Here's a more detailed explanation:

Law of Multiple Proportions

This law states that when two elements combine to form more than one compound, the masses of one element that combine with a fixed mass of the other element are in a simple whole-number ratio.

Example:

* Consider the compounds carbon monoxide (CO) and carbon dioxide (CO₂).

* Both compounds are made up of carbon and oxygen.

* In CO, the mass ratio of carbon to oxygen is 12:16 (approximately).

* In CO₂, the mass ratio of carbon to oxygen is 12:32 (approximately).

* Notice that the mass of oxygen that combines with a fixed mass of carbon (12) in CO₂ is twice the mass of oxygen that combines with the same mass of carbon in CO.

* This ratio of 1:2 is a simple whole-number ratio, as stated by the Law of Multiple Proportions.

Key Points:

* This law helps explain the existence of multiple compounds formed from the same elements.

* It provides evidence for the existence of atoms and the idea that atoms combine in fixed ratios to form molecules.

* This law was proposed by John Dalton as part of his atomic theory.

Let me know if you have any further questions!