Using Hess's Law, calculate ΔH° for: C(s) + 2H₂(g) → CH₄(g)
Given:
(1) C(s) + O₂(g) → CO₂(g), ΔH° = −393.5 kJ
(2) H₂(g) + ½O₂(g) → H₂O(l), ΔH° = −285.8 kJ
(3) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l), ΔH° = −890.3 kJ
