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How many moles are in 4.25*10^25 atoms of helium?
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Acontrol during an experiment. might change remains constant does not exist does change
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About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
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How many moles are in 4.25*10^25 atoms of helium?...
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