How many grams of urea [(NH2)2CO)] must be added to 465 g of water to give a solution with a vapor pressure 0.865 mmHg lower than that of pure water at 30°C? (The vapor pressure of water at 30°C is 31.8 mmHg.)

Q: Consider two solutions, one formed by adding 300 gg of glucose (C6H12O6)(C6H12O6) to 1 LL of water…

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Q: What is the vapor pressure of a pure sample of water at 37∘C, if a 0.50Msolution of BaCl2 ​has a…

A: BaCl2 is a non-volatile solute. Its presence in the solution causes the lowering of vapor pressure…

Q: What is the boiling point of a solution consisting of 15.44 g methyl salicylate, C7H6O2, dissolved…

A: Interpretation-  To determine the boiling point of the solution consisting of 15.44 g methyl…

Q: hen 59.9 g of glycine (C₂H5NO₂) are dissolved in 850. g of a certain mystery liquid X, the freezing…

A: Freezing-point depression is the decrease of the freezing point of a solvent on addition of a…

Q: The vapor pressure of water at 25°C is 23.8 torr. An aqueous solution was made by dissolving…

A: Vapour pressure of water(P°) = 23.8 torr  Vapour pressure of solution (P) = 23.3 torr  Mass of water…

Q: Calculate the vapor pressure (in mmHg) of a solution made by dissolving 69.9 g of organic compound A…

A: Given :- the vapor pressure (in mmHg) of a solution made by dissolving 69.9 g of organic compound A…

Q: Which of the following pairs of solutions have roughly the same boiling point  elevation? A) 0.200 m…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: How many grams of urea (a non-electrolyte, MW = 60.0 g/mol) must be added to 450.0 g of water to…

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Q: 1. A solution contains 5.00 g of urea, CO(NH₂)2, a non-volatile compound, dissolved in 0.100 kg of…

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Q: An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 7.00 mg…

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Q: What mass of pure water, in kilograms, is needed to obtain a KCl solution with a boiling point of…

A: The elevation in boiling point of a solvent can be determined by the multiplication of van't Hoff…

Q: Calculate the vapor pressure (in mmHg) of a solution of 15.0 grams of urea (a nonvolatile solute,…

A: mass of urea = 15.0 gmolar mass of urea = 124.16 g/molmass of water = 138 gmolar mass of water =…

Q: What is the freezing point, in °C, of a solution made with 1.15 mol of CHCl₃ in 530.0 g of CCl₄ (Kf…

A: A colligative property is a property that depends on the number number of moles of solute, not on…

Q: a) What is the vapor pressure (mmHg) of a solution of 0.750 g of urea [(NH2)2CO, FW = 60.0 g/mol] in…

A: a) Moles of Solute = mass/molar mass = 0.750/60 = 0.0125 mol    Moles of Solvent = mass/molar mass =…

Q: What is the vapor pressure (mm Hg) of water at 25 Celsius above a solution prepared by dissolving…

A: For ideal solutions, each component's pressure is identical to the pure state pressure and mole…

Q: An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 4.80 mg…

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Q: The liquid used in automobile cooling systems is prepared by dissolving ethylene glycol (HOCH2CH2OH)…

A: To calculate the vapor pressure of the coolant solution, we need to use Raoult's law: P=Xethylene…

Q: The freezing point of pure water is 0.0°C. How many grams of ethylene glycol (C2H6O2) must be mixed…

A: Mass of solvent water = 100.0 g = 0.1 kg Kf for water = 1.86 °C/m = 1.86 °C. kg/mol) Depression in…

Q: What is the molecular formula of the unidentified compound?

A: Tf = Kf*mb 34.4 = 40.0 *mb mb= 0.86 molal     m(solvent)= 12.75 g = 1.275*10^-2 kg   use: number of…

Q: Calculate the vapor pressure for a 35.2% NaCl (m/m)% aqueous solution at 45°C. The vapor pressure of…

A: 35.2% NaCl (m/m) aqueous solution means 35.2 g NaCl present in 64.8 g water. Mass of water, m1 =…

Q: ie vapor pressure a

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Q: Calculate the vapor pressure of a solution made by dissolving S85.7 g of urea (molar mass = 60.06…

A: a) Given: Mass of urea = 85.7 g. Volume of water = 214.5 mL. And temperature = 35 oC

Q: You have an aqueous solution of NaCl that has a freezing point of -5.15°C. What mass (in grams) of…

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Q: 9.) How many grams of sucrose (C12H22O11) must be added to 150 g of water to give a solution with a…

A: To calculate the amount of sucrose required to create a solution with a vapor pressure of 5.00 mmHg…

Q: An unidentified covalent molecular compound contains only carbon, hydrogen, and oxygen. When 6.00 mg…

A: We have to determine the molecular formula of the unknown compound.

