What is the weight of the residue obtained after heating of 2.76g of silver carbonate? [Ans. 2.32g]

What is the weight of hydrogen gas (in g) obtained from 42 g of CaH_2 by treatment with water ?

What is the volume of 32g of a gas (having molar mass of 64), at STP?

What alkali metal carbonate easily liberates CO_2 on heating ?

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).

What will be obtained : Chloroform is heated with silver powder.

What is the number of molecules in each of 32g O_(2) and 44g CO_(2) ?

50 g of an alloy containing 80% copper and 20% silver is heated up to t_(1)=80^(@)C and then dropped in a calorimeter of water equivalent W = 10 g containing m = 90 g of water at t_(2)=20^(@)C . What will be the final temerature of the mixture ? Specific heat capacity of copper and silver are s_(c)=0.09" cal.g"^(-1).^(@)C^(-1) and s_(s)="0.15 cal.g"^(-1).^(@)C^(-1) respectively.

What will be the pressure exerted by a mixture of 3.2g of methane and 4.4 g of carbon dioxide contained in a 9 dm^(3) flask at 27^(@)C ?

What will be the pressure exerted by a mixture of 3.2g of methane and 4.4. g of carbon dioxide contained in a 9dm^3 flask at 27^@C ?