Consider the Following Thermochemical Equation

Multiple Choice

Consider the following thermochemical equation:
N₂(g) + 2O₂(g) → 2NO₂(g) ; ΔH° = 66.2 kJ
From this equation,we may conclude that 66.2 kJ is the quantity of heat that is

A) gained from the surroundings when 1 mol of NO₂ is formed at constant pressure.
B) lost to the surroundings when 1 mol of NO₂ is formed at constant pressure.
C) gained from the surroundings when 2 mol of NO₂ is formed at constant pressure.
D) lost to the surroundings when 2 mol of NO₂ is formed at constant pressure.
E) lost to the surroundings when 1 mol of O₂ is consumed at constant pressure.