Consider the reaction between hydrogen and oxygen gases to form water: 2H₂(g)+ O₂(g)→ 2H₂O(l)Which of the following is not conserved in this reaction?

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Quizplus · Accepted Answer

Atoms, moles of atoms, and mass are all conserved in this reaction. The law of conservation of mass states that atoms cannot be created or destroyed in a chemical reaction and the number of atoms of each element on both sides of the equation must be equal. Additionally, the law of definite proportions states that the ratio of moles of each element in the reactants and products must be the same. However, the number of molecules is not conserved in this reaction since two molecules of hydrogen and one molecule of oxygen react to form two molecules of water.

Consider the Reaction Between Hydrogen and Oxygen Gases to Form