A mixture of `CaCO_(3)` and `MgCO_(3)` weighing `1.84 g` on heating left a residue weighing `0.96 g`. Calculate the percentage of each in the mixture.

10 grams of a mixture of CaCO_(3) and MgCO_(3) require equal weight of sulphuric acid for complete reaction. Calculate the percentage weight of MgCO(3) in the mixture.

1.84 g of a mixture of CaCO_(3) and MgCO_(3) was heated to a constant weight. The constant weight of the residue was found to be 0.96g. Calculate the percentage composition of the mixture. (relative atomic masses of Ca and Mg are 40 and 24 respectively).

1.5g of a mixture of CaCO_(3) and MgCO_(3) , on ignition, produces 360mL of CO_(2) at STP. Calculate the percentage composition of the mixture.

3.75 g of a mixture of CaCO_3 and MgCO_3 is dissolved in 1 L of 0.1 M HCl to liberate 0.04 " mol of " CO_2 . Calculate (a). The percentage of each compound in the mixture. (b). The amound of acid used. (c). The amound of acid left after the reaction.