Chemistry
What is another name for salt?
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Which of these is an element?
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What allotrope of oxygen helps protect the biosphere from solar ultraviolet radiation?
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Which of the following is not a common brominating agent?
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What is the sixth most abundant element on Earth, as well as the most abundant alkali metal?
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Clocks made out of what alkali metal are considered the most accurate of all clocks?
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Which of the following subshells has the highest energy?
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Out of the following list, which is NOT a strong acid?
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