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Which is the layer underground where all empty spaces are filled with a combination of air and water ?
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What is the molecular formula for a compound that is 46.16% carbon, 5.16% hydrogen, and 48.68% fluorine? the molar mass of the compound is 156.12 g/mol
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What is the mass of each element in a 324.8 sample of co2
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What term refers to rows of elements...
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