The molecular weight of water is 18 daltons. What is the molarity of 1 liter of pure water? (Hint: Note that 1 liter of pure water has a mass of 1 kg.)

Question

Quizplus · Accepted Answer

The molarity is calculated by dividing the number of moles of solute by the volume of the solution in liters. Since 1 kg of water is 1000 g, and the molecular weight of water is 18 g/mol, there are 1000/18 = 55.6 moles of water in 1 liter. Thus, the molarity is 55.6 M.

The Molecular Weight of Water Is 18 Daltons