atch the following aqueous solutions with the appropriate letter from the column on the right. fill in the blank 1 A 1. 0.20 m NiSO4 A. Highest boiling point fill in the blank 2 B 2. 0.19 m NH4I B. Second highest boiling point fill in the blank 3 C 3. 0.17 m NH4NO3 C. Third highest boiling point fill in the blank 4 D 4. 0.43 m Urea(nonelectrolyte) D. Lowest boiling point

Highest boiling point - 0.43 m Urea

Second highest boiling point - 0.20 m NiSO4

Third highest boiling point - 0.19 m NH4I

Lowest boiling point - 0.17 m NH4NO3

Explanation:

We know that;

ΔT = kb m i

Where;

ΔT = boiling point elevation

kb = boiling point constant

m = molality of the solution

i = Van't Hoff factor

For NiSO4 , NH4I  and NH4NO3 , the Van't Hoff factor, i = 2

But for Urea, the Van't Hoff factor, i = 1

We also have to consider both the values of the molality and Van't Hoff factor , knowing that a higher molality and a higher Van't Hoff factor leads to a higher ΔT and consequently a higher boiling point.

This facts above account for the arrangement of substances shown in the answer.

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.