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An unknown nonelectrolyte and nonvolatile compound is dissolved in enough pure water to make 348ml of...

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Chemistry

An unknown nonelectrolyte and nonvolatile compound is dissolvedin enough pure water to make 348ml of solution.The vapor pressureabove the solution drops from 198.7mbar to 196.7mbar. When 100g ofthe compound is dissolved at constant temperature.Determine themolar mass of the unknown compound. Assume no change in volumeoccurs upon dissolution.

The answer is 509 g/mol Why?

Answer & Explanation Solved by verified expert
4.3 Ratings (678 Votes)
Let the molar mass of the solution be M gmol we start with 100 g of the compound Therefore moles of compound taken 100 g1 molM g 100M mol Assume the density of water to    See Answer
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