The density of toluene c7h8 is 0867gml and the density of, Chemistry

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The density of toluene c7h8 is 0867gml and the density of

Problem- The density of toluene (C7H8) is 0.867g/mL, and the density of thiophene (C4H4S) is 1.065 g/mL. A solution is made by dissolving 8.80g of thiophene in 270mL of toluene.

Part A

Calculate the mole fraction of thiophene in the solution.

mole fraction of C4H4S =

molality of C4H4S =

Assuming that the volumes of the solute and solvent are additive, what is the molarity of thiophene in the solution?

Not confident which formulas/units I require to solve something like this

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Chemistry: The density of toluene c7h8 is 0867gml and the density of

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