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on my homework I was given a problem that says: An aqueous solution which contains calcium...

on my homework I was given a problem that says: An aqueous solution which contains calcium chloride freezes at -1.53 degrees celscius at 1.0 atm. The density of the solution is given as 1.030 g/cubic cm. assuming ideal behavior, find the mass percent and mole fraction of the solute.
can someone please help?
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