A 6.53-g sample of a mixture of magnesium carbonate and calcium carbonate is
treated with excess hydrochloric acid. The resulting reaction produces \(1.72
\mathrm{~L}\) of carbon dioxide gas at \(28^{\circ} \mathrm{C}\) and 743 torr
pressure. (a) Write balanced chemical equations for the reactions that occur
between hydrochloric acid and each component of the mixture. (b) Calculate the
total number of moles of carbon dioxide that forms from these reactions. (c)
Assuming that the reactions are complete, calculate the percentage by mass of
magnesium carbonate in the mixture.
