explain the ways of expressing concentration.
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concertration is the ability of direct one attention in accordance with one will it means control of the attention
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It can be expressed in several ways: molarity (moles of solute per liter of solution); mole fraction, the ratio of the number of moles of solute to the total number of moles of substances present; mass percentage, the ratio of the mass of the solute to the mass of the solution times 100; parts per thousand (ppt), grams
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