This document discusses how to calculate the percentage composition of solutions and concentration. It provides the formulas to calculate mass percentage as mass of solute over mass of solution times 100, molarity as moles of solute over liters of solution, and molality as moles of solute over kilograms of solvent. It also covers how to calculate changes in various solution properties including vapor pressure lowering, boiling point elevation, and freezing point depression based on the identity of the solute and solvent.

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% = . 100

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=

5. moles soluto
=
Kg de disolvente
=
+

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≡ ,
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