Chemistry

Which of these can take on either a positive or negative charge, typically being a protein?

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What is the symbol used on the periodic table for the element Lawrencium?
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What is meant in saying that two liquids are miscible?
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Which of these is a chemical form of communication?
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Which of these molecules are not planar?
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What does the "T' represent in t-butyl?
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What actinide was once used to power pacemaker batteries, but has since been replaced?
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What is the final product of the Uranium 238 decay chain?
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What alkali metal is used in batteries and certain medicines?
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