The observation that 20g of hydrogen gas always combines with 160g of oxygen gas to form 180g of water, even when there is more
than 160g of oxygen present in the reaction container it illustrates the law of? A. Definite proportions
B. Ideal Gasses
C. Multiple proportions
D. Excess reactants
The Law of Definite proportions states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.
