5g of pure MgO (obtained by reaction of metallic magnesium with oxygen) contains 3g of Mg. again 8.5 g of pure MgO (obtained by heating `MgCO_(3)`) contains 5.1g of Mg. show that these results are in accordance with the law of constant proportions.

0.76 gm MgO is obtained from 0.46 gm Mg.Show that these results are in accordance with the law of reciprocal proportion.

3 g of ethane C_(2)H_(6) on complete combustion gave 8.8 g of CO_(2) and 5.4 g of water. Show that the results are in accordance with the law of conservation of mass.

3 g of ethane C_(2)H_(6) on complete combustion gave 8.8 g of CO_(2) and 5.4 g of water. Show that the results are in accordance with the law of conservation of mass.

3 g of ethane C_(2)H_(6) on complete combustion gave 8.8 g of CO_(2) and 5.4 g of water. Show that the results are in accordance with the law of conservation of mass.

In an experiment 5.0 g of CaCO_(3) on heating gave 2.8 g of CaO and 2.2 g of CO_(2) . Show that these results are in accordance to the law of conservation of mass.

0.4 g hydrogen combines with the 3.2 g oxygen to produce water. Hydrogen sulphide is produced by combination of 0.25 g hydrogen and 4.0g sulphur. 1g of sulphur combines with 1 g of oxygen show that the results are in accordance with the law of reciprocal proportion.

Weight of copper oxide obtained by heating 2.16 g of metallic copper with HNO_(3) and subsequent ingnition was 2.70 g In another experient, 1.15 g of copper oxide on reduction yielded 0.92 g of copper. Show that the results illustrance the law of definite proportions.