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Achieving Configuration


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When metallic substances lose electrons, they are trying to achieve the electron configuration of what?

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Buffer Buffoon


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A student creates a 1M citrate (C3H5O(COO)33-) buffer solution at pH 5.0. He then dilutes the solution to 200 mM, and adds it to his experiment. What is the pH of the 200 mM buffer solution?

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HNMR Identification

In proton NMR spectroscopy, which compounds or functional groups show a characteristic peak in the range 9-10 ppm?

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Reagents & Transformations


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Which reagents would carry out the following transformation?

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Hexan-1-ol to Hexanal


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Which reagent would you choose to convert hexan-1-ol to hexanal?

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The pH Value Is Right


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Which set of 1 Molar solutions has the correct pH values?

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Mass of the Gas


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The density of an unknown gas under STP conditions is 3.17 g.L-1. What is the molecular mass of the gas?

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Recrystallization and You


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Which statement below about recrystallization is NOT correct?

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Phase Changes


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Which opposite Phase Changes occur at the same temperature for a pure substance?

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Liters of HCl


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How many liters of 0.3M HCl can be made from a 2L stock solution of 1.5M HCl?

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