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I am having trouble w/ this heat absorbing question

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2Na ＋ Cl2 → 2NaCl △H= -821.8 kJ

How many kJ of heat are absorbed when 44.1 g of NaCl is decomposed into Na and Cl2 at constant pressure?

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  1. NaCl molar mass = 35.5+23=58.5

    number of moles 44.1/58.5=0.754mole

    so 0.754*821.8/2=310kJ

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