Question

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Answer 1

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When we heat blue coloured question of $CuSO_4$ then dehydrate the copper sulphate and make it white in colour.

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Answer 2

HERE IS YOUR ANSWER


MEAN = Sum of observations ÷ Number of observations
= 7 + 14 + 19 + 25 + 20 + 10 + 5 ÷ 7
= 100 ÷ 7
= 14.285 or 14.29



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