Question: In a treatment process, sulfuric acid solution is being treated with a mineral containing ninety-five percent calcium carbonate ( and the other parts are considered

In a treatment process, sulfuric acid solution is being treated with a mineral containing ninety-five percent calcium carbonate ( and the other parts are considered as inerts). The treatment produced a solid sludge (water-free), then being burned in a reactor (combustion process) where only carbon dioxide has been produced. By mass the carbon dioxide represents 10 percent of the sludge. What is the percentage of calcium carbonate in the mineral did not react in the treatment process?

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