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Calculate w (in kJ) when 597 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 459 K:
2Fe2O3(s) + 3C(s) → 4Fe(s) + 3CO2(g)
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How many moles of magnesium ion are present in 5.25g Mg 3 (PO 4 ) 2 ?
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