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chemistry(reacting masses)

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When a 1 g sample of limestone was dissolved in dilute hydrochloric acid completely,0.38 g of carbon dioxide was generated.What was the percentage by mass of calcium carbonate in limestone?(Relative atomic masses : C=12, O=16,Ca=40.1)

  • chemistry(reacting masses) -

    0.38 g CO2 x (molar mass CaCO3/molar mass CO2) = g CaCO3
    %CaCO3 = (mass CaCO3/mass sample)*100 = ?

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