If nitrogen, with an oxidation state of -3, undergoes a synthesis reaction with h2, which has an oxidation state +1, what balanced equation shows the product formed?

2nh → n2 + h2
n2 + h2 → n2h2
2nh3 → n2 + 3h2
n2 + 3h2 → 2nh3

N₂ + 3H₂  → 2NH₃

Explanation:

Nitrogen react with hydrogen and form ammonia. The one mole of nitrogen gas react with two moles of hydrogen and form two moles of ammonia.

The oxidation state of nitrogen is -3 while that of hydrogen is +1. That's why two balance the charge one with one nitrogen atom three hydrogen atom react and with two nitrogen atom with a charge of -6 six hydrogen atoms are attached (+6).

Chemical equation:

N₂ + H₂  → 2NH₃

Balanced chemical equation;

N₂ + 3H₂  → 2NH₃

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.