Question

state the law of chemical combination?

Answer 1

according to this law any reaction undergoes it mass of reactant must be equal to the mass of product.

Answer 2

there are usually six law of chemical combination
1) law of conservation of mass:-during chemical reaction matter is neither created nor distroy.
2) law of definite proportion:-a given compound, irrespective of its source always contain same elements combined in a fixed ratio
3) law of multiple proportion:-when two element combine to form more then one compound , the masses of one element that combine with a fixed mass of other element bear a same ratio.
4) Gay-lusac law of gaseous volume :-in a chemical reaction involving gases , the volume of the reactant bear a simple ratio with each other and also with the volume of the products formed, provided that all volume are measured at constant temperature and pressure.
5) law of reciprocal proportion :- when two element combine with fixed weight of third element then it is either the same or simple multiple ratio of weight of two element which combine directly with each other
6) Avogadro law:-under similar condition of temperature and pressure equal volume of all gases contain equal no of molecule .