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y g of non-volatile solute of molar mass...

y g of non-volatile solute of molar mass M is dissolved in 250 g benzene. If `K_b` is molal elevation constant, the value of `DeltaT` is given by

A

`(4M)/(k_by)`

B

`(4k_by)/M`

C

`k_by/(4M)`

D

`k_by/M`

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