A solution is prepared by combining 5.03 grams of an unknown non-electrolyte with 323.0 grams of chloroform. The freezing point of the mixture is --64.76 oC, while the freezing point of pure chloroform is -63.50oC. The kf of pure chloroform is 4.68 oC/molal. Based on this information, determine the moles of solute present in this solution. When answering this problem, report the answer with the appropriate number of significant figures.

Q: The molality concentraion of a solution can be described as  - the moles of solute per liter of…

A: Molarity is defined as the moles of solute per litre of a solution. Molarity is also known as the…

Q: This question is part one of three. When answering this problem, report the answer with the…

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

Q: A solution contains 20.5 g of sodium chloride dissolved in sufficient water to give a total mass of…

A: Molality is represented by ‘m’ and is defined as the number of moles of solute present in 1 kg of…

Q: A student dissolves 19. g of glucose (CH,20,) in 250. mL of a solvent with a density of 0.84 g/mL.…

A: Mass of glucose = 19 g Volume of solvent = 250 mL Density of solvent = 0.84 g/mL Molarity =?…

Q: A student dissolves 7.9 g of resveratrol (C4H120,) in 425. mL of a solvent with a density of 0.90…

A: First we will calculate number of moles of resveratrol. Then calculate molarity and molality of…

Q: (b) An aqueous solution of a nonelectrolyte is made by dissolving the solute in 1 L of water. The…

A: Answer:- This question is answered by using the simple concept of depression in freezing point using…

Q: The concentration of this solution in parts per million is?

A: Given :- mass of glucose(solute) = 0.125 g                mass of solution = 250 g  To calculate :-…

Q: A solution is made using 293.5 mL of methanol (density 0.792 g/mL) and 300.0 mL of water (density…

A: Given:Volume of methanol = 293.5 mL.Density of methanol = 0.792 g/mL.Volume of water = 300…

Q: PERCENT BY MASS Percent by Mass mass of solute mass of solution Percent by mass equals the mass of…

A: We have to solve the mass % of the data of student A and student B.

Q: [References) Use the References to access important values if needed for this question. The freezing…

A:

Q: aqueous solution of silver acetate, AgCH3COO, contains 4.32 grams of silver acetate and 17.6 grams…

A: An  aqueous  Solution contains   AgCH3COO and H2O.  Therefore ,Mass of  aqueous  Solution  =Mass of…

Q: 2. A solution is prepared by dissolving 10.44 g of NaCl in enough water to make 500.0 mL of…

A:

Q: What is a nonvolatile nonelectrolyte? Why is this type of solute the simplest case for examining…

A: Non-volatile means a substance which do not form vapors easily and thus possess a low vapor pressure…

Q: Which of the samples shown here will have the highest vapor pressure? Shaded spheres represent…

A: Since the vapor pressure of any liquid is directly proportional to the mole fraction of liquid in…

Q: The freezing point of ethanol CH3CH2OH is -117.30°C at 1 atmosphere. A nonvolatile, nonelectrolyte…

A:

Q: Equal masses of acetone (CH3COCH3, molar mass = 58 g/mol and density = 0.79 g/mL) and water (molar…

A: Molality is given by  Molality = moles of solute / mass of solvent in Kg Since molality of acetone…

Q: What mass of glycerin (C3 Hg O3), a nonelectrolyte, must be dissolved in 200.0 g water to give a…

A: Given: Freezing point depression (f) = 0 -(-4.20) = 4.200C Molar mass of glycerine (M2) = 92.094…

Q: A solution is made using 200.0 mL of methanol (density 0.792 g/mL) and 300.0 mL of water (density…

A: Mass of methanol is calculated as,

Q: A solution is made using 257.7 mL of methanol (density 0.7920 g/mL) and 300.0 mL of water (density…

A: Given: Volume of methanol = 257.7 mL Density of methanol = 0.7920 g/mL Volume of water = 300.0 mL…

Q: A solution is made by dissolving 56.0 g CaCl, in 150.0 g of water. What is the molality (m) of this…

A:

Q: A homogeneous mixture of two (2) or more substances originally in any of the three states of matter…

A: A homogeneous mixture of two (2) or more substances originally in any of the three states of matter…

Q: Calculate the molality of a solution formed by adding 5.60 g NH4Cl5.60 g NH4Cl to 12.4 g12.4 g of…

A:

Q: solution is prepared at 20°C and its concentration is expressed in two different units; Molarity and…

A:

