4. 32.5g of Naf are dissolved in 425g of water to make one component of skin care products. Calculate the molality of the solution.

Q: An aqueous solution is made by dissolving 19.8 grams of manganese(II) sulfate in 353 grams of water.…

A: Molality is the way to express the concentration of solution as the ratio of moles of solute per…

Q: A solution of 30.0 % ethanol (C₂H5OH) by weight has a density of 0.96 g/mL. Find its molality and…

A:

Q: When a 5.64 g sample of a non-electrolyte was dissolved in 40.0 g of water, the freezing point of…

A: Molality of the solution can be calculated as follows:

Q: What mass of AgNO3 has been dissolved in 200g of H2O if the solution is 0.300 molality?

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

Q: What is the percent by mass, concentration of sucrose in a solution made by dissolving 7.6 g of…

A:

Q: what is the molality of a concentrated phosphoric acid solution that is 14.80 M and has a density of…

A: Given that : We have to calculate the molality of a concentrated phosphoric acid solution that is…

Q: What is the molality of LiCl in a solution that is 9.0% by mass LiCl and has a density of 1.00g/ml?

A: Given; % by mass of LiCl = 9.0% Density = 1.00g/ml Molality of LiCl solution = ? Note:  Molar mass…

Q: A 0.598 M aqueous solution of acetone ( acetone mw= 58.0 amu) is prepared by dissolving acetone in…

A: Given,Molarity of acetone = 0.598M.Volume of solution = 75.0mL = 0.075L.The moles of acetone can be…

Q: Calculate the molality of the following:(a) A solution containing 174 g of HCl in 757 g of H2O(b) A…

A: Given that:                 Mass of HCl = 174 g             Mass of water = 757 g Mass of…

Q: An aqueous solution of AlF3 (molar mass=84.0 g/mole) has a molarity of 0.750 M and a density of 1.04…

A: The mass of the solvent in kg is determined as follows.…

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

A: Mass by mass % gives an idea about the amount of solute dissolved per 100 g of solution. Here mass %…

Q: What is the molality of a solution prepared from 100g of aluminum phosphate dissolved in 1200 mL of…

A: Answer is explained below. To calculate the molality of the aluminum phosphate solution first we…

Q: The electrolyte in automobile lead batteries is a 3.75M sulfuric acid (H,SO) solution. Calculate the…

A: The ratio of mass of solute to the mass of solvent in kg is known as molality. The ration of mass of…

Q: How can I find Molality by using the Density of a chemical compound?  I know m=mol/kg, but I always…

A: First we need to find out density. density = mass / volume   moles = mass/ molar mass   molality =…

Q: What is the molality of a 30.0% by mass hydrochloric acid solution? The density of the solution is…

A: Given: The density of the hydrochloric acid solution is 1.1493 g/mL The mass percentage of the…

Q: A solution of H2SO4(aq) with a molal concentration of 2.88 ? has a density of 1.167 g/mL. What is…

A: Given, Molal concentration of H2SO4 solution = 2.88 m Density of the acid solution = 1.167 g/mL…

Q: What is the percent % (w/w), concentration of sucrose in a solution made by dissolving 7.6 g of…

A: Mass of glucose (solute) = 7.6 g  Mass of water (solvent) = 83.4 g  Percent concentration (weight…

Q: An aqueous solution is made by dissolving 23.8 grams of sodium sulfide in 465 grams of water. The…

A: To compute the molality of sodium sulfide solution. Given that: Mass of sodium sulfide = 23.8 grams…

Q: Calculate the molality of a 4.05 M ethanol (C2H5OH) solution whose density is 0.9495 giml 10.3 m…

A:

Q: An aqueous solution is made by dissolving 16.0 grams of manganese(II) chloride in 405 grams of…

A: Given , mass of manganese(II) chloride = 16.0 g             mass of solvent i.e. water = 405 g = 405…

Q: The percent by mass of acetonitrile (MM = 41.05 g/mol) in an aqueous solution is 27.3%. What is the…

A: Given, molar mass of Acetonitrile = 41.05 g/mol Mass % = 27.3 %  Let 100 g sample of this Solution…

Q: 4.) "Rubbing alcohol" is a mixture of isopropyl alcohol (C3H,OH) and water that is 70 percent…

A: Given mass percent of C3H7OH = 70℅ density of solution = 0.79 g/ml

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

A: Given an aqueous solution is 27.2 % ethanol, C2H5OH , by mass  We have to find its molality

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: Find the molarity and molality of NH, if it is in a solution composed of 30.6 g NH, in 81.3 g of…

A: Given information,    Mass of NH3 = 30.6 g    Mass of water = 81.3 g    Density of solution = 0.982…

Q: The density of a 0.500 Molar solution of acetic acid is 1.0042 g/ml. What is i s molality ?

