User talk:Emmanuelsoligbo

LAWS OF CHEMICAL COMBINATION.

law of conservation of mass:In ordinary chemical reaction matter cannot be destoyed or created e.g AgNO3+KCl=AgCl+NO3.No mass or matter was created element on the right is equal to element on the left and the molar mass is thesame.

law of definite proportion:In all pure sample of chemical compound no matter when there are created has the number mass(mass number) all water has the chemical formula H2O. And all pure water contain 11% of hydrogen and 89% of oxygen.

Law of multiple proportion:If two element A and B combine to form more than one compound the various masses of A which combine with a fixed mass of B are in a simple whole number ratio. If iron and oxygen combine to form oxide the ratio of the iron is 2:3 e.g feo or fe2o3 this law is valid when a transition element combine with another element e.g cuo and cu2o the simple ratio of copper is 1:2.Emmanuelsoligbo (talk) 22:39, 13 March 2011 (UTC)