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In a self-contained breathing apparatus, potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen. Identify the limiting reactant and determine the amount of oxygen gas, in moles, that can be produced from 250 g of KO2 and 450 g of CO2.
4KO2(s) + 2CO2(g) 2K2CO3(s) + 3O2(g)
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