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boiling point elevation When the normal boiling point of a solvent is raised by the presence of a solute. Can be found using the equation ΔTb = i · Kb · msolute, where i is the van ‘t […]

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Colloids are like solutions that never quite made it to the finish line. They are similar to solutions in that their particles are evenly distributed within each other, but their difference resides in the size of their particles. […]

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Colligative properties are properties which depend only on the number of particles of solute in a solution, and not on the identity of the solute. They apply only to solutions and are useful for determining many of their […]

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Solutions are mixtures in a single phase. Universally, they are homogenous and are composed of a solute and a solvent, but can be liquid-liquid, solid-liquid, gaseous-gaseous, solid-solid, etc. When you think of “solutions,” you probably think of solid-liquid […]

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Learn chemistry while enjoying the interpretation. Please be patient while video loads (11.8 MB). Check gray status bar on bottom of video. Then, press play icon. Please be patient while video loads (18.0 MB). Check gray status bar […]

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Zumdahl, Steven, and Susan A. Zumdahl. Chemistry : Text. Boston: Houghton Mifflin College Division, 2006. Jespersen, Neil D. Barron’s AP Chemistry 4th Edition. Hauppauge: Barron’s Educational Series, Inc., 2007. “Colligative Properties.” Chemistry Explained. 2008. 1 Jun 2009 . […]

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A. Calculate the vapor pressure of a solution composed of 320 grams of acetone (C3H6O) and 205 grams of isopropanol (C3H7OH) at 39.5°C. The vapor pressures of acetone and isopropanol are 0.526 atm and torr, respectively. B. Calculate […]

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Osmotic pressure is the pressure generated by osmosis through a semi-permeable membrane, or a barrier that only allows certain substances to pass through. The diagram above depicts the generation of osmotic pressure through osmosis. Water tends to diffuse […]

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Hey kids, welcome to Galen Lew the Science Dude’s website! Now that our APs are over, we here at Team Lew Labs are chillin’ and watching old Bill Nye episodes on Youtube. But we know that your AP […]

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The video above shows our group’s attempt to make hard candy using the principles of colligative properties. The dominating concept in this experiment is boiling point elevation. The excessive amounts of glucose added to the mixture (in the […]
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