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Why is the relative atomic mass always changing?

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  1. Dec 17, 2014 #1

    Johannah Wu

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    And why the range of changing is different when we use different atoms as standards?
     
    Johannah Wu, Dec 17, 2014
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  3. Dec 17, 2014 #2

    Bystander

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    Could you restate your question, or give an example of what you mean when you say, "changing?"
     
    Bystander, Dec 17, 2014
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