ind the molar mass of an unknown soluble ionic compound made from an alkaline earth metal and a halogen, if 13.822 g of the compound issolved in 167.112 g of water lowers the vapor pressure of water by 11.049 torr at 83 °C. The vapor pressure of water at this temperature is 403 prr. Give the answer with 3 or more significant figures.

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: A saturated solution of Na2S2O3 at 80 degree celsius was determined to be 47.6% by mass. What is…

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A: Let us first calculate moles of water.moles = mass/molar massgiven, mass of water = 0.340 kg = 340…

Q: A solution was prepared by dissolving some acetamide, CH2CONH2, in 65.0 g of pure water. The boiling…

A: Given: Acetamide as a solute. Pure solvent: water  (T)water = 273 K Weight of solvent = 65 g = 0.065…

Q: Calculate the vapor pressure of a solution of 39.0 g of glycerol (C3H8O3) in 500.0 g of water at…

A: The vapor pressure is the pressure created by vapors on the surface of the liquid. The formula of…

Q: (a) Explain why the Van’t Hoff factor i ≠ 2 for NaCl(aq).(b) Calculate how many grams of NaCl must…

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Q: The normal boiling point of ethanol, CH3CH2OH, is 78.4 °C. When 9.15 g of a soluble nonelectrolyte…

A: Using Raoult's Law; Psolution =7.4 x102 torr Psolvent=760 torr (i.e. 1 atm) 740 torr= xsolvent760…

Q: The vapor pressure of diethyl ether (ether) is 463.6 mm Hg at 25 °C. How many grams of chlorophyll ,…

A: We have to determine the mass of a non-volatile, non-electrolyte solute chlorophyll solute that is…

Q: Calculate the vapor pressure of water at 90. degree C

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Q: Two bulbs, 1.20 L and 3.40 L in volume, connected by a stopcock, are filled, respectively,with argon…

A: We are authorized to solve only one question at a time. Please post rest of the questions…

Q: (a) Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium…

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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: 132.0 g sample of a nonvolatile compound was dissolved in 4.300 mol of cyclohexane (P\ deg = 100.0…

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

Q: If 150 g of ethylene glycol (C 2H 6O 2) is added to 1,000. g of water, what is the freezing point?

A: Kf value of water is 1.86 K Kg mol-1. Depression in freezing point when a non-volatile solute is…

Q: At 740 torr and 20.0 ° C, nitrogen has a solubility in water of 0.018 g L-1. At 620 torr and 20.0°C,…

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Q: What is the concentration (by mass) of the solute in a 25 degree Celsius solution prepared by…

A: Given : Moles of Na3PO4 dissolved = 2.50 X 10-7 mol. And volume of water = 1.000 L = 1000 mL…

Q: Calculate the vapor pressure of a solution

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Q: Calculate the vapor pressure of a solution, in mmHg, that is prepared by dissolving 159 grams of…

A: • relative lowering of vapour pressure is equal to the mole fraction of solute. relative lowering of…

Q: The boiling point of ethanol, CH3CH2OH is 78.50 °C at 1 atmosphere and its Kbp value is 1.22 °C/m. A…

A: As in this given question estrogen is non-volatile solutes. So when we added non-volatile solutes in…

Q: (a) Use the following data to calculate the enthalpy of hydration for calcium chloride and calcium…

A: Answer:Relation between all 3 enthapy values is:

Q: The lattice energy and heat of hydration for lithium hydroxide (LiOH) are -1021 kJ/mol and -1044.5…

A: Answer: Heat gained by solution will be: Q=mC∆T Here: Q=heat gainedm=mass of solutionC=heat capcity…

Q: Calculate the vapor pressure of a solution of 23.5 g of glycerol (C₂H₂O3) in 500.0 g of water at…

A: Given: Amount of glycerol = 23.5 g  Amount of H2O taken = 500.0 g Vapor pressure of H2O at 25°C =…

Q: Identify the intermolecular force involved with the mixing of sodium phosphate and nitrogen…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Arrange the following compounds in order of increasing vapor pressure. NH PH A C

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Q: Calculate the solubility of oxygen in water at the top of Mt. Everest where the atmospheric pressure…

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Q: Consider a 355 mL can of seltzer, which is the same as club soda but contains pure water with…

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

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Q: A sample of an organic compound (a nonelectrolyte) weighing 1.35 g lowered the freezing point of…

A: Given information: Weight of solute is 1.35 g Weigh of solvent is 10.0 g The freezing point of a…

Q: The common laboratory solvent chloroform is often used to purify substances dissolved in it. The…

A: From given We know,the formula for  nonvolalatile and nonelectrolyte solute solution Psolution =…

Q: At 25 degrees Celsius the vapor pressure of pure water is 23.76 mmHg and that of seawater is 22.98…

A: Given that vapor pressure of water is 23.76 mm Hg and that of sea water is 22.98 mm Hg.

Q: The common laboratory solvent chloroform is often used to purify substances dissolved in it. The…

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Q: The boiling point of an alcohol is 77.870 ᵒC. at 1atm. When 13.64 g of an unknown compound was…

A: ∆Tb = Tfinal - Tinitial  = 79.228 - 77.870 =  1.358° C

Q: Calculate the mass % of naphthalene(C10H8) in 50.0g of methanol to obtain a vapor pressure of 118…

A: Given: The solute is naphthalene(C10H8) and the solvent is methanol(CH3OH). The pure vapor pressure…

Q: Calculate the pressure of O2 necessary to generate an aqueous solution that is 4.7 ×10−2 Min O2 at…

A: It is given that:Concentration of aqueous solution = 4.7×10-2 MHenry’s Law constant (KH) = 1.3×10-3…

Q: A solution is made by dissolving 2.5 mg sodium fluoride (NaF) in 5.0 L of water at 20.0 degree…

A: Given : Volume of water = 5.0 L Mass of sodium fluoride i.e NaF dissolved = 2.5 mg = 2.5 X 10-3 g…