3. Given that for two immiscible liquids like those used in this experiment (an oil and water): P total = Po and + Po water [moles (oil)/moles(water)] = [Pool water] Calculate the following for an oil (MW = 169 g/mol) that distills during steam distillation at a boiling temperature of 98 °C at 1 atm of pressure. [Hint: The vapor pressure of water at 98 °C is needed...try Google!] a. The mass of the oil that codistills with each one gram of water at 98 °C. b. Suppose you had two grams of a spice that contained 5% by mass of this oil. How much water would be required to recover all of the oil by steam distillation?

Pure butanol (C4H₁00) has a normal boiling point of 117.73 °C. A solution of 30.1 g of phenolphthalein (C20H1404) in 167 g of butanol has a boiling point of 118.94 °C. Calculate Köp for butanol based on this experiment. °C m-1 Kbp =

3. You are asked to calculate the Kf for t-butyl alcohol (MW = 74.122 g/mol). You gather the following information in your experiment. You weigh out 2.124 g t-butyl alcohol and you determine the freezing point of the solvent t-butyl alcohol is 21.6 °C (freezing point pure t-butyl alcohol). You then add water to the test tube with the t-butyl alcohol and measure the freezing point to be 15.3 °C. What key piece of information are you missing to calculate the Kf?

A chemist attempts to prepare some very pure crystals of borax by dissolving 100g of Na2B4O7 in 200 grams of boiling water. He then cools the solution slowly until some borax crystallizes out. Calculate the grams of borax recovered in the crystals per 100 grams of initial solution (NazB4O7 plus water), if the residual solution at 55°C after the crystals are removed contains 12.4% NazB4O7.What is the percent yield or percent recovery of Na2B4O7.

Extra information: freezing point depression constant for the solvent (20 degrees celsius kg/mol for cyclohexane)   I am trying to figure out this problem and need a step by step guide in order to find the answer using the data given. Thank you!

5 L山 When 1.06 g of a certain molecular compound X are dissolved in 85.0 g of dibenzyl ether ((C,H,CH,),0), the freezing point of the solution is measured to be 0.9°C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to 1 significant digit. 自 OL Check Save For Later Submit Assignment O2022 McGraw Hill LLC. AlI Rights Reserved. Terms of Use Privacy Center Accessibility EPIC 中Xe MacBook Pro F2 F3 F4 F7 F8 F10 6-5 #3 3. 2 $ 一 8 dele R. A C. W alt alt option 10 command option 1Q15

O States of Matter Using the Kf and Kb equations with electrolytes 1/5 Donnah The normal freezing point of a certain liquid X is 7.00 °C, but when 67.0 g of benzamide (C,H-NO) are dissolved in 700. g of X the solution freezes at 5.2 °C instead. Use this information to calculate the molal freezing point depression constant Kƒ of X. Be sure your answer is rounded to the correct number of significiant digits. K₁ = 0 °C-kg mol X

References Use the References to access important values if needed for this question. The normal boiling point of diethyl ether (CH3CH,OCH,CH3) is 34.50 °C and its Kpp value is 2.02 °C/m. A nonvolatile, nonelectrolyte that dissolves in diethyl ether is testosterone. If 11.37 grams of testosterone, C19H2802 (288.4 g/mol), are dissolved in 286.0 grams of diethyl ether: The molality of the solution is m. The boiling point of the solution is -c. Submit Answer 4. BP/FP Calculations: Solutions of Nonelectrolytes: This is group attempt 1 of 5 Regenerate Group Rack

Given: Mass of lauric acid (g): 8.000g Mass of benzoic acid (g): 1.027g Freezing temperature of pure lactic acid(°C): 43.3°C Freezing point of the benzoic acid-lauric acid mixture(°C): 39.8°C   Question: Calculate molality (m,) in mol/kg, using the formula ΔTf = m × Kf. The Kf value for lauric acid is 3.9°C x kg/mol.

When 127. mg of a certain molecular compound X are dissolved in 55.0 g of dibenzyl ether point of the solution is measured to be 1.6 °C. Calculate the molar mass of X. If you need any additional information on dibenzyl ether, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. ((C6H₂CH₂)₂0), 2 the freezing OO B olo Xu