Question

1. NH3 + NO → N, + H2O : How many grams of water will be produced if 15.0 grams of nitrogen trihydride

Answer 1

Answer:

$\large \boxed{\text{11.9 g}}$

Explanation:

We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:     17.03                             18.02

         4NH₃ + 6NO ⟶ 5N₂ + 3H₂O

m/g:   15.0

(a) Moles of NH₃

$\text{Moles of NH}_{3} = \text{15.0 g NH}_{3}\times \dfrac{\text{1 mol NH}_{3}}{\text{17.03 g NH}_{3}}= \text{0.8808 mol NH}_{3}$

(b) Moles of H₂O

$\text{Moles of H _{2} O} = \text{0.8808 mol NH}_{3} \times \dfrac{\text{3 mol H _{2} O}}{\text{4 mol NH}_{3}} = \text{0.6606 mol H _{2} O}$

(c) Mass of H₂O

$\text{Mass of H _{2} O} =\text{0.6606 mol H _{2} O} \times \dfrac{\text{18.02 g H _{2} O}}{\text{1 mol H _{2} O}} = \textbf{11.9 g H _{2} O}\\\\\text{The reaction will produce \large \boxed{\textbf{11.9 g}} of H _{2} O.}$