When of alanine are dissolved in of a certain mystery liquid , the freezing point of the solution is lower than the freezing point of pure . on the other hand, when of iron(iii) nitrate are dissolved in the same mass of , the freezing point of the solution is lower than the freezing point of pure . calculate the van't hoff factor for iron(iii) nitrate in . be sure your answer has a unit symbol, if necessary, and round your answer to significant digits.

i = 3,5

Explanation:

There are missing the following values:

132 g Alanine

1150g of X

4,4°C the first freezing point dercreasing

132g of Iron(III) nitrate

5,6°C the second freezing point decreasing.

The freezing point depression is a colligative property that describes the decrease of the freezing point of a solvent on the addition of a non-volatile solute.

The formula is:

ΔT = i kf mb

Where ΔT is freezing point decreasing, i is Van't Hoff factor, kf, is cryoscopic constant and mb is molality of solution.

For alanine Van't Hoff factor is 1 (Ratio between particles in dissolution and before dissolution), molality is:

132g×(1mol/89,09g) = 1,48mol / 1,150kg = 1,29 mol/kg

Replacing:

4,4K = 1 kf 1,29mol/kg

kf = 3,41 K·kg/mol

Now, for Iron(III) nitrate molality is:

132g×(1mol/241,86g) = 0,546mol / 1,150kg = 0,475 mol/kg

Replacing:

5,6K = i×3,41 K·kg/mol×0,475 mol/kg

i = 3,5

I hope it helps!

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answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).