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The solution of 2.5 g of a non-volatile ...

The solution of 2.5 g of a non-volatile substance in 100 g of benzene boiled at a temperature `0.42^(@)C` higher than the b.p. of pure benzene. Calculate mol. Wt. of the substance. (`K_(b)` of benzene is 2.67 K kg `"mole"^(-1)`)

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The correct Answer is:
158.9 g
158.9 g
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