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A solution is made by dissolving 25.5 grams of glucose (C6H12O6) in .325 kilograms of water. If the molal freezing point constant for water (Kf) is -1.86 °C/m, what is the resulting Δtf of the solution
Calculate the pH of the solutions having the following [H+]: a) 0.57 M pH=? b) 1.84 M pH=? c) 3.7*10^-5 M pH=?
Question- A fossil was analyzed and determined to have a carbon-14 level that is 60% that of living organisms. The half-life of C-14 is 5730 years. How old is the fossil
what is the molarity of an aqueous solution containing 360g of glucose in 2.0L of solution.
Question- What is the pH of a phosphate buffer when [H2PO4-] = [H2PO4^2-] ? I have the pka for HsPO4- is 7.20. The pka for HCH3O2 is 4.74. The Ka for the system is ka2= 6.3e-8. For H3PO4 the first acidic proton has ka1= 7.2e-3
The Shroud of Turin is a piece of linen bearing the image of a man that has for generations been claimed to be the burial cloth of Jesus Christ. If the activity of C-14 in a present-day sample of flax (from which linen is made) is 76 counts/s,..
Given the following activation energies, what is the rate constatnt for a catalyzed and uncatalyzed decomposition of hydrogen peroxide(H2O2). Ea(uncatalyzed) 76kJ/mol, Ea(catalyzed) 19JkJ/mol
A zero-order reaction has a constant rate of 3.40×10?4 M/s . If after 30.0 seconds the concentration has dropped to 8.00×10?2 M , what was the initial concentration
What will be the resultant pressure when the stopcock is opened?
If High purity benzoic acid [C6H5COOH; H(rxn) = -3227 kJ/mol] is a combustion standard for calibrating bomb calorimeters. If an unknown quantity of the benzoic acid is burn up in the calorimeter (heat capacity = 1365 J/C) containing exactly 800 g ..
Calculate Ka for acetic acid in both the molal and molar standard states. Use as many sig figs as your calculations in part b.) warrant.
Using paper chromatography, a student separated a dye spot into three components, A, B, and C. The components traveled 4.2 cm, 5.7 cm, and 8.0 cm,. respectively from their initial position on the strip
Trans-bis(ethylenediamine)dithiocyanatocopper(II) forms three linkage isomers. write each structural formulas and name each isomer.
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