Chemistry

What isotope of carbon can be used to figure out how old some objects are or when something died?

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High levels of what chemical may be in trailers provided for people displaced by Hurricane Katrina?
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What element has the highest ionization energy?
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What is a mixture of gasoline and ethanol called?
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How does one find Molarity (M)?
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What is the symbol used on the periodic table for the element Terbium?
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What is the symbol used on the periodic table for the element Scandium?
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What happens to water when it gets close to freezing?
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Who discovered calcium and barium?
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