Question: how many osmoles are in 1 m mgcl2?
Answer: For example, MgCl2 becomes three particles (Mg++ and 2 Cl-) when dissolved in water. Multiply the number of particles produced from dissolving the solution in water by the molarity to find the osmolarity (osmol). For instance, if your have a 1 mol solution of MgCl2: 1 x 3 = 3 osmol.