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26 September, 22:38

How is a pure substance different from a mixture? A:a pure substance is heterogeneous B:a mixture is made of one substance C:mixtures cannot be separated by physical means D:pure substances cannot be separted by physical means

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  1. 26 September, 23:02
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    I believe it's D:pure substances cannot be separated by physical means

    but I'm not quite sure.
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