Chemistry

Which is more abundant in the earth's crust?

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What actinide was once used to power pacemaker batteries, but has since been replaced?
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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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What is the third most abundant gas in the earth's atmosphere?
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Which of these is a liquid?
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What property is a measurement of how hot or cold something is?
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Which of the following is an abiotic factor in an environment?
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The red color of rubies is caused mainly by the presence of what element?
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What is meant in saying that two liquids are miscible?
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