Q: The vapor pressure of pure water at 85°C is 434 torr. What is the vapor pressure at 85°C of a…

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Q: Calculate the molality of NaCl in a 500 ml 20% aqueous NaCl solution whose density is 1.148 g/mL at…

A: Given data is: Density = 1.148 g/mL Molar mass of NaCl = 58.44 g/mol Calculation of molality,…

Q: What is the vapor pressure of a solution of 180 g of glucose in 270 g of water at 25°C if the vapor…

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Q: Glycerin (C3H8O3) density is 1.260 g/mL at 25.00 oC.  Calculate the vapor pressure at 25.00 oC of a…

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Q: A 3.40-g sample of a mixture of naphthalene (C₁₀H₈) and pyrene (C₁₆H₁₀) is dissolved in 35.0 g…

A: Assuming mass of naphthalene in the mixture is y. Hence mass of pyrene = mass of mixture - mass of…

Q: The freezing point of a solution prepared by dissolving 126.3 mg of caffeine in 10.0 g of camphor is…

A: A numerical problem based on colligative properties, which is to be accomplished.

Q: What mass of salt (NaCl) should you add to 1.64 L of water in an ice-cream maker to make a solution…

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Q: How many grams of urea [(NH 2 ) 2 CO] must be added to 4.50 * 10 ^ 2 of water to give a solution…

A: Relative lowering of vapor pressure  It is one of the colligative properties that depends on the…

Q: What is the boiling point of an aqueous Ba(OH)₂ solution made to be 1.8 m Ba(OH)₂? (Kb for water is…

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Q: What is the vapor pressure at 20 C of an ideal solution prepared by the addition of 1.16g of urea…

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Q: What is the partial pressure (in mmHg) of a 39.2% by mass a solution of propylene glycol (C3H8O2)…

A: According to Raoult’s law, the partial vapor pressure of any liquid is equal the product of the…

Q: What volume of water, in mL, is needed to dissolve 0.72 mg of hydrogen gas (2.01588 g/mol) when the…

A: Given: Henry's constant = 7.8×10-4 M/atm. Partial pressure = 1.6 atm

Q: What is the vapor pressure of a 45.0% (by mass) solution of glucose, C6H12O6, at 90.0°C, given that…

A: Given  Weight of glucose = 45g  Weight of water =  100-45 = 55 g  Vapour pressure of pure water P01…

Q: Glycerin (C3H8O3) is a nonvolatile nonelectrolyte with a density of 1.26 g/mL at 25 °C. Calculate…

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Q: What is the vapor pressure at 30°C of a solution made by dissolving 44.6 g of glucose, C6H₁2O6, in…

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Q: What is the vapor pressure of a 45.0 % solution of glucose, C6H12O6 (252.12 g/mol), at 90.0°C, given…

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Q: We dissolve 99 g of potassium sulfate in 500 g of water.  What is the boiling point of this…

A: Given  mass of K2SO4      = 99 gram  mass of solvent    = 500 gram  1000 gram   = 1 Kg    500 gram…

Q: The vapor pressure of water at 25°C is 23.8 torr. An aqueous solution was made by dissolving…

A: Here the solvent is water and non-volatile solute is ethylene glycol. Given the vapor pressure of…

Q: s temperature, the vapor pressure of pure water is 233.70 mmHg. (MH20: 18 g/mol, MNaci: 58.5 g/mol)

A: Given,  Mass of Nacl = 23.4 g  Mass of water = 270 g  Molar Mass of NaCl = 18 g/mol Molar mass of…

Q: By how much will the vapor pressure of water decrease if a solution at 40.0°C is produced by…

A: A solution is formed by mixing of solute and solvent that results in an homogenous substance.…

Q: The vapor pressure of water at 25°C is 23.8 torr. An aqueous solution was made by dissolving…

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