5. How many moles of carbon dioxide (CO2) are produced from 15.6 grams of baking soda (NaHCO3)? (6 points)
3 NaHCO3 + H3C6H507 → 3 H2O + 3 CO2 + NazC6H507

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Remember that rust prevented by placing a sacrificial electrode in electrical contact with the iron. the sacrificial electrode must be composed of a metal that  oxidizes  more easily than iron (that is, it must be below iron in table 18.1).