Balance the given chemical equations. Use the lowest whole‑number coefficients.

equation 1: N₂ + O₂ → NO
equation 2: TiCl₄ + H₂O → TiO₂ + HCl
equation 3: CH₄ + O₂ → CO₂ + H₂O
equation 4: C₂H₆ + O₂ → CO₂ + H₂O
equation 5: Fe₂O₃ + C → Fe + CO₂
equation 6: Al(NO₃)₃ + H₂SO₄ → Al₂(SO₄)₃ + HNO₃
equation 7: C₃H₈O + O₂ → CO₂ + H₂O