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4An investigation into the amount of Zinc Oxide in Calamine solution Planning In this experiment, I plan to find out how much Zinc oxide is present in Calamine solution (a solution that stops itching). I will do this by working out the amount of Zinc Oxide produced by Zinc Carbonate once it has been heated, causing thermal decomposition and the release of carbon dioxide gas. A carbonate is a salt of carbonic acid when carbon dioxide (CO2) dissolves in water. When combustion takes place, CO2 is a product along with another substance; in our case, zinc oxide. Here is the chemical equation: Zinc Carbonate (s) ==> Zinc Oxide (s) + Carbon dioxide (g) ZnCO3 ZnO CO2 With this, you can find out the theoretical yield that you will receive from the calamine lotion. You do this using the element's relative atomic mass. As the equation has already been balanced, you work out how...

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