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predicts molecular shapes. Answer: The Valence Shell Electron Pair Repulsion (VSEPR) theory states that electron pairs around a central atom repel each other and arrange themselves to minimize repulsion, determining the molecule’s shape. Count the total numbe

_2O \] This equation shows that two molecules of hydrogen react with one molecule of oxygen to produce two molecules of water. The Law of Conservation of Mass A fundamental principle behind reaction equations is the Law of Conservation of Mass, which