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The balanced chemical equation for the decomposition of sodium bicarbonate (NaHCO3) is:
2 NaHCO3 → Na2CO3 + H2O + CO2
From the balanced equation, we can see that 2 moles of NaHCO3 decompose to form 1 mole of Na2CO3. Therefore, 1 mole of NaHCO3 would produce 0.5 moles of Na2CO3.