Balance these equations, write the chemical equations and list the type of reactions:

a) C₈H₁₈ + O₂ → CO₂ + H₂O
b) HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂
c) AlBr₃ + K₂SO₄ → KBr + Al₂(SO₄)₃

Thank you!