Laws of chemical combinations
1. Law of conservation of mass: Given by Lavoisier: “In all chemical changes, the total mass of the system remains constant.”i.e., Matter can neither be created nor destroyed. Ex: 2H2 + O2 = 2H2O. Reactants mass = 4 + 32 = 36 g. Products mass = 2 X (2 + 16) = 36 g. Reactants mass Read more about Laws of chemical combinations[…]