Diwali is the five-day festival of lights, celebrated by millions of Hindus, Sikhs and Jains across the world. The festival, which coincides with the Hindu New Year, celebrates new beginnings and the triumph of good over evil and light over darkness.
The law of definite proportions, also known law of definite composition, states that regardless of the amount, a pure compound always contains the same elements in the same proportions by mass.
law of definite proportion. in any chemical compound, the masses of elements are always in the same proportion by mass. law of multiple proportion. when two elements form more than one compound, the masses of one element that combine with the same mass of the other element are in the ratio of a small, whole number.