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The specific heat of a certain substance...

The specific heat of a certain substance is 0.86 `J g^(-1) K^(-1)` . Assuming ideal solution behavior. The energy required (in J) to heat 10 g of 1 molal of its aqueous solution from 300 K is closed to :
[Given molar mass of the substance = 58 g `"mol"^(-1) `, specific heat of water = `4.2 J g^(-1) K^(-1)`]

A

401.7

B

424.7

C

420

D

86

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