Chemistry
What is the half-life of Potassium 40 as it decays to Argon?
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What is the second most abundant element by mass (about 18.5%) in the human body?
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In a lead storage battery, what strong acid is consumed in a reaction which produces the voltage?
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Ethyl pentanoate would be classified as belonging to which derivative group?
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Approximately how many chemicals are in a cup of coffee?
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What is the symbol used on the periodic table for the element Boron?
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What is a chemical process by which the hair is permanently straightened?
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