3 Chemistry questions I have no idea how to solve?

Posted on 2015-12-09 06:51:00 in Chemistry by TAYLOR KRITCH

They're dealing with freezing & boiling point and elevation/depression, any help would be appreciated :)

1. A solution contains 99 g of sucrose (C12H22O11), a nonelectrolyte, dissolved in 873 g of water. What is the boiling-point elevation?
Answer in units of ?C.

2. Find the normal freezing point of 0.45 m C12H22O11(aq). The freezing point constant of water is 1.86 K · kg/mol.
Answer in units of ?C.

3. What is the expected freezing point of a so- lution containing 173 g of NaCl dissolved in 450. g of water?
Answer in units of ?C.

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