Cnolteb1924 Cnolteb1924 26-07-2024 Chemistry Answered Hydrogen gas reacts with oxygen gas to form water vapor:2H₂(g) + O₂(g) → 2H₂O(g)ΔH = -483.5 kJCalculate the heat (in kJ) associated with the reaction of 3.74 g H₂ with excess O₂.