Molality problem
[DOC File]Molality Worksheet - Wisconsin Lutheran High School
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What is the molality of a solution that contains 63.0 g HNO3 in 0.500 kg H2O? What is the molality of a solution that contains .500 mol HC2H3O2 in 0.125 kg H2O? What mass of water is required to dissolve 100. g NaCl to prepare a 1.50 m solution? What mass of water must be used to dissolve 0.500 kg C2H5OH to prepare a 3.00 m solution?
[DOCX File]Home - Montgomery County Public Schools
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4. What is the molality of a solution prepared by dissolving 225 mg of glucose (C6H12O6) in 5.00 mL of ethanol (density = 0.789 g/mL) 5. Calculate the molality of a solution prepared by dissolving 125 mL of pure methanol (density = 0.791 g/mL) into 275 g of ethanol. 6. What is the mass percent of solute when 4.12 g is dissolved in 100.0 g of ...
[DOC File]REVIEW PROBLEMS – CONCENTRATION
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Problem Set #2. The following are all units of concentration. Define each of them fully. Molarity. wt% pph. ppm. ppb. Molality. Normality. Concentrated acids and bases have a specific molarity associated with them which is often expressed in terms of wt%. Fill in the table below for the Molarity or wt% of the particular acid or base.
[DOC File]Topic 12 - Solutions
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2. Converting from mole fraction to molality. a. Procedure (1) Assume total moles = 1.0000 mol (2) Determine the mole fraction of H2O. (3) Convert the mole fraction of H2O to . kilograms H2O. (4) Work the molality problem as usual. b. Example. Find the molality of an HCl solution whose mole . fraction of HCl is 0.117. Given Find = 0.117. mol ...
[DOC File]Molarity Notes – H
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Molarity Notes – H. Chemistry Name _____ Reference the text pp. 418-421 of our text (omit Molality). Sample problems A, B and C are appropriate for our class as well as the practice problems at the bottom of p. 421.. Molarity
[DOC File]Molarity Lab
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Purpose: In one or two sentences, state what the problem is that you are trying to solve. Materials: List the materials that you used in the lab. Procedure: List the steps that you used to determine the identity of the solution and its molarity. Be very . specific so that someone could repeat what you did and get the same results. Include amounts
[DOC File]Molality Worksheet 13
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Molality Worksheet. Complete the following questions and problems relating to molality. 1) Write the equation for molality: M= moles solute/ kg of solvent. 2) Write the equation for molarity: M=moles solute/ L of solution. 3) Explain in words how molality and molarity differ. M=moles/L of solution (total volume) M=moles/kg of solvent
CHapter 13 - Problems solving Pahlavan
Problem #2. An Antifreeze mixture is 11.0 molal ethylene glycol solution. Water is the solvent and it. has a mass of 800 g. What is the mass of the solution? The molar mass of ethylene glycol. is 62.0 g/mol. Problem #3. Calculate the molarity and molality of a solution that contains 18.0% HCl by mass and . has a density of 1.05 g/ml. Problem #4.
[DOC File]AP Chemistry study guide for Solutions (Chapter 11)
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molality. Calculate mole fraction. Calculate % by mass . Convert % by mass to Molarity. Calculate changes in freezing point and boiling point in . molecular solutes. Calculate changes in freezing point and boiling point in . ionic solutes. Calculate the vapor pressures of solutions (Raoult's Law) Calculate osmotic pressure. Calculate titration data
[DOC File]Chapter 13 worksheet #1
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Molality is greater than molarity because the volume increases when the solute dissolves in water so now the volume of the solution is greater than the mass of the water. If there is very little solute (dilute solution) then it is a good assumption that the volume does not change and molarity equals molality.
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