Lysine, one of the amino acid building blocks found in proteins, contains 49.29% C, 9.65% H, 19.16% N, and 21.89% O by elemental analysis. A solution prepared by dissolving 30.0 mg of lysine in 1.200 g of the organic solvent biphenyl, gives a freezing-point depression of 1.37 °C. What are the molecular mass and formula of lysine? Kf for biphenyl is 8.00 °C.kg/mol.

Q: When 50.5 g of urea (CH,N,0) are dissolved in 1200. g of a certain mystery liquid X. the freezing…

A: Weight of urea=50.5 g  Weight of liquid X=1200g = 1.2 kg (1Kg = 1000 gm)

Q: Calculate the freezing point of a solution made by dissolving 1.00 mole of NaCl in 1000. g of H2O.

A: We will use formula of ∆Tf. ∆Tf=Tf°-Tf

Q: Vitamin D is one of the lipid soluble vitamins. When 1.50 g of vitamin D is dissolved in 20.0 g of…

A: A solution is formed by homogenous mixing of solute and solvent. The properties of solution that are…

Q: 14).  part A: The freezing point of a solution prepared by dissolving 147.3 mg of caffeine in 10.0…

A: Answer:- This question is answered by using the simple concept of calculation of molar mass using…

Q: When 498. mg of a certain molecular compound X are dissolved in 60.0 g of benzene (C,H), the…

A: The properties which depend on the concentration of solute particles rather than the nature are…

Q: Molecular Formula from Elemental Analysis and Molecular Mass Determination An unidentified covalent…

A:

Q: Do you expect the freezing-point depression constant, Kf, to change when you change the solute? When…

A: The properties of the solution that depend on the number of moles of solute are termed as…

Q: At 297 k the vapor pressure of pure 2-butanone (CH3COCH₂CH3) is 0.126 atm and the vapor pressure of…

A: Mole fraction of 2-butanone

Q: A substance suggested as a possible solvent for use in molecular mass determinations by freezing…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Estimate the freezing point of concentrated aqueous HCl, which is usually sold as a 12 M solution.…

A: Given: Concentration of the solution = 12 M. And the freezing point decreases by 1.9 °C for every…

Q: Calculate the freezing point (in ºC) of a solution made by dissolving 4.29 g of ethylene…

A: Given :-  Mass of ethylene glycol = 4.29 g  Mass of water = 28.3 g  Kf for solvent = 1.86 K/m…

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: The elemental analysis of an organic solid extracted from gum arabic (a gummy substance used in…

A: Tf = 1.28oCKf = 8.00oC/mmass of solvent = 32.9 gmass of solid = 0.633 g% by mass of C = 40.0%% by…

Q: When 274. mg of a certain molecular compound X are dissolved in 100g of formamidethe freezing point…

A:

Q: A certain substance X melts at a temperature of 7.4 °C. But if a 350. g sample of X is prepared with…

A: To calculate the molal freezing point depression constant Kƒ of substance X, we first need to…

Q: A 0.520 g sample of an unknown nonelectrolyte compound is dissolved in 4.09 g of lauric acid (Kf =…

A: Solution is made up of two components: solute and solvent. The component which is present in major…

Q: When 4.10 g of a certain molecular compound X are dissolved in 80.0 g of dibenzyl ether…

A:

Q: ((C%H5CH,),0), the freezing point of the solution is measured to be If you need any additional…

A:

Q: The freezing point of 58.53 g of a pure solvent is measured to be 44.17 ºC. When 2.15 g of an…

A: We are given with a data for the depression in freezing point on adding a solute to a pure solvent…

Q: When 168 mg of a certain molecular compound X are dissolved in 25.0 g of cyclohexane, the freezing…

A: Solution -

Q: When 89.1 mg of a certain molecular compound X are dissolved in 90. g of benzonitrile (C,H,CN), the…

A: The freezing point of a solvent is the temperature at which, solvent converted to solid-state from…

Q: A solution of ethanol, C₂H5OH, in water has a concentration of 4.246 mol L-¹. At 20.0 °C its density…

A: Information about the question

Q: 3. (1) Please write the four properties of dilute solutions containing non-volatile solute. (2)…

A: (1)Four properties of dilute solutions containing a non-volatile solute are: a) Lower freezing…

Q: Pheromones

A: We will calculate molecular formula and weight

Q: 2.00 g of an unknown compound is mixed to form a homogeneous solution with 75.00 g of benzene. This…

A: Answer: 216.72 g/mol

Q: At 20.0 °C, the vapor pressure of cyclohexane, a nonpolar hydrocarbon, is 66.9 torr and that of…

A: Given: Vapor pressure of cyclohexane = 66.9 torr Vapor pressure of toluene = 21.1 torr Mole fraction…

Q: When 16.3 g of an organic compound known to be 57.15% C, 4.8% H, and 38.06% O by mass is dissolved…

A: Given, the freezing point of pure solvent (water)(Tf0) = 00C  The freezing point of solution (Tf) =…

Q: Calculate the freezing point of a solution that contains 5 grams of sucrose in 1000.00 grams of…

A:

Q: What is the mole fraction of acetone, C3H6O, in the vapor phase from a solution consisting of a…

A:

Q: Menthol is a crystalline substance with a peppermint taste and odor. When 1.10g of menthol is…

A:

Q: A 1.065 sample of an unknown substance is dissolved in 30g of benzene (Kf = 5.12 and Tf = 5.5ºC);…

A:

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.