Chemistry
What is the oxidation number on the chromium in a dichromate ion "(Cr2O7)^2-"?
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In an ethyne molecule, what is the hybridization of each of the carbons?
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Which of these chemicals is often used to reduce phosphates in water?
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What is the symbol used on the periodic table for the element Lawrencium?
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The most common commercial use of magnesium metal is as an alloying agent with what other element?
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What is used in manufacturing matches, fertilizers and pesticides, and in vulcanization of rubber?
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