A sample of a mixture of CaCI2 and NaCI weighing 4.22 g was treated to precipitate all the Ca as `CaCO_3`, which was then heated and quantitatively converted to 0.959 g of CaO. Calculate `CaCI_2%` in the mixture.

A sample of a mixture of CaCl_2 and NaCl weighing 4.22 g was treated to precipitate all the Ca as CaCO_3 which was then heated at quantitatively converted to 0.959 g of CaO. Calculated CaCl_2% 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).

0.56 g of limestone was treated with oxalic acid to give CaC_2O_4 . The precipitate decolorized 45 ml of 0.2 N KMnO_4 in acid medium. Calculate % of CaO in limestone.

A mixture of NaCI and Na_2CO_3 is given. On heating 12 g of the mixture with dil. HCI. 2.241 g of CO_2 is evolved at normal temperature. Calculate the amounts of each in the mixture

A granulated sample of aircraft alloy (Al, Mg, Cu) weighing 8.72g was first reacted with alkali and then with very dilute HCl, which left behind a residue. The residue after boiling with alkali weighed 2.10 g and the acid-insoluble residue weighed 0.69g. what is the composition of the alloy?

Find the mass of CaO obtained by heating 100g of a sample of CaCO_(3) which is 95% pure.

If 340 g of a mixture of N_2 and H_2 in the correct ratio has a 20% yield of NH_3 . The mass produced would be

1g of a mixture containing Na_(2)CO_(3) and NaHCO_(3) in equal amounts is heated until a constant mass is obtained. Find the volume of CO_(2) gas liberated at STP.

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.

When a mixture of NaCl and NaBr is heated with H_(2)SO_(4) , the halogen components are liberated as their hydracids leaving Na_(2)SO_(4) as the residue. In an experiment, the mass of Na_(2)SO_(4) left is equal to the mass of (NaCl+NaBr) taken at the begining of the experiment. calculate the percentages of NaCl and NaBr in the given mixture.