The equation for the reaction of iron and oxygen gas to form rust (Fe2O3) is written as
4Fe(s) + 3O2(g) → 2Fe2O3(s) ΔH = −1.7 × 103 kJ
a. How many kilojoules are released when 2.00 g of Fe reacts?
b. How many grams of rust form when 150 kJ are released?
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