Q: An aqueous solution is 12.0% by mass ammonia, NH3, and has a density of 0.950 g/mL. The molality of…

A:

Q: 14. A 25.0 mL sample of concentrated H3PO4 (14.7 M) is diluted to a final volume of 750.0 mL. What…

A: Dilution is the process of decreasing the concentration of a solute in a solution usually simply by…

Q: A solution is made using 79.9g if phenol (MM = 94.21 g/mol) and 90.0 g of acetone (MM = 58.08…

A:

Q: A solution containing an equimolar amount of NaCl and HCl is prepared. Assuming 1 mol of NaCl and 1…

A:

Q: An intravenous glucose (C6H1206) solution is prepared by adding 5.10 g of glucose to 100.0 g of…

A: Mass of glucose = 5.10 g Molar mass of glucose = 180.18 g/mol Moles of glucose =MassMolar mass=5.10…

Q: At 20 °C, an aqueous solution of NaCl was prepared by dissolving 11.44 g NaCI (Molar Mass = 58.44)…

A: Molality (m) :-  The number of moles of solute dissolved in one kg (kilogram) of solvent is defined…

Q: When a solute is dissolved in a liquid, the vapor pressure is increased because the surface area…

A: The vapour pressure of solution is defined as the pressure exerted by the vapours in the equilibrium…

Q: The freezing point of water, H,0, is 0.000 °C at 1 atmosphere. KAwater) = 1.86 °C/m In a laboratory…

A:

Q: When 4.76 g of a nonelectrolyte solute is dissolved in water to make 115 mL of solution at 24 °C,…

A:

Q: solution is prepared by combining 5.18 grams of an unknown non-electrolyte with 283.0 grams of…

A: Given: Freezing point of pure substance=Tfo=-63.50oCFreezing point of…

Q: A student dissolves 14. g of stilbene (C,H,,) in 450. mL of a solvent with a density of 1.09 g/mL.…

A:

Q: . A sealed flask containing solutions that was previously heated was left in the room to cool down.…

A: Concentration refers to the amount of solute (mass or mol or volume) present per unit mass of…

Q: A student dissolves 12. g of benzoic acid (C,H,0,) in 100. mL of a solvent with a density of 0.88…

A: Molarity of a solution can be defined as the number of moles of solute dissolved per litre of…

Q: This question is part two of three. When answering this problem, report the answer with the…

A:

Q: When 4.47 g of a nonelectrolyte solute is dissolved in water to make 115 mL of solution at 23 °C,…

A: The molar concentration of non-electrolyte solution from the given osmotic pressure is calculated…

Q: . What is the molecular mass of a substance if 22.5 g dissolved in 250 g of water produces a…

A: The formula for freezing point depression when a solute is added to a solution is : ∆Tf=Kf×m∆Tf→ The…

Q: A solution is made using 121.8 mL of acetonitrile (density 0.7766 g/mL) and 250.0 mL of water…

A: From the Formula of Molarity we can solve this problem.

Q: When 3.87 g of a nonelectrolyte solute is dissolved in water to make 645 mL of solution at 29 °C,…

A: Given-> Weight of non electrolyte = 3.87 gm Volume of solution= 645 ml = 0.645 L (1L = 1000 ml)…

Q: 13. Molality of a solution is: a. Moles of solute/liters of solution b. Moles of solute/liters of…

A: Concentration of any solution can be defined in terms of molality, molarity , ppm etc.

Q: Calculate the molality of a copper (ll) nitrate solution which contains 35.0 g of copper (ll)…

A: We have given that  Mass of Copper nitrate = 35.0g Molar mass of Copper nitrate = 187.56g/mole…

Q: A student dissolves 8.9 g of methanol (CH,OH) in 175. mL of a solvent with a density of 0.88 g/mL.…

A: given mass of methanol = 8.9 g volume of solution = 175 ml density of solution = 0.88 g/mol

Q: A student dissolves 20. g of benzoic acid (C,H,0,) in 125. mL of a solvent with a density of 1.07…

A: The mass of benzoic acid, the solute is = 20. g The volume of solvent and solution is = 125. mL The…

Q: Which of the following BEST describes why vapor pressure of a solution is lower than that of a pure…

A: The ability of a component to change its form to the gaseous state. It is measured by the pressure…

Q: A solution is prepared by mixing 631 mL of methanol with 501 mL of water. The molarity of methanol…

A:

Q: You have a solution which is 43.9% by mass isopropyl alcohol (MM = 60.11 g/mol) in water. The…

A:

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.