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States of Matter (4) - CHEMISTRY 139 Chemistry Physical...

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1 CHEMISTRY 139 Chemistry: Physical Principles Gases Liquids and Solids Solutions Chapt.13: 13.1, 13.4 13.6 Unit 2 States of Matter Solutions can be: dilute, concentrated, unsaturated, saturated and supersaturated. most reactions take place in solution Solutions Solute: dissolved substance Solvent: substance present in greatest quantity, dissolving agent. moles of solute B volume of solution (L) Composition of solutions: Percent by mass = Molarity (M) = Molality ( m ) = Mole fraction (X B ) = total moles of solution moles of solute moles of solute mass of solvent (kg) mass of solute mass of solution x 100%
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