After the reaction was complete the solid residue, Chemistry

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After the reaction was complete the solid residue

A 21.0054 g sample of impure magnesium carbonate was heated to complete decomposition according to the equation
MgCO3(s) --> MgO(s) + CO2(g) .

After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of 19.0732 g. Assuming that only the magnesium carbonate had decomposed, how much magnesium carbonate was present in the original sample?

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Chemistry: After the reaction was complete the solid residue

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Chemistry: After the reaction was complete the solid residue

Reference No:- TGS0606612

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