.- Use proportions and cross multiplication to solve this problem

                1 mol of Nitrogen 2 moles of ammonia

                15 moles of Nitrogen x

                 x = (15 x 2) / 1

                 x = 30 / 1

                x = 30 moles of Ammonia

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.