The mole fraction of ethanol in water is 0.3 calculate the molality os solution and the mass percent of ethanol

Q: An aqueous solution is 0.8624 molal in sodium thiosulfate. It has a freezing point of -3.064 °C.…

A: Freezing point is a colligative property meaning it depends upon the amount of solute or ions…

Q: A solution is prepared by dissolving 17.2 g of ethylene glycol (C2H6O2) in 0.500 kg of water. The…

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Q: Determine the freezing point depression of the solution. Calculate the molality of the solution.…

A: Mass of sucrose = 138.50 g Mass of water = 250 g = 0.250 kg Freezing point of solution = -3.00oC Kf…

Q: The vapor pressure of a pure volatile liquid is 48.2 tor. If NaCl(s) is dissolved into this liquid,…

A: The vapor pressure of a pure volatile liquid is 48.2 torr. If NaCl (s) is dissolved into this…

Q: A solution is prepared by dissolving 825mg of Disodium phosphate (Na2HPO4) with a density of 1.7…

A: Mass of disodium phosphate = 825 mg = 0.825 g  Volume = 450 mL = 450 cm3 (1mL = 1cm3)  Density = 1.7…

Q: An aqueous sodium acetate, NaC,H,O, , solution is made by dissolving 0.345 mol NaC,H,0, in 0.550 kg…

A: Given: Moles of NaC2H3O2 i.e. solute = 0.345 mol. And mass of water i.e. solvent = 0.550 Kg.

Q: A solution contains 3.85 g of a nonvolatile pure hydrocarbon in 95 g acetone. The boiling points of…

A: We have to calculate the molar mass of hydrocarbon.

Q: Hydrogen peroxide is a powerful oxidizing agent that is used in concentrated solution in rocket…

A: The concentration of the hydrogen peroxide as a percentage by mass = 30% (w/w) This means that, mass…

Q: A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor…

A: Given information is as follows; Vapor pressure of pure pentane = 425 torr Vapor pressure of pure…

Q: An aqueous solution contains 167 g CuSO4 in 820 mL of solution. The density of the solution is 1.195…

A: Hello. Since the question contains multiple sub-parts, the first three sub-parts shall be solved…

Q: Calculate the molarity and the molality of an NH3 solution made up of 30.0 g of NH3 in 70.0 g of…

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Q: A solution is prepared by mixing 25 mL pentane (C5H12, d = 0.63 g/cm3) with 61 mL hexane ( C6H14 d =…

A: Since the volume of pentane is 25 mL and hexane is 61 mL  Hence volume of solution = 25 + 61 = 86 mL…

Q: Calculate the molality of a sulfuric acid solution containing 24.4 g of sulfuric acid in 198 g of…

A: Generally, solution is made up of solute and solvent. The which is present in large amount is known…

Q: A mixture is made by mixing equal volumes of corn syrup (d=1.4 g/mL, C6H14O7) and water (d=1.0 g/mL)…

A: Molality = number of moles of solute/Mass of solvent in Kg

Q: A nonvolatile solute is dissolved in benzene so that it has a mole fraction of 0.287. What is the…

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Q: A solution is made containing 14.6 g of CH3OH in 184 g of H2O. Calculate (a) the mole fraction of…

A: The moles of a substance is equal to the ratio of the mass of the substance to the molar mass of the…

Q: A student added 10 g (0.25 mol) of sodium hydroxide to 40 cm3 of water to make a concentrated…

A: The enthalpy of solution is the amount of heat evolved or absorbed by the solution when the solute…

Q: A solution is prepared by mixing 1.0 grams of benzene (CsHs) in 100 g of water to create a solution…

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Q: The percent by mass of ethanol (MM = 46.07 g/mol) in an aqueous solution is 23.7%. What is the…

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Q: Calculate the molality of a solution that contains 1.43 g carvone in 15.2 mL of ethanol (density…

A: Molar mass of carvone is 150.22 g/mol.Number of moles of carvone can be determined as follows,

Q: A solution is prepared by dissolving 52.3 g cesium chloride in 60.0 g water. The volume of the…

A: Given that : Mass of cesium chloride = 52.3 g Mass of water = 60.0 g = 0.060 kg Volume of the…

Q: A solution is prepared by dissolving 20.5g of LiF in 340.00g water. a. What is the concentration of…

A: a) Given, Mass of LiF = 20.5 g Mass of water = 340.00 g Concentration of the solution in (% by mass)…

Q: an aqueous solution of concentrated nitric acid is 70.0% by mass. what is the molality of this…

