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Solutions : FreezePtDepression (20 Variations) It takes 6.86 kg of ethylene glycol (antifreeze) to decrease the freezing point of 6.50 kg of water to -25.0oF (-31.7oC). How much sodium chloride (NaCl) would it take to decrease the freezing point of 6.50 kg of water to -25.0oF? (Assuming all the salt will dissolve in that amount of water.)
[#97] The Sweeter Side of DensityMichael Davis and Charles Henry Students determine the density of different sugar solutions and then devise a method for layering them in a graduated cylinder. Dyeing the solutions with food coloring results in a rainbow-colored, heterogeneous mixture. Davis, Michael; Henry, Charles. J. Chem. Educ.2008, 85, 1088A.
Physical Properties |
Solutions / Solvents |
Aqueous Solution Chemistry |
Student-Centered Learning
A Hand-Held Ammonia FountainNicholas C. Thomas and Stephen Faulk A plastic juice bottle, filled with ammonia gas generated by combining aqueous ammonia and sodium hydroxide, provides a convenient demonstration of the ammonia fountain and gas solubility. Thomas, Nicholas C.; Faulk, Stephen. J. Chem. Educ.2008, 85, 1063.
Measuring the Composition of a SolutionEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Solutions / Solvents
Ideal Solutions: Raoult's LawEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
