14).  part A: The freezing point of a solution prepared by dissolving 147.3 mg of caffeine in 10.0 g of camphor is lower than that of pure camphor (Kf= 39.7°C/m) by 3.01°C. What is the molar mass of caffeine?   part B: Elemental analysis of caffeine yields the following results: 49.49% C, 5.15% H, 28.87% N, and the remainder O. What is the molecular formula of caffeine? List the elements in the order given by the elemental analysis.

Q: A certain liquid X has a normal freezing point of -3.00 °C and a freezing point depression constant…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: When 32.4 g of a certain molecular compound X are dissolved in 65.0 g of benzonitrile (C,H,CN), the…

A: we have to calculate the molar mass of X

Q: Suppose that you add 25.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf…

A:

Q: When 32.7 g of alanine (C3H,NO,) are dissolved in 500. g of a certain mystery liquid X, the freezing…

A:

Q: When 0 279 g of a molecular compound, beazonc acid, was dissolved in 430 g of benzene, the freezing…

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Q: Elemental analysis of phytoene, an intermediate in the biosynthesis of carotenoids, shows that it…

A: Depression in freezing point (dTf) of a solution is a colligative property that is calculated as per…

Q: When 20.4 g of urea (CH₂N₂O) are dissolved in 500. g of a certain mystery liquid X, the freezing…

A: First of all we calculate the Kf of mystery liquid X using urea.For this purpose we use Following…

Q: 13.65 g of an unknown compound decreased the freezing point of 346 g of benzene (Kf= 5.12 ∘C  /m) by…

A: Given:: Mass of unknown = 13.65 g Molar mass = x = ? Kf= 5.12 ℃ m-1 Depression in freezing point ,…

Q: A 0.512 g sample of an unknown nondissociating solute was dissolved in 25.0 g of camphor (Kf =…

A: Molality of the solution is obtained from the equation for freezing point depression. Van’t Hoff…

Q: When 28.2 g of urea (CH4N₂O) are dissolved in 1150. g of a certain mystery liquid X, the freezing…

A: Given,mass of urea ( CH4N2O ) = 28.2 gmass of solvent 'X' = 1150. gchange in freezing point of urea…

Q: Safrole is contained in oil of sassafras and was once used to flavor root beer. An 8.50 g sample of…

A: Given: 8.50 g of safrole was dissolved in 365.8 g diphenyl ether. Kf for diphenyl ether is…

Q: A solution of 0.250 g of naphthalene in 35.00 g of camphor (pure solvent) lowers the freezing point…

A: given information are- weight of the solute = w = 0.250 g weight of the solvent = W = 35 g freezing…

Q: A 3.782−g sample of a mixture of cyclohexane (C6H12) and naphthalene (C10H8) is dissolved in 57.30 g…

A: Given:Mass of the sample = 3.782 gMass of Benzene = 57.30 gFreezing point of the solution = 1.90°CWe…

Q: When 126. g of glycine (C₂H₂NO₂) are dissolved in 1450. g of a certain mystery liquid X, the…

A: In this question, we have to find out the van't hoff factor for iron (III) chloride in X The…

Q: The freezing point of a solution prepared by dissolving 125 mg of caffeine in 10.0g of camphor is…

A:

Q: When 397.g of benzamide C7H7NO are dissolved in 1400.g of a certain mystery liquid X, the freezing…

A: First of all we calculate the Kf of mystery liquid X using benzamide. For this purpose we use…

Q: The vapor pressure of chloroform is 173.11 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that…

A: Dissolving a non-volatile, nonelectrolyte in a solvent results in the lowering of the vapor…

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A: Colligative properties are the properties which depend on the number of atoms or molecules or ions…

Q: When 258. g of alanine (C,H,NO,) are dissolved in 850. g of a certain mystery liquid X, the freezing…

A: Recall the following relation for depression of freezing point of a solution…

Q: When 225. g of alanine (C,H,NO₂) a are dissolved in 1100. g of a certain mystery liquid X, the…

A: Answer: When a non-volatile solute is dissolved in a solvent then its freezing point decreases which…

Q: When 73.6 g of glycine C2H5NO2 are dissolved in 1250. g of a certain mystery liquid X, the freezing…

A: Answer: Depression in freezing point of a solution containing a non-volatile solute is:…

Q: 4. To make a solution, 40 g of a nonelectrolyte is dissolved into 300 g of water. The freezing point…

A: Since you have posted multiple question, we will solve only first question for you. To get remaining…

Q: Calculate the vapor pressure of a solution containing 28.5 g of glycerin (C3H8O3) in 125 mL of water…

A:

Q: Calculate the van't Hoff factor for iron(III) chloride

A: Since, nitrobenzene C2H5NO2 is non electrolyte it will be having vantoff factor 1  Now  Since mass…

Q: 3) A student weighed 1.75 g of an unknown molecular compound and dissolved it in 15 ml of water. The…

A:

Q: A compound containing only boron, nitrogen, and hydrogen was found to be 40.3% B, 52.2% N, and 7.5%…

A: NOTE : the constant given 5.12 °C m¯1 is Kf of benzene and not Kb Since the depression in freezing…

Q: Suppose that you add 22.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf…

A:

Q: A sample of 4.4 g of toluene, C7H8, is dissolved in 60.00 g of camphor. What is the freezing point…

A: Information about the question

Q: 19.45 g of an unknown compound decreased the freezing point of 303 g of benzene (Kf= 5.12 ∘C  /m) by…

A: We use the depression in freezing point equation.

Q: Part 1: A solution of 5.83 g of anhydrous aluminum chloride (AlCl3) in 55.96 g of water freezes at…

A: The molar mass of aluminum chloride is calculated as

Q: What is the molar mass of toluene if 0.85 g of toluene decreases the freezing point of 100. g of…

A: When a solute is dissolved in the water, the vapor pressure of the solution is lower than the pure…

Q: Benzene is a common industrial solvent (molar mass: 78.11 g/mol). Its normal freezing point is 5.50…

A:

Q: 6. Ethylene glycol [CH₂(OH)CH₂(OH)] is a common automobile antifreeze. It is water soluble and…

A: 6. Given,Mass of ethylene glycol = 268 gMass of water = 1015 gb.p of ethylene glycol = 197…

Q: Calculate the vapor pressure of a solution containing 24.5 g of glycerin (C3H8O3) in 135 mL of water…

A:

Q: Suppose that you add 22.6 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf…

A: Given mass of unknown molecular compound ( solute) = 22.6 g mass of benzene (solvent) = 0.250 kg =…

Q: 1.613 g sample of an unknown nonionizing molecular compound is added to 250.0 g of benzene (C6H6, MW…

A: The depression in freezing point of Benzene, Tf =T0-Tf =  0.17 oCFor benzene, Kf = 1.86 oC.m-1 Mass…

Q: Determine the freezing point depression of a solution that contains 30.7 g glycerin (C 3H 8O 3,…

A: Depression at the Freezing Point: A solution's freezing point is lower than that of the pure…

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.