1) The boiling point of chloroform, CHCl3, is 61.700 °C at 1 atmosphere. Kb(chloroform) = 3.67 °C/m In a laboratory experiment, students synthesized a new compound and found that when 13.43 grams of the compound were dissolved in 247.2 grams of chloroform, the solution began to boil at 62.807 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? ___g/mol

Q: Calculate the molality of a 32.3% (by mass) aqueous solution of nitric acid. Calculate the molality…

A: Molality is equal to the number of moles of solute dissolve in per kg of solvent. It is denoted by…

Q: What is the freezing point of an aqueous sucrose solution that has 25.0 g of C12H22O11 per 100.0 g…

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Q: what is the molality of a solution if a nonvolatile solute increased the boiling point of pure…

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Q: Calculate the molality of saturated aqueous sodium chloride (58.443 g/mol). A saturated solution…

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Q: What is the molality of a solution made by dissolving 49.4 grams of (NH 4) 2SO 4 in 775 grams of…

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Q: A solution is prepared by dissolving 32.5 g of glucose (180.156 g/mol) in 593. g of water (18.015…

A: Given mass of Glucose = 32.5 gram Molar mass of Glucose = 180.156 g/mol Moles of Glucose =…

Q: Imagine that you have two solutions of glucose in water. One solution consists of 1g of glucose in…

A: The relation between osmotic pressure and concentration is shown below: π=CRT From the above…

Q: The boiling point of chloroform, CHC13, is 61.700 °C at 1 atmosphere. K(chloroform) = 3.67 °C/m In a…

A: Elivation in boiling point  ∆Tb = i x Kb  x m where ∆Tb = Ts - To i = 1 ( non electrolyte solute)m…

Q: Determine the molality of a solution prepared by dissolving 75g of Ba(NO3)2(s) in 374g of water at…

A: Given that: mass of  Ba(NO3)2(s) = 75 g  mass of water = 374 g  To find: molality of a solution?

Q: Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0…

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Q: A 100. mL aqueous solution prepared by dissolving 25.0 g of a non-electrolyte solute had a freezing…

A: Given :  Kf = 1.86 °C/m  Freezing point of solution (Tf) = -1.26 °C  Mass of solute = 25.0 gm…

Q: What is the molality of a solution in which 13.7 g of sodium sulfate, Na2SO4, has been dissolved in…

A:

Q: What is the molality of an aqueous solution that is 10.0% ethanol, C2H5OH, by mass? Select one: a.…

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Q: Q3: A- Calculate the Molality of a solution containing 5.6 g of Sodium hydroxide (NaOH) in 250 g of…

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Q: A beverage contains tartaric acid, H2C4H4O6, a substance obtained from grapes during wine making. If…

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Q: A solution was prepared by dissolving 12.0 g of glucose (180 g/mol) in 150. mL solution. What is the…

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Q: In an experiment analyzing a hand sanitizer at 20 degrees celsius, the density of ethanol,…

A: Here we are required to find the density of an ideal solution containing 62.00% by mass of ethanol…

Q: Calculate the freezing point of a glass of water of volume 250cm3 sweetened with 7.5g of sucrose

A: A question based on mole concept that is to be accomplished.

Q: 6 What is the molality of the solution obtained by dissolving 2.25 g of glucose in 240 grams of…

A: Given,

Q: Calculate the freezing point of a solution that contains 168.4 g of sucrose (table sugar) in 300. g…

A: Since sucrose is a non electrolyte  Hence the i = Van't Hoff factor = number of ions produced by the…

Q: How many liters of the antifreeze ethylene glycol [CH2(OH)CH2(OH)] would you add to a car radiator…

A: According to the equation for depression in freezing point  △Tf = Kf × wGMW×Wkg where w = Wt of…

Q: 3. Calculate the freezing and boiling point of a solution prepared by dissolving 32.60 g of ferric…

A: Answers are as follows:

Q: Fill in the blanks: Given the following data for Mass of test tube, beaker and cyclohexane = 100.17…

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Q: Magnesium citrate, Mg3(C6H5O7)2, belongs to a class of laxatives called hyperosmotics, which cause…

A: Moles of magnesium citrate = mass / molar mass                                                 =…

Q: If 123 g of C10H16O are dissolved in 355 g of C6H6, what is the freezing point of this solution?

A:

Q: Aqueous ethanol solutions are prepared by mixing measured weights of assayed ethanol and…

A:

Q: The normal boiling point of chloroform CHCl3 is 61.700 °C and its Kbpvalue is 3.67 °C/m. In a…

A: The elevation in boiling point can be calculated as follows,

Q: How would you prepare 455g of an aqueous solution that is 4.45% by mass of Barium hydroxide ? What…

A: Given: Mass of solution = 455 g. And percent by mass of barium hydroxide i.e. Ba(OH)2 = 4.45 %.