A: Here we have: molarity of solution = 0.500 M density of solution  = 1.0042 g/ml Also, molar mass of…

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: What is the molality of a 12.0M HCI solution with a density of 1.18g/mL? What is the mass percent?

A: Hello. Since multiple questions have been posted, the first question shall be solved only. In case…

Q: A solution of aqueous substance (molar mass 90.8 mol) has a molarity of 2.1 M and density of…

A:

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: An aqueous solution of ammonium sulfate is made. If the Kf is 1.86 and the freezing point is -8.75°C…

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

Q: Calculate the molality when 55.0 grams of MgCl2 is dissolved in 500.0 g of solvent.

A:

Q: What mass of potassium chloride (KCl) is soluble at 40oC?

A: The given solubility graph of salts is :

Q: What is the molality of a solution made by mixing 4.5 grams of KNO3 [ molar mass ( 101.1032 g = 1…

A: Molarity = moles of soluteVolume of solution (l)Solute is KNO3moles ofKNO3 = given weight (g)Molar…

Q: What is the molality of a 0.5000 M solution of sucrose, C12H22O1 in water? the density of the…

A: Molality is moles of solute in 1000 g solvent.  Molarity is  moles of solute in 1000 ml of solution.

Q: what is the molality of KF solution if 0.231g of KF are dissolved in 225g of water?

A: Molality is defined as number of solute present in 1000gm of solvent . Molality= mole×mass of…

Q: Calculate the molality of a 0.410 molar aqueous solution whose density is 1.15 g/mL.

A: Given that  Molarity for a aqueous solution = 0.410 molar density of solution  = 1.15 g/ml To…

Q: Calculate the molality of a solution formed by dissolving 36.6 g of lithium iodide (LiI) in 500.0 mL…

A: Given :  Here Lithium iodide is a solute while Water is the solvent. Mass of Lithium iodide (m) =…

Q: 3.What is the molality(m) of a solution made from dissolving 179g.of MgCl2 into 1.00L of water?

A: Mass of MgCl2 = 179 g  Volume of water = 1.00 L We need to determine the molality of solution.

Q: a) What is the molality of a solution made by dissolving 10 moles of hydrogen peroxide, H₂O₂, in 10…

A: molality is defined as number of gram moles of solute present in 1.0 kg of solvent.   m = n (mol)Wt.…

Q: 3. Calculate the molality of a 6.55 kg sample of a solution of the solute CH;Cla dissolved in the…

A: Since you have posted multiple questions, we will solve the 1st one for you. Kindly post the other…

Q: A solution of H2SO4(aq) with a molal concentration of 1.66 ? has a density of 1.104 g/mL. What is…

A: H2SO4 molality = 1.66 m ( Molality =   moles of substance / mass of solvent in Kg ) Moles of H2SO4 =…

Q: Calculate the m (molality) of a solution prepared by mixing 8.205 g LiCl with 750.0 g of H2O.

A: Given that,  Amount of LiCl , w1 = 8.205 g Amount of H2O , w2  = 750.0 g  = 0.750Kg Molar mass of…

Q: An aqueous solution is 1.00% by mass ethanol, CH3CH2OH, and has a density of 0.996 g/mL. The…

A: Given, an aqueous solution is 1.00 % by mass ethanol.has a density of 0.996 g/mLwe are asked to…

Q: calculate the molality. (d) 0.372 g of histamine, C5H9N, in 125 g of chloroform, CHCl3

A: Note - Since the chemical formula given for histamine in the question is incorrect, we will consider…

Q: Calculate the molality of a solution formed by dissolving 29.22 g of NaCl in 1.00 kg of water,

A: molality of a solutionIt is the number of moleo of thesolute dissolved per 1000 g (or 1 kg)of the…

Q: Calculate the molality of a 6.39 M ethanol (C,H5OH) solution whose density is 0.9261 g

A: Molarity of ethanol = 6.39 M. 6.39 M solution means 6.39 moles of ethanol in 1 L of solution. Volume…

Q: 7. A concentrated phosphoric acid solution contains 85% by mass of H3PO4. Calculate the molality of…

A: We need to calculate the molality of given phosphoric acid using mass percentage.