Chemistry

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

More Questions from Chemistry
What symbol appears on the periodic table for Plutonium which has the atomic number 94?
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What was the fifth unearthly element from the days of Aristotle?
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Phosphorus and sulfur are the ingredients in what?
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Because they are so reactive with air and water, what group of elements are generally stored in oil?
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Which element gained notoriety from poisoning the waters around Japan?
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What is the symbol used on the periodic table for the element Aluminum?
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The dumping of most toxic chemicals into the ocean was banned by what treaty?
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What process causes molecules to move into areas that have fewer molecules?
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