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Unformatted text preview: The examples of the observable changes that can be used are: (i) mass of reactant used up (ii) mass of product produced (iii) total volume of gas released (iv) the formation of precipitate REACTION BETWEEN CALCIUM CARBONATE WITH HYDROCHLORIC ACID + + + + + Total volume Of gas/cm 3 Time taken/s 30 60 90 120 150 180 10 20 30 40 50 60...
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