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Calculate the required mass of an unknown nonelectrolyte (ℳ = 168.0568 g/mol) dissolved in 133.9 g...

Calculate the required mass of an unknown nonelectrolyte (ℳ = 168.0568 g/mol) dissolved in 133.9 g of solvent that gives a solution that boils at 60.35 °C. The boiling point of the pure solvent is 53.89 °C and its Kb value is 4.40 °C/m. Report your answer to TWO places past the decimal.

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