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When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?
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An isotope undergoes radioactive decay by emitting radiation that has no mass. what other characteristic does the radiation have?
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The solar wind can interact with earth's magnetic field to create powerful electric currents that ca...
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