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what mass in grams of a molecular substance (mole weight=50.0g/mol) must be added to 500g of water to produce a solution that boils at 101.56(degrees)C?

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delta T = Kb*m
solve for m

m = moles/kg solvent
solve for moles.

moles = grams/molar mass.
solve for grams.

Post your work if you get stuck.

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