1.0 pointsEstimate the boiling point elevation of 1.51%by mass CO(NH2)2(aq).The boiling pointconstant of water is 0.51 K·kg/mol.Correct answer: 0.13045◦C.
Version 094 – Homewrok 3 – Fakhreddine – (53605)5◦C, should this solution freeze? Assume thatthe solute is not volatile and does not ionizeand does not associate in the solution. HINT:You can save a LOT of calculation if you thinkcarefully about the problem before you begincalculations.F. Supposeyou wanted to accomplish the same thing withsugar (sucrose, C12H22O11) instead of ethy-lene glycol.How many kilograms of sucrosewould you use? 1 gallon = 3.785 liters.5.4.68×10−3kgExplanation:0131.0 pointsA solution of 0.90 g of an unknown non-electrolyte in 300 mL of water at 27◦C hasan osmotic pressure of 38.4 torr.What isthe molecular weight of this compound? (Ne-glect volume change due to solute,R= 0.0821L·atm/mol·K)
Version 094 – Homewrok 3 – Fakhreddine – (53605)6side of the U-tube shown below. Pure wateris placed in the tube on the other side of thesemipermeable membrane. With the left sideopen to barometric pressure of 1.0 atm and1.5 atm applied to the right side, the twoliquids do not move.1.00 atm1.15 atmBAIn which half of the U-tube is the pure waterlocated?