A: Molality is a property of a solution and is defined as the number of moles of solute per kilogram of…

Q: number of moles of the solution mole fraction of the solute What is its -mole fraction of the…

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Q: 45.5 grams of urea (NH2CONH2) was dissolved in water to produce 495.5 grams of solution. Calculate…

A: we ave given that mass of urea = 45.5  grams molar mass of urea = 60.06g/mole if we add 45.5gram of…

Q: 101 milliliters of benzene solution containing 1.24 grams of organic polymer has an osmotic pressure…

A: The solution is provided in the image below

Q: A solution contains a mixture of pentane and hexane at room temperature. The solution has a vapor…

A: Given :-  vapor pressure of solution = 248 torr  vapor pressure of pure hexane = 151 torr  vapor…

Q: Calculate the mole fraction, molarity and molality  of NH3 if it is in a solution composed of 30.6g…

A: Molarity is the unit of concentration of a solution, and its unit is mol/Lmol/L. It is defined by…

Q: A solution containing 5.8 g of non-volatile nonelectrolyte solute in 750 g water freezes at…

A: We have given that Mass of substance = 5.8 g Mass of solution = 750 g = 0.75 kg Kf for water = 1.86…

Q: Freezing point lauric acid = 44.5 degrees C  Freezing point solution = 40.7 degrees C Mass of…

A: Given : Freezing point lauric acid = 44.5 oC  Freezing point solution = 40.7 oC Mass of unknown…

Q: Calculate the molarity of a 6.0 molal H,SO, solution. The molar mass of H,SO, is 98.077 g/mol and…

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Q: A solution contain 70.2g sugar (molar mass= 342 g/mol) dissolved in 816 g of water. a) What is the…

A: mass of sugar= 70.2 g , molar mass of sugar=342 g mol-1 mass of solvent=816 g = 0.816 Kg  then,

Q: 20.3 g of Urca NHCONH2 was dissolved in 100 g of water. The volume of the resulting solution is…

A: Part d is mass percent of NaOH but NaOH is not used in the formation of solution. So i have…

Q: 70.0 grams of sugar (C12H22O11) is mixed with 465.0 mL of water. Calculate the molality and mole…

A: Molality can be defined as the number of moles of solute dissolved per kilogram of solvent. Solute…

Q: When converting from a unit of molarity to molality, weight %, or mole fraction besides the value of…

A: Molarity is number of moles of solute present per unit litre volume of solution.  Molality is…

Q: The percent by mass of ethanol (MM=46.07g/mol) in an aqueous solution is 12.3%. What is the molality…

A: given,  Mass % = 12.3 % Molar mass of Ethanol = 46.07 g/mol Molality of ethanol solution = ?

Q: 18.0 %(m/m) solution of potassium chloride has a density of 1.12 g/cm3 at 20.0 °C. Calculate the…

A: %m/m of KCl = 18.0%  Density of KCl = 1.12 g/cm3  Molarity = ?  Molality = ?

Q: A solution is prepared by dissolving 49.3 g of KBr (Molar mass = 119 g/mol) in enough water to form…

A: Answer: Given data: mKBr=49.3gMKBr=119g/molVsolution=473mLdsolution=1.12g/mL

Q: An aqueous solution is 1.581 molal in sodium thiosulfate. It has a freezing point of -5.370 °C.…

A: Number of particle of the compound is related to depression in freezing point as follows:Where, KF…

Q: A 7.50 g sample of a nonvolatile, non-electrolyte is dissolved in 75.0 g of water.  The solution…

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Q: The vapor pressure of pure ethanol (C2H5OH) at 60 °C is 0.459 atm. Raoults Law predicts that  vapor…

A: number of moles of  glucose = 18/180 = 0.1moles number of moles of ethanol = 46/50 = 0.92 moles…

Q: Determine the concentration of a solution that contains 825mg of Na2HPO4 dissolved in 450.0mL of…

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Q: An aqueous antifreeze solution is 37.4% ethylene glycol (C₂H5O₂) by mass. The density of the…

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Q: A solution is prepared by mixing 41.0 mL toluene (C6H5CH3, d = 0.867 g/cm3) with 130. mL benzene…

A: Mass percentage helps in representing the aggregate of substance existing in the mixture. The…

Q: A solution is made by dissolving 0.563 mol of nonelectrolyte solute in 821 g of benzene. Calculate…

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Q: A solution of an unknown nonvolatile nonelectrolyte was prepared by dissolving 0.250 g in 40.0 g…

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Q: A solution of calcium nitrate in water is found to have a melting point of -0.87 °C. What is the…

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