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What is use of Raoult’s law?

What is use of Raoult’s law? Correct Answer Calculate the molecular mass of an unknown solute

Raoult’s law states that vapor pressure of a solution is equal to the sum of the vapor pressures of each volatile component if it were pure multiplied by the mole fraction of that component in the solution. Raoult’s law can be used to calculate the molecular mass of an unknown solute.

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