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What mass (in grams) of solid Na2SO4 would need to be added to 250 grams of water to make an ideal solution with a boiling point of 103.6°C? (Kb for water is 0.512°C/m)
A. 333 grams
B. 64.8 grams
C. 83.3 grams
D. 111 grams
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