CHEM103 Lecture Notes - Lecture 7: Molar Attenuation Coefficient, Lead, Chlorate

• School: University of Delaware
• Department: Chemistry and Biochemistry
• Course: CHEM103
• Professor: Graves Ph D, Kimberly Susan

Document Summary

Focus question: water quality: water quality refers to what is found in it, beneficial compounds or harmful compounds, ex. Solution definitions: solute + solvent solution, concentration is generally the amount of solute compared to the amount of solution. Concentration units: amount of solute can be measured as (over solute), mass of solute, volume of solute, moles of solute, compared to amount of solution as, mass of solution, volume of solution. Percent composition as a concentration: percept composition of a solution, mass of solute/mass of solution x 100, volume of solute/volume of solution x 100, ex. 35g nacl / 965g seawater x 100 = 3. 5g. Dilution calculations: moles of solute before dilution = moles of solute after dilution. Ch. 3 aqueous solutions and concentrations: how can we find moles if we know concentration and volume, mstock x vstock = mdilute x vdilute, 12. 0m x ____ = 240. 0l x 0. 10m hcl = 2. 0l.