Pls answer number 5 thank you 1.A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C,H14 and 10.0 g benzene,C6H6. What is the mole fraction of hexane?2.What is the mole fraction of ethanol, CH;CH20H, in an aqueous solution that is 20.0%ethanol by mass?3.Sucrose is a nonvolatile, nonionizing solute in water. Determine the vapor pressurelowering, at 27°C, of a solution of 75.0 grams of sucrose, C12H2011, dissolved in 180.g of water. The vapor pressure of pure water at 27°C is 26.7 torr. Assume thesolution is ideal.What is the vapor pressure of a aqueous solution containing 10% (by weight)ethylene glycol (62 g/mol) at 25ºC. PH20 = 24.3 torr at 25°C.4.If 4.27 grams of sucrose, C12H22011, are dissolved in 15.2 grams of water, what willbe the boiling point of the resulting solution? Ko for water = 0.512ºC/m.5.6.The freezing point of a solution of 1.048 g of an unknown nonelectrolyte dissolvedin 36.21 g of benzene is 1.39°C. Pure benzene freezes at 5.48°C and its K; value is5.12°C/m. What is the molecular weight of the compound?A 1.0 g sample of a molecular compound having a molecular weight of 100,000g/mol is dissolved in 100. g of water. Calculate the osmotic pressure of the solutionin torr at a temperature of 27°C. (Assume the volume of the solution is 100. mL.)7.

Solution 5. Given that , Mass of sucrose (solute ) = 4.27g Molar mass of solute (C12H22O11 ) =…

Answered: If 4.27 grams of sucrose, C12H22011,…

If 4.27 grams of sucrose, C12H22011, are dissolved in 15.2 grams of water, what will be the boiling point of the resulting solution? Ko for water = 0.512ºC/m. 5.

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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Question 1 of 20 A barrel of crude oil has a volume of 42 gallons, only approximately 45% of which is processed into gasoline. If your car achieves 32 mi/gal, and you drive 36,000 miles in one year, how many barrels of crude oil are required to run your car for a year? Tap here or pull up for additional resources
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Perform the following calculations to the correct number of significant figures. [(2.33 x 10^6) / 42.370] + 132.99
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10) The following results were obtained in an analysis of iron content in an ore sample. The results reported as % Fe for each analysis, were as follow: Samples no. 1 3 4 5 6 % Fe 20.10 20.50 18.65 19.25 19.40 19.99 i. Calculate the mean and median from the set of the data above ii. If the true value of %Fe is 19.65 %, calculate the value for absolute error and percentage relative error for sample no. 3 Using Q-test, justify whether an of the data must be rejected at 95 % ii. confidence level iv. Calculate the standard deviation and relative standard deviation of the data.