2. Complete the table by writing the correct answer on the space provided. The final answer must be two decimal places and round off. ATOMIC MASSES: Na-23, Cl-35, K-39, 0-16, H-1, Li-7 Solution Mass Solute LICI Mass Mass Solvent Solution Mass Solute : Mass Solvent : Mass Solution : MW Solvent : Mole fraction Solvent: Molality: grams grams g/mole mole moles/kg MW MW Solute solvent Mole Mole Mole Solute Solvent fraction solute 20.00 0.20 Mole Molality fraction solvent

2. Complete the table by writing the correct answer on the space provided. The final answer must be two decimal places and round off. ATOMIC MASSES: Na-23, Cl-35, K-39, 0-16, H-1, Li-7 Solution Mass Solute LICI Mass Mass Solvent Solution Mass Solute : Mass Solvent : Mass Solution : MW Solvent : Mole fraction Solvent: Molality: grams grams g/mole mole moles/kg MW MW Solute solvent Mole Mole Mole Solute Solvent fraction solute 20.00 0.20 Mole Molality fraction solvent

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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What is the weight molarity of a solution prepared by dissolving 1.583 g of NaCl (58.442 g/mol) in 93.217 g of distilled water? Hint: solution = solute + solvent A. 0.2857 B. 0.4635 C. 0.1000 D. 0.3960
Which of the following three solute/solvent pairs are insoluble? Choose one or more: benzene/toluene Benzene Toluene acetone/ammonia Acetone H. N. H. Ammonia mercury/water Hg Mercury O. H. Water O butane/ethanol Butane H. Ethanol water/xylene H' H. Water Xylenes propane/octane Propane Octane
Moles of solute (mol)Use the molality to convert kg of solvent to moles of solute. Hints: molality of the solution (m) 0.76612903225806 Mass of solvent in grams 151.5 Mass of solvent in kilograms 0.1515
The molality of hydrochloric acid, HCI, in an aqueous solution is 7.96 mol/kg. What is the mole fraction of hydrochloric acid in the solution? An error has been detected in your answer. Check for typos. miscalculations etc. before submitting your answer. Submit Answer Retry Entire Group 2 more group attempts remaining
A 0.32 M aqueous solution of an unknown solute has a density of 1.08 g/mL. The molar mass of the solute is 146.8 g/mol. What is the molality of this solution? Report your answer in mol/kg and round to the second decimal place.
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kg H,O 2.97 mx 0.218 kg 0.648 mol 772 38.7g 59.7 g/mol 0.648 mol The molar mass of the unknown solute is 59.7 g/mol. Knowing the molar mass is an important step in determining the identity of an unknown. A similar problem could be done with the change in boiling point. Activity: 1. 5.00 g of an organic solid is dissolved in 100.0 g of benzene. The boiling temperature of this solution is 82.42 °C. The boiling temperature of pure benzene is 80.10 °C; Kb -2.53 °C /m. What is the molecular weight of the unknown compound? %3D
Fill in the values for the table. The molar mass of NaCl is 58.443 g/mol Mass of NaCl (g) Mass of solution (g) Volume of solution (mL) Boiling point (C) Mass of water (g) % NaCl (%) Density of Solution (g/mL) Moles of NaCl (mol) Molarity (mol/L) Molality (mol/kg) 0.0000 9.9451 10.00 99.8 c 1.0090 100.3998 100.00 100.4 2.4904 101.4023 100.00 100.8 5.0063 103.2222 100.00 101.5 5.1559 103.0978 100.00 102.1 6.0024 103.4004 100.00 101.1 6.3477 104.9210 100.00 102.7 7.4815 104.5044 100.00 101.8 10.0041 106.2007 100.00 102.1 10.2103 106.6904 100.00 102.8
decimal place. No unit or wrong unit means wrong answer. 1. It is desired to prepare cupric sulfate solution by dissolving 250 grams of cupric sulfate in enough water to a volume of 900 mL. The solution has a density of 1.405 g/mL. Calculate: c) mole fraction of solute a) % by weight of solute b) Molality d) Normality 2. The density of toluene, C7H8, is 0.867 g/mL and the density of thiopene, CAH4S , is 1.065
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