What mass of H20 could be frozen 1. at 0 C, when 145 g of NH3 is vaporized? The heat of fusion of water is 6.01 kJ/mol. The heat of vaporization of NH3 is 17.4 kJ/mol 2. When 1.50 grams of an unknown is dissolved in 10.0 g of benzophenone, the boiling point elevation is 12.0 C. What is the molecular weight of the unknown if Kb for benzophenone is 7.88 C/m?

Q: How many grams of glucose (molar mass = 180.16 g mol1) must be dissolved in 212 gof water to raise…

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Q: The lattice energy of KCI is -690. kJ/mol, and the enthalpy of hydration is -707 kJ/mol. (Recall…

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Q: The vapor pressure of ethanol is 54.68 mm Hg at 25°C. How many grams of estrogen (estradiol), C18H24…

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Q: The vapor pressure of benzene is 73.03 mm Hg at 25°C. How many grams of estrogen (estradiol), C18H24…

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Q: Calculate vapor pressure at 35 C of a solution formed fromdissolving 25 g of sucrose (C12H22O11) in…

A: The objective of the question is to calculate the vapor pressure of a solution at a given…

Q: The freezing point of pure benzene (C₆H₆) is 5.49 °C. The freezing point of a solution made using…

A: Pure benzene (solvent) freezing point = Tp = 5.49 °C Freezing point of Solution = Ts = -13.0 °C Kf…

Q: The freezing point of pure benzene is 5.49 C. The freezing point of a solution made using toluene in…

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Q: How many grams of CH3OH (MM=32.04 g/mol) would need to be added to 200.1 g of water in order to…

A: Molality is calculated.

Q: A group of students were weighing some CaCl2(s) but they forgot to record the mass.  They know that…

A: Given  Volume of solvent ( water ) = 50 ml Density of water = 1 g/ml Freezing point of pure solvent…

Q: The vapor pressure of pure water at 25 °C is 23.8 torr. What is the vapor pressure (torr) of water…

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Q: An aqueous solution is prepared by dissolving 72.0 g glucose (180.18 g/mol) in enough water to make…

A: The mixing of certain non-volatile substances also known as antifreeze tends to lower the solvent's…

Q: The vapor pressure of pure water (molar mass=18.0 g/mole) at 50 °C is 92.5 mm Hg. A solution…

A: The problem at hand involves the determination of the boiling elevation of a solution. This physical…

Q: 8.66g of benzene (C6H6) dissolved in 23.6g of carbon tetrachloride. Calculate the molality and %w/v.…

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Q: What is the freezing point of a solution containing 10.60 g 2,5-dimethylfuran (C6H₂O), a…

A: We have given thatMass of C6H8O = 10.60 gMass of acetic acid = 224.6 g = 0.2246 kgwe have to findA)…

Q: At a particular temperature the solubility of O2 in water is 0.590 g/L at an oxygen pressure of…

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Q: Calculate the mass of urea that should be dissolved in 225 g of water at 35 degrees celsius to…

A: Colligative properties are those properties which depend only on the moles of solute.Addition of a…

Q: How many grams of pyrazine (C4H4N2) would have to be dissolved in 1.50 kg of carbon tetrachloride to…

A: Colligative properties: The colligative properties are those properties of solutions that depend on…

Q: A 132 g sample of a nonvolatile compound was dissolved in 4.30 mol of cyclohexane (P° = 100.0 mmHg).…

A: Given data: The mass of the sample (solute)=132 g. The moles of cyclohexane (solvent) n2=4.30 mol.…

Q: What mass of ethylene glycol (C2H6O2, molar mass = 62.1 g/mol), the main component of antifreeze,…

A: Given -> Molar mass  of ethylene glycol = 62.1 g/mole Volume of water = 8.5 L = 8.5 × 1000 ml =…

Q: The freezing point of water H2O is 0.00°C at 1 atmosphere. A nonvolatile, nonelectrolyte that…

A: Colligative properties are the properties of the solution that depend on the number of moles of…

Q: The ethanol used for medical purposes is called “USP ethanol.” It is an aqueous solution that is 95%…

A: Given:- 95% ethanol density of pure ethanol = 0.789 g mL-1 density of USP ethanol = 0.813 g mL-1.…

Q: The vapor pr is glucose. Calculate the g/mol), are d water = H2C %3D VP(solution)

A: Given that: Vapor pressure of Water = 23.75 mm Hg Mass of Glucose = 6.562 g Molecular weight of…

Q: A solution is prepared by adding 50.0 g of glucose (C,H120, molar mass 180.18 g/mole) into 250.0 g…

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Q: the freezing point and boiling point of a 0.55 m  CH3OH in water. (Kf = 1.8oCkg/mol;  kb= 0.51 oC…

A: Given, Molality = 0.55 m Kf = 1.8°C kg/mol Kb = 0.51°C kg/mol

Q: The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of…

A: Colligative properties are dependent on the number of moles of solute in the solution. There are…

Q: The vapor pressure of ethanol is 54.68 mm Hg at 25°C. How many grams of saccharin, C7H5NO3S, a…

A: Vapor pressure of pure ethanol = 54.68 mm Hg Vapor pressure of solution = 53.52 mm Hg The relative…

Q: What mass of ethylene glycol (C2H6O2), molar mass 62.1 g/mol), the main component of antifreeze,…

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Q: How many grams of ethylene glycol (molar mass 62.07 g/mol) must be added to 1500.0 g of water to…

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Q: is –2.32 °C, then what is the molar mass of the solute (in g/mole)?

A: If the freezing point of an aqueous solution containing 7.162 g of solute dissolved in 72.297 g…

Q: [8] The solubility of N2 in blood at 37°C and a partial pressure of 0.80 atm is 5.6×10-4 mol/L. A…

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Q: 15.00 grams of substance A, a nonvolitile, nonelectrolyte is added to 35.00 grams of substance B.…

A: Given: Mass of A = 15.00 g. A is a non-volatile solute. And mass of B = 35.00 g.

Q: The Henry’s Law constant for N2 in water is 6.41x10^-4 mol/L•atm at 25°C. Calculate the…

A: Henry 's law constant for N2 (kH) = 6.41 × 10-4 mol/(L.atm) Partial pressure of N2 (PN2) = 3.70 atm…

Q: The enthalpy of solution of KCI is 40 kJ/mol. The hydration energies of K* and Cl are -315 kJ/mol…

A: Lattice energy is the amount of energy released when one mole of crystalline ionic compound formed…

Q: Ethanol has a K, of 1.22 °C/m and usually boils at 78.4 °C. What is the boiling point of the…

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Q: What is the freezing point (in degrees Celcius) of 4.50 kg of water if it contains 151.6 g of CaBr2?…

A: Given : Mass of solvent i.e water = 4.50 Kg  Mass of solute i.e CaBr2 = 151.6 g Molar mass of CaBr2…