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  1. A

    Raw Mark

    is that for 65/70 or 68/70
  2. A

    Raw Mark

    For this year btw, cause it was easier than usual
  3. A

    Raw Mark

    What would a 65/70 align to about? And what about a 68? Thanks guys
  4. A

    Polymer Question?

    why don't you multiply by 6.022x20^23
  5. A

    Polymer Question?

    A sample of PVC has an average molecular weight of 7.2X10^4. What is the average number of monomer units in this sample. I'm not sure what to do. Can someone help? Thanks heaps!
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