Use the References to access important values if needed for this question. The vapor pressure of ethanol is 54.68 mm Hg at 25°C. How many grams of chlorophyll, C55 H72 MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 290.0 grams of ethanol to reduce the vapor pressure to 54.12 mm Hg? ethanol CH3 CH2OH = 46.07 g/mol. Mass= = g Submit Answer Retry Entire Group 9 more group attempts remaining

Use the References to access important values if needed for this question. The vapor pressure of ethanol is 54.68 mm Hg at 25°C. How many grams of chlorophyll, C55 H72 MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 290.0 grams of ethanol to reduce the vapor pressure to 54.12 mm Hg? ethanol CH3 CH2OH = 46.07 g/mol. Mass= = g Submit Answer Retry Entire Group 9 more group attempts remaining

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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Determine the vapor pressure of a solution prepared by dissolving 16.8 mol of non-volatile aspirin (MM = 180.15 g/mol) in 0.691 kg of CH3CH2OH (MM = 46.07 g/mol) at 25 °C. Pº ethanol 44.0 torr at 25 °C. Give the answer to 3 significant figures. Do not include units. =
The vapor pressure of water at 25°C is 23.8 torr. An aqueous solution was made by dissolving ethylene glycol (C2H6O2) in 100 grams of water causing a vapor pressure lowering of water in this solution to 23.3 torr. (Atomic mass of carbon - 12.01 g/mol, hydrogen - 1.008 g/mol, and oxygen - 16.00 g/mol) (b)Determine the boiling point and the freezing point of the solution. (Given that Kb = 0.512 °C/m and Kf = 1.86 °C/m for water)
Use the References to access important values if needed for this question. What is the solubility of methylacetylene (in units of grams per liter) in water at 25 °C, when the C3H4 gas over the solution has a partial pressure of 0.524 atm? kH for C3H4 at 25 °C is 9.23×10² mol/L-atm.
References Use the References to access important values if needed for this question. The molar mass of a polymer can be determined from the osmotic pressure of a solution. If the osmotic pressure of a solution containing 5.00 g of polymer in 1.00 L of benzene is 42 mmHg (T = 25.0 °C) what is the molar mass? %3D O 8.6x10 g/mol O 3.1x10 g/mol O 1.9x104 gimol O 2.2x10° g/mal 10:31 AM 11/16/2021 COA FA Sacksoc 24 4. E R S D K G aps Lock A B N Alt Ctri Alt « Home Fn
Subject: chemistry
What is the vapor pressure at 25.0 ºC of a solution that has 12.45 g of urea, CO(NH2)2, dissolved in 250 mL of water? The vapor pressure of water at 25 ºC is 23.76 mm Hg.
The freezing point of benzene CGH6 is 5.50°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in benzene is DDT. How many grams of DDT, C14H,Cl5 (354.5 g/mol), must be dissolved in 207.0 grams of benzene to reduce the freezing point by 0.400°C ? Refer to the table for the necessary boiling or freezing point constant. Formula | K, (°C/m) Kf(°C/m) Solvent Water H20 0.512 1.86 Ethanol CH;CH,OH 1.22 1.99 Chloroform CHC13 3.67 Benzene CH6 2.53 5.12 Diethyl ether CH;CH,OCH,CH3 2.02 g DDT.
The vapor pressure of water at 25oC is 23.8 mmHg. 4.57g of glucose, C6H12O6, was dissolved in 25 grams of water at this temperature. What is the vapor pressure of this solution?
The vapor pressure of chloroform is 173.11 mm Hg at 25°C. How many grams of estrogen (estradiol), C18H2402, a nonvolatile, nonelectrolyte (MW 272.4 g/mol), must be added to 281.4 grams of chloroform to reduce the vapor pressure to 168.89 mm Hg ? chloroform CHCI3 = 119.40 g/mol. g estrogen
The vapor pressure of benzene, C6H6 is 100.0 torr at 26.1 °C. How many moles of a nonvolatile solute must be added to 100.0 mL of benzene to decrease its vapor pressure by 10.0% at that temperature? The density of benzene is 0.8765 g/mL.
Use the References to de The vapor pressure of ethanol is 54.68 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in ethanol is estrogen. Calculate the vapor pressure of the solution at 25 °C when 12.99 grams of estrogen, C18H2402 (272.4 g/mol), are dissolved in 159.9 grams of ethanol. ethanol = CH3CH2OH = 46.07 g/mol. VP(solution) = mm Hg
The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C. How many grams of aspirin, C9HsO4, a nonvolatile, nonelectrolyte (MW = 180.1 g/mol), must be added to 218.9 grams of diethyl ether to reduce the vapor pressure to 456.11 mm Hg? diethyl ether = CH3CH₂OCH₂CH3 = 74.12 g/mol. Mass= Submit Answer Retry Entire Group No more group attempts remain