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For the reaction Al (s) + 3 HCl (aq) > AlCl3 (s) + 3/2 H2 (g), it was observed? that when 4.00 g of aluminum reacted with excess HCl, exactly 30.0 kJ of heat? were released. The ?Ho for this reaction is??
a) â€“ 91.3 kJ ?
b) â€“ 120 kJ?
c) â€“ 20...
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