How do I use the molality of a substance to calculate the molar mass? Example: molality is .122M of an unknown substance. I have the mass of the unknown solute (.346 g), and the mass of the solvent (7.79 g).

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: For an acid or a base, when is the normality of a solution equal to the molarity of the solution and…

A: Normality is defined as the number of equivalents of solute present per litre of the solution  Hence…

Q: An aqueous solution is made by dissolving 17.3 grams of chromium(II) acetate in 351 grams of water.…

A: Number of moles of chromium(III) acetate = 17.3 g / (229.13 g/mol) =0.075 mol.

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: Suppose you take a solution and add more solvent, so that the original mass of solvent is doubled.…

A: Molality =

Q: Define the term Molality?

A: Molality is one of the many parameters that is used to express concentration of a solution.

Q: Show the calculation steps that could be used to calculate the molality if given the mass of a…

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

Q: 38.5 grams of copper(iii)sulfate is mixed in 140 ml of water. Calculate the molal concentration of…

A: Given; Mass of solute=38.5g Volume of the solution=140ml Formula: Molarity=moles of solutevolume of…

Q: Electrolytes exert a higher osmotic pressure than non-electrolytes for a reason.

A: In the above question the factors responsible for the variation of the osmotic pressure are…

Q: If a solution contains 0.817 g naphthalene dissolved in 21.3 g of cyclohexane, calculate the…

A: Given information:   The mass of Naphthalene = 0.817 g   Molar mass of Naphthalene = 128.17 g/mol…

Q: A student dissolves 20. g of glucose (C,H,,0,) in 100. mL of a solvent with a density of 0.96 g/mL.…

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Q: 4. Determine the % by mass of the solute, mole fraction molarity and molality if 106.50 g Sodium…

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Q: Can you calculate the percent composition by mass of a solution given only the molality of the…

A: Molarity is defined as number of moles of solute dissolved per litre of solution.

Q: Calculate the molarity and molality of the student's solution. cianificant digits

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Q: How do you calculate molarity and molality of a substance if you are given it's percent by mass and…

A: * Molarity of substance =  Moles of substance / volume of solution in L  * molality of Substance =…

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: How many moles of solute are in a 2 molal solution if there is 4790g water?

A: Molality can be calculated as below:

Q: 1.73 g of Liquid Limonene C10H16 (molar mass 136.238 g/mol) mixes with 4.85 g of Liquid Phenol C6H60…

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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: A solution is made using 126.9 mL of ethanol (density 0.7892 g/mL) and 350.0 mL of water (density…

A: Given: The volume of ethanol = 126.9 mL The density of ethanol = 0.7892 g/mL The volume of water =…

Q: An aqueous solution of chromium(II) nitrate has a concentration of 0.447 molal. The percent by mass…

A: An aqueous solution of Chromium(II)nitrate has a concentration of 0.447 molal.

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: A certain sample of concentrated hydrochloric acid is 54.9 % HCI. Calculate the molality of this…

A: To calculate the molality , we would need moles of HCl and mass of solvent .  So we would use given…

Q: What is the difference between molarity and molality? Which one uses mass, and why might that be…

A: Molarity and molality are both two different ways of expressing concentration of a solution

Q: What is the formula of molality? a. moles solute / L of solution O b. moles of solute / kg of…

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Q: A solution has a molality of 2.10m where the moles of the solute is 0.7 moles. What is the mass of…

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

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Q: When you calculate the molality. The number of moles of solution is important. O True O False

A: Given statement : When you calculate the molality the number of moles of solution is important.

Q: What mass of ethanol if 360 g if sucrose are dissolved in ethanol to make a 1.6 molal solution? If…

A: First, using given molality and mass of sucrose the mass of ethanol is determined.

Q: In order to calculate the molality of a solution from its molarity, what other information would be…

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Q: A commercial bleach solution contains 3.62% by mass of NaOCl in water. Calculate the molality of…

A: a ) Assuming we have 100 g of solution  Hence the mass of NaOCl in it = % by mass X mass of solution…

Q: Compute the % mass of a solution containing 5 g sodium chloride in 150 g solution? What is the…

A: Solution-

Q: The solublity is the distribution of solute molecules between solvent molecula

A: Solubility is degree to which solute dissolve in solvent to make solution. At low concentration of…

Q: Enter your answer in the provided box. Calculate the molality of a 47.1 percent (by mass) aqueous…

A: Molality - It is defined as the number of moles of solute dissolved per kg of solvent . Molality =…

Q: Commercial grade HCl solutions are typically 39.0% (by mass) HCl in water. Determine the molality of…

A: Consider the given information is as follows; 39.0% (by mass) HCl in water Molality of the solution…

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

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Q: An aqueous solution of aluminum acetate has a concentration of 0.389 molal. The percent by mass of…

A: Consider the given information is as follows; Concentration of the solution = 0.389 molal The mass…

Q: Calculate the osmotic pressure of a solution

A: The osmotic pressure of a solution is to be calculated which is made by dissolving 20.0 g of sucrose…

Q: (Q73) A solution vapor pressure (in 55.30 torr. You s

A: Here we have to find the vapor pressure of solution containing 16.9 g MgCl2 and 815.7 g water. The…

Q: An aqueous solution contains 41.5 g of HCI by mass. Calculate the molality of the solution.

A: Since no solvent has been mentioned in the question, we take it to be H2O (water).

Q: What is the difference between molarity and molality ? Which one uses mass, and why might that be…

A: Concentration of solution :- The amount of solute present in a solution is known as concentration of…

Q: An aqueous solution contains 5.8% NaCl by mass. Calculate the molality of the solution

A: Given, an aqueous solution contains 5.8% NaCl by mass. This means that in 100 g of solution has 5.8…

Q: A student dissolves 5.6 g of biphenyl (C,,H10) in 425. mL of a solvent with a density of 1.15 g/mL.…

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Q: An aqueous solution is made by dissolving 26.2 grams of chromium(II) iodide in 465 grams of water…

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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: An aqueous solution is 5.50% by mass ammonia, NH3, and has a density of 0.975 g/mL. The molality of…

A: given 1) ℅ by mass of ammonia = 5.5℅ density = 0.975 g/ml 2) Concentration of nickel(II) sulfate =…

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: An aqueous solution of ammonium nitrate has a concentration of 0.238 molal. The percent by mass of…

A: Molality (m) is defined as the number of moles of solute dissolved per kilogram of the solvent, i.e.…