Given the reactions (1) and (2) below, determine A,Hº and A,U° for reaction (3) all at 298K. (1) H₂(g)+Cl₂(g) → 2HCl(g) ArH=-184.62 KJ mol-¹ (2) 2H₂(g)+O₂(g) → 2H₂O(g) A,H° -483.64. KJ mol-¹ (3) 4HCI(g)+O₂(g) → 2Cl₂(g)+2H₂O(g)

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