Here’s the balanced equation for the reaction between nitrogen and hydrogen that produces ammonia (NH3):

N2 + 3H2 → 2NH3 ΔH = -91.8 kJ

If the reaction consumes 21.7 grams of nitrogen, how much energy is absorbed or released by the reaction? Use the periodic table for the atomic weights of the elements.

Type the correct answer in the box. Express the answer to the correct number of significant figures.