Fair test mass of marble chips 5g volume of acid 20ml concentration of acid 1 mole collecting same volume of gas 30ml doing repeats using the same apparatus surface area not exact due to chips being different sizes collecting results 3 times i will try to apply all these fair. Investigating the rate of reaction between marble chips calcium carbonate and hydrochloric acid aim. Marble chips react with dilute hydrochloric acid to produce carbon dioxide gas.
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