State and explain the three laws of chemical combination

Explanation:

Law of conservation of mass ⇒ it states that matter can neither be created or destroyed.In a reaction the energy and the mass remain constant

Law of definite proportion ⇒ it states that samples of compounds will always contain the same proportion of elements by mass.proportion of elements by weight will always remain the same;meaning that percent by weight in elements will remain the same regardless of origin and quantity

Avogadro's law ⇒ it sates that under the same conditions of pressure and temperature, equal volumes of all gases contain the same number of molecules.if there is 500 ml of carbon and oxygen, they will have the same molecules if exposed to the same pressure and teprature level

                   Hope this helps,and if it helps mark as branliest thx

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i belive it is water