Lecture 9_091508 - Exam 1 on Wed remember scientific...

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Exam 1 on Wed: remember scientific calculator and number 2 pencil: Chapters 1-3 Today Finish Chapter 3: Molarity and dilution Review for exam Chapter 4: Stoichiometry Limiting Reagents
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Aqueous Solutions Solution: homogenous mixture of two or more substances Solvent: component present in greater amounts dissolves other substances Aqueous solutions: water is the solvent Solute: substances that dissolve in a solvent Solution: concentration Concentrated: many solute particles present Dilute: few solute particles present Different degrees of solubility
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SOLUTIONS: Concentration Percent: parts per hundred Parts per million (ppm) 1mg/L Parts per billion (ppb) 1 μ g/L ( μ g = microgram =1 x 10 -6 g) Molarity (M) : moles of solute / liters of solution Example: 1.00M solution of sodium chloride (NaCl) Molar mass of NaCl = 58.5g/mol 1 mole NaCl weighs 58.5 grams 1.00 M NaCl solution: 58.5 grams NaCl in 1L water
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This note was uploaded on 08/29/2010 for the course CHM 2045 taught by Professor Brant during the Fall '08 term at University of South Florida.

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Lecture 9_091508 - Exam 1 on Wed remember scientific...

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