Can anyone explain to me how is the molar concentration, or should I say the number of moles of water equal to 55.5? I need it with some explanation.
Yes, one liter of water does contain 55.5 moles of water.
You can determine how many moles of water can be found in one liter of water by using water's density and its molar mass.
At room temperature, you can approximate the density of pure water to be equal to 1 g/mL. This means that the mass of a liter of water at room temperature will be
You can determine how many moles this much water would contain by using water's molar mass, which tells you how much 1 mole of water weighs.