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What’a the structure of 4-ethyl-2,2-dimethylheptane?
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In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?
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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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What’a the structure of 4-ethyl-2,2-dimethylheptane?...
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