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Why is it expensive to extract copper from a contaminated land where the percentage of copper is low, using the traditional method?
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This is a mixture that has the same composition throughout.
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Which of the following best describes the formation of plasma?
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Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.
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Why is it expensive to extract copper from a contaminated land where the percentage of copper is low...
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