A 150 ml sample of water contains 1.2 mg of magnesium ion (Mg+2). What is the concentration of Mg+2 in ppm? If 18 g of NaOH dissolve in enough water to make 200 g of solution. Calculate the concentration in % m/m of NaOH solution NaOH+H2O= 200 g. It is necessary to prepare 500 g of a 15% m/m KOH solution. How many grams of KOH and H2O are needed?

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.