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What mass of helium is in a 2.00 L balloon at STP
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The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
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Acetylene gas c2h2 undergoes combustion to produce carbon dioxide and water vapor how many grams of water are produced by the same amount of c2h2?
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How might this scientific phenomena be explained? a paper clip floats on water.
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What mass of helium is in a 2.00 L balloon at STP...
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