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A solution of 29.0 g of a nonvolatile, nondissociating compound in 0.20 kg of benzene boils...

A solution of 29.0 g of a nonvolatile, nondissociating compound in 0.20 kg of benzene boils at 81.3 ºC. Calculate the molecular mass of the unknown.

the answer unit should be in g mol-1

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