The common name for 3H2O is water, but in this case, it specifically refers to three molecules of water. In chemistry, when we write 3H2O, it indicates that there are three moles of water present.
Water itself is a compound made up of two hydrogen atoms and one oxygen atom, which is represented by the chemical formula H2O. When we have 3H2O, it simply means that we have three times that amount, or three molecules of water.
This notation is often used in chemical equations or during discussions of stoichiometry, where understanding the quantity of substances is essential. So, whether we refer to it as just ‘water’ or ‘three molecules of water,’ the essence remains the same—it is crucial for life and has numerous applications in daily activities and industrial processes.