An object weight, 30 g in air and 28 g in water. Calculate its volume.

0.495 g of an organic compound on combustion gave 0.99 g of CO_(2) and 0.405 g of water. Calculate the percentages of carbon and hydrogen in the compound.

0.45 g of an organic compound when analysed by combustion gave 1.10 g carbon dioxide and 0.3 g water . Calculate the percentage of carbon and hydrogen in it .

0.30 g of a substance gives 0.88 g of carbon dioxide and 0.54 g water. Calculate the percentage of carbon and hydrogen in it.

A body weighs 100gxxgand40gxxg in air and water respectively. Calculate the weight of the body when immersed in a liquid of specific gravity 0.8.

The weight of a body in air is 100 g and its weight in water is 40 g. Find the volume of the body.

The mass and volume of an alloy made of copper and lead are 320 g and 30cm^(3) respectively. Calculate the volumes of copper and lead present in it. The specific gravities of copper and lead are 8.89 and 11.37 respectively.

0.12 g of an organic compound gave on combustion 0.18 g of water and 0.11 g of CO_(2) . Calculate the percentage of C and H in the organic compound.