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Tag Archives: Chemistry

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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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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Endpoint of a Titration

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Which of the following is NOT needed to calculate the endpoint of a titration?

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The Gas Law

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The following statement is a description of which Gas Law? “As a gas is heated under constant pressure its volume will increase in proportion to the change in temperature.”

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