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. =
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 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.
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
The freezing point of ethanol CH3 CH₂OH is -117.30 °C℃ at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin. How many grams of saccharin, C7H5NO3S (183.2 g/mol), must be dissolved in 278.0 grams of ethanol to reduce the freezing point by 0.300 °C? Refer to the table for the necessary boiling or freezing point constant. Solvent Formula Kb (°C/m) Kf(°C/m) Water H₂O 0.512 Ethanol CH3 CH₂OH 1.22 Chloroform CHCl3 3.67 Benzene C6H6 2.53 Diethyl ether CH3 CH₂ OCH₂ CH3 2.02 Mass= || g 1.86 1.99 5.12