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[DOC File]Molarity Worksheet
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in order to better understand “molarity”, what it means to make a “dilution”, as well as the M1V1 = M2V2 formula. Materials: LabPro interface with spectrophotometer, two 50-mL volumetric flasks, one 100-mL volumetric flask, one 250-mL volumetric flask, four 13 x 100 mm test tubes, 1 plastic cuvette, 1 50-mL graduated pipet, aspirator ...
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[DOC File]Solutions Worksheet #1 (Solutions, Electrolyte’s, and ...
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(Molarity, Dilutions, Percent Solutions, Molality Problems) Molarity. Tell how you would prepare a 500. mL of 0.50 M ammonium carbonate solution. Include all necessary equipment and amount of chemical (in grams). What is the molarity of each of the following solutions? …
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[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)
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[DOC File]AP Chemistry
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Calculate the empirical formula of the unknown hydrocarbon. (b) A solution is prepared by dissolving 2.53 grams of p-dichlorobenzene (molecular weight 147.0) in 25.86 grams of naphthalene (molecular weight 128.2). Calculate the molality of the p-dichlorobenzene solution. (c) The freezing point of pure naphthalene is determined to be 80.2˚C.
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[DOC File]Molarity of a Solution Name - Sally B Chemistry
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(% by mass, molality, molarity, density) 2. Calculate the amount of solute needed to make a specific concentration of solution and then make the solution. 3. Calculate and then dilute a concentrated solution to obtain a new molarity. DISCUSSION: To calculate the amount needed of a solute needed, the gram formula mass of the solute must be given.
molarity vs molality

[DOC File]Molarity Worksheet #1 - Science Done Wright
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What does molarity mean? Number of moles of solute. 1 liter solution. What is the molarity of a solution that contains 4.53 moles of lithium nitrate in 2.85 liters of solution? 4.53 mol LiNO3 = 1.59 M LiN03. 2.85 L soln. What is the molarity of a solution that contains 0.00372 moles hydrochloric acid in 2.39 x 10-2 liters of solution?
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[DOC File]Concentration Review Worksheet
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a) What is the molality of sodium hydroxide in this solution? 2.77 m (2.08 mol / 0.75 kg water) b) What is the percent by mass of sodium hydroxide in this solution? 9.96% (found by finding 83 g / 833 g and multiplying by 100%) c) What is the mole fraction of sodium hydroxide in this solution? 0.0475 (found by finding 2.08 mol / 43.75 mol)
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[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. means moles of solute dissolved per …
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[DOCX File]Notes: Concentration (Molarity)
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m = the molality of the solute. n = the # of particles formed from the . dissociation of each formula unit of the solute. Examples: What is the freezing pt of: a) a 1.15 m sodium chloride solution? b) a 1.15 m calcium chloride solution? c) a 1.15 calcium phosphate solution?
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[DOC File]AP Chemistry study guide for Solutions (Chapter 11)
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Molarity. Calculate. molality. Calculate mole fraction. Calculate % by mass . Convert % by mass to Molarity. Calculate changes in freezing point and boiling point in ... One point earned if molecular formula is wrong but is consistent with empirical formula and molar mass No penalty for simply ignoring the van't Hoff factor Only one point ...
molarity and molality practice

Molarity and molality formula