The law of multiple proportions states that equal volumes of different gases contain equal numbers of gas particles.

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The law of multiple proportions states that when two elements form more than one compound, the ratios of the masses of the second element that combine with a fixed mass of the first element will be ratios of small whole numbers. This law is not related to the equal volumes of different gases containing equal numbers of gas particles. That concept is explained by Avogadro's Law.

The Law of Multiple Proportions States That Equal Volumes of Different