Q: The solubility of potassium chloride is 34.2g/100.0g of water at 20 degrees celcius. Which of the…

A: Given: Solubility of potassium chloride = 34.2g/100.0g of water. (Means 34.2 g of potassium…

Q: What is the freezing point of a 1.337  m aqueous solution of aluminum nitrate, Al(NO3)3? The Kf of…

A: The value for the van’t Hoff factor,'i' for Aluminum nitrate can be calculated by writing the…

Q: What is the freezing point of an aqueous 1.78 m CaCl2 solution? (Kf for water is 1.858°C/m.)

A: Freezing point of water , T°f = 0°C   Now, molality of solution is,m= 1.78m Kf for water is…

Q: In order to find the molar mass of an unknown compound, a research scientist prepared a solution of…

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Q: What is the freezing point, if 25.0 grams of MgCl2 is mixed with 300.0 grams of water?

A: Given : mass of MgCl2 = 25 g              Mass of water = 300 g  = 0.3 kg

Q: Rubbing alcohol commonly is used as an antiseptic for small cuts. Rubbing alcohol is sold as 70.0%…

A:

Q: A solution of H2SO4(aq) with a molal concentration of 2.24 ? has a density of 1.135 g/mL. What is…

A: Given : Molality = 2.24 m Density = 1.135g.ml-1

Q: Estimate the boiling point of 5 LL of water to which a teaspoon (6 gg) of salt (NaCl)(NaCl) has been…

A: Boiling point of water = 100°C  Volume of water = 5L or 5000mL Mass of salt = 6g  Molar mass of salt…

Q: What is the molal concentration of C10H8 in a solution made by dissolving 0.127 g C10H8 in 9.132 g…

A: In the given question, we are required to determine the molal concentration of C10H8 in a solution…

Q: You have a 10.40-g mixture of table sugar (C 12H 22O 11) and table salt (NaCl). When this mixture is…

A: Given mass of mixture = 10.40 g Mass of water = 150 g Freezing point = -2.24°C some standard values…

Q: The normal temperature range of the liquid phase of pure water is 0°C to 100°C. Which of the…

A: Since depression in freezing point is given by  depression in freezing point = i X Kf X m  where i =…

Q: What is the freezing point of an aqueous calcium sulfate solution prepared by mixing 45.0 g of…

A: The freezing point of a solution is always less than that of the pure solvent. The freezing point…

Q: An aqueous zinc bromide solution (ZnBr2) boils at 100.250 °C.  What is the molality of this…

A: Given  The Boiling point of Aqueous solution ZnBr2  = 100.250 ℃  Kb  of water   = 0.512 ℃/m…

Q: The density of a 2.45 M aqueous solution of methanol (CH3OH) is 0.976 g/m. What is the molality of…

A: Molarity of CH3OH (M) = 2.45 M Molar mass of methanol = 32.04 g/mol density of methanol = 0.976 g/L

Q: Glucose, C6H12O6, in water is often used for intravenous feeding. Sometimes sodium ions are added to…

A: Given that : Mass of Na+ = 2.0 mg = 0.002 g Mass of glucose = 6.00 g Mass of water (solvent) = 112.0…

Q: What is the molar mass of toluene if 0.85 g of toluene decreases the freezing point of 100. g of…

A: When a solute is dissolved in the water, the vapor pressure of the solution is lower than the pure…

Q: The normal freezing point of a certain liquid X is 0.60°C, but when 0.14 kg of barium hydroxide…

A: Given : Mass of barium hydroxide, Ba(OH)2 i.e solute = 0.14 Kg = 140 g         (since 1 Kg = 1000 g)…

Q: Water has a molal freezing point constant of 1.86°C kg/mol.  Calculate the freezing point of 29.046…

A: Given that, molal freezing point constant of water, Kf = 1.86°C kg/mol Weight of Glucose, w = 29.046…

Q: A beverage contains tartaric acid, H2C4H4O6, a substance obtained from grapes during wine making. If…

A:

Q: The freezing point of an aqueous solution of barium nitrate is -2.65°C. Determine the apparent molal…

A: Given: Freezing point of solution = -2.65°C Freezing point of water = 0°C Molal freezing point…

Q: Complete the following table of an aqueous solution of potassium hydroxide  Density (g/ml)…

A: The molality and the mass percentage of the solute is calculated as shown below. Molarity M=1.13 mol…

Q: What is the molality of a solution consisting of 9.265 mass % of C2H5OH dissolved in water

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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.