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A polymeric sample in which30%molecules ...

A polymeric sample in which`30%`molecules have a molecules mass `20,000`,40%,`have `30,000`and the rest `30%`have`60,000`.The`(Mbar(n))`and(Mbar(w))`of this sample was:

A

`36,000,43,333`

B

`43,333,36000`

C

`72,000,86,666`

D

`86,666,72000`

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The correct Answer is:
A
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