emergeny!!! please help me?

Question

3)Sorbitol is a sweet substance found in fruits and berries and sometimes used as sugar substitute. An aquesous solution containing 1g of sorbitol in 100g water has a freezing point of -0.102˚ C. Elemental analysis indicates that Sorbitol is 39.56% C, 7.75% H and 52.7% O. What are the molar mass and the molecular formula of Sorbitol? The Ksubf of water is 1.86˚ C/m.

Answer 1

The formula for freezing point depression is

∆T = i*Kf*m, where Kf is the FPD constant, i = 1 for non-ionic solutions and m is the molal concentration (moles per kg of solvent). First find the molal concentration:

m = ∆T/Kf

Since the freezing point of pure water is 0ºC, the ∆T is -0.102ºC; therefore m = -0.102ºC/-1.86ºC/m = 0.05484 molal = 0.05484 mole sorbitol per kg of water.

In 100g there will be 0.1*0.05484 moles of sorbitol, therefore the solution contains 0.00548 moles of sorbitol, which you are told is 1g. From the definition of mole:

MM = g/mole, so the molecular mass is 1/0.00548=182.48g/mole.

The molecular formula is CaHbOc, and the molecular mass is the sum of the masses of the components:

a*MM(C)+b*MM(H)+c*MM(O)

MM(C)=12.0107
MM(H)=1.00794
MM(O)=15.9994

39.56% of the compound is C, MM(C)=12.0107 So 39.56% of 182.48 = a*12.0107 (the number of carbon atoms times the MM of carbon); similarly for H and O. Then

a = 0.3956*182.48/12.0107 = 4
b = 0.0775*182.48/1.00794 = 14
c = 0.527*182.48/15.9994 = 4

Thus the formula is C4H14O4

Answer 2

considering that your dogs is a boy, he in all probability would not like nail polish! you extremely don't have placed it on him and the scent is super solid. He won't die yet he would harm himself using nail polish. i think of he's making an attempt to get it off because of the fact it is embarrassing for a male dogs to be even donning nail polish.