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Chemistry, 22.06.2019 03:50
Express the following number in scientific notation. 0.026890 =
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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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Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid
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Chemistry, 23.06.2019 10:30
Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol
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