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: The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220. (a)  What is…

A: As per our guidelines, we can solve only one question at a time. Please post other questions as next…

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A: Given, mass of unknown molecular compound=24.3gm mass of benzene=0.250 Kg Kf of Benzene=5.12°C/m…

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

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A:

Q: An aqueous solution containing 36.8 g of an unknown molecular (non-electrolyte) compound in 143.2 g…

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A:

Q: Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated…

A: The molality of the solution is calculated as, The molality of the solution is

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

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A:

Q: What is the mole fraction, X, of solute and the molality, m (or b), for an aqueous solution that is…

A: Calculation of molality and mole fraction of solute using percentage by mass of solute :

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A:

Q: A solution consisting of 0.278 mol of methylbenzene, C6H5CH3, in 244 g of nitrobenzene, C6H5NO2,…

A:

Q: Referring to table 13.3, calculate the freezing point of a solution containg 0.600kg of CHCl3 and…

A:

Q: 9) Adding 1g of benzene, C,H6, to 70g cyclohexane, C,H12, lowers the freezing point of the…

A: Given:   Mass of benzene = 1 gm  Mass of cyclohexane = 70 gm  Depression in freezing point (∆Tf) =…

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A:

Q: Adding 1g of benzene, C,H6, to 70g cyclohexane, C,H12, lowers the freezing point of the cyclohexane…

A:

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A: Weight of benzoic acid = 0.253 gWeight of cyclohexanol = 12.45g = 0.01245 kgLowering in temperature…

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A:

Q: Adding 1g of benzene, C,H6, to 70g cyclohexane, C,H12, lowers the freezing point of the cyclohexane…

A:

Q: 9) Adding Ig of benzene, CaHs, to 70g cyclohexane, CaH12, lowers the freezing point of the…

A: Given, mass of benezene added = 1g mass of cyclohexane = 70 g Change in temperature =

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A: Introduction The lowering in freezing point can be derived by applying the expression shown below.…

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A: The ionization of sodium phosphate is:

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A: Since it is not given whether 2.33 is concentration or mass or moles. Hence I'm assuming it to be…

Q: Camphor is a white solid that melts at 179.50°C. It has been used to determine the molecular weights…

A: given mass of unknown compound (solute) = 1.08 g Kf  = 39.7°C/m Mass of solvent = 73.6 g = 73.6×10-3…

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Q: Ammonium carbonate is a strong electrolyte and it disocciate into two NH4+ and one CO32- . If the…

A:

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

A: Given  P⁰1 = 66.9 torr P⁰2= 21.1 torr

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Q: A solution consisting of 0.240 mol of methylbenzene, C6H5CH3, in 252 g of nitrobenzene, C6H5NO2,…

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Q: if

A:

Q: What mass of naphthalene must be dissolved in 2.20 ×102 g of benzene to give a solution with a…

A: The required relationship is given below.

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A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions…

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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.