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A certain lever system is only 30% efficient. What could make it more efficient?
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Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?
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Which of the following is not true about the atomic model of substances?
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How is the electron sea model of metallic bonding different from the band theory? how are they the same? give at least one similarity and one difference between the models
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An is a pure substance that can’t be broken down into simpler substances by chemical or physical means
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A certain lever system is only 30% efficient. What could make it more efficient?...
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