Chemistry
What is the half-life of Rubidium-Strontium 87?
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What are substances that control the rates of chemical reactions?
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What is the second most abundant element by mass (about 18.5%) in the human body?
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What symbol appears on the periodic table for the element with the atomic number 100?
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Which of these is a heavy gas used in specialized electric lamps?
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What is the name of a hydrocarbon with two carbons sp^2 hybridized?
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What is the most commonly used material in the manufacturing of semiconductors?
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The study of composition and properties of substances and matter is called?
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What solution contains the same ratio of chemical constituents after it is distilled?
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