Student K was asked to determine whether his bar was made of pure palladium.  II) Student S was asked to calculate the grams of ethyl alcohol (d = 0.789 gcm-3) his bar would displace.

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A: Given,

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A:

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A:

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A: Answers are explained below.

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A:

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A: Given : Mean square displacement =1.43 × 0-6 cm2