Chapter 19, Problem 19.70SP

Interpretation Introduction

Interpretation:

What is the mass change in grams per mole of $N{H}_3$ accompanying the formation of $N{H}_3$ from $H_2$ and $N_2$ ?

$N_2\left(g\right) + 3H_2\left(g\right) \to 2N{H}_3\left(g\right) \Delta H^{\circ }=-92.2 kJ$

Concept Introduction: The change in mass during a chemical reaction or a nuclear reaction can be calculated using Einstein’s equation, given as
ΔE = Δmc2

Where, $\Delta m$ =change in mass
c = 3.00 × 108 m/s