A Chemist Is Given a White Solid That Is Suspected

question 65

Essay

A chemist is given a white solid that is suspected of being pure cocaine.When 1.22 g of the solid is dissolved in 15.60 g of benzene,the freezing point is lowered by 1.32°C.Calculate the molar mass of the solid.The molal freezing point constant (K_f)for benzene is 5.12°C/m.

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