Chemistry
What is the approximate heat of vaporization of water at its boiling point?
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The Diels-Alder reaction is an example of which class of reactions?
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What symbol appears on the periodic table for Unnilquadium which has the atomic number 104?
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What is the oxidation number on the chromium in a dichromate ion "(Cr2O7)^2-"?
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What metal is known for the chemical compounds it forms, such as emeralds and aquamarines?
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What is the fifth most abundant element in the universe after hydrogen, helium, oxygen and carbon?
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Gold, silver, lead, and copper exhibit the properties of which of the following crystal systems?
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