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At 60 C, compound X has a vapor pressure of 96 mmHg, benzene (C6H6)(C6H6) has a...

At 60 C, compound X has a vapor pressure of 96 mmHg, benzene (C6H6)(C6H6) has a vapor pressure of 395 mmHg, and a 50:50 mixture by mass of benzene and X has a vapor pressure of 209 mmHg.

What is the molar mass of X?

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