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An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.
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Which would freeze at a higher temperature: the great salt lake or lake tahoe? a. lake tahoe would freeze at a higher temperature. b. the great salt lake would freeze at a higher temperature. c. both lakes would freeze at the same temperature.
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Ahelium balloon contains 16.9 l of helium at stp. how many atoms of helium are in the balloon
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How many moles are in 4.64 x 1025 atoms of h2co3?...
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