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Calculate the polarity index for the following mobile phase: n-hexane: chloroform: methanol (85:10:5).
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- The first photo is the Question and the second is the basis. Kindly write your solutions and explain pleaseHow do I solve thisWhat is the main concern with trying to distill azeotropic mixtures? Options: Specialized equipment is required, making separation expensive The components become explosive at high temperature, making separation unsafe The mixture will distill at a single temperature with a constant composition, making separation impossible There are no major concerns with distilling azeotropic mixtures The boiling points of the components are too similar, making separation impractical
- 1. Calculate the Coulombic (ionic) interaction energy between atoms for the C=O ∙∙∙H-N hydrogen bond in a peptide at a distance of 1.5Å in units of kJ/mol. Assume that the partial charge on O is −0.434, the partial charge on H is +0.417 and the permittivity of the protein environment is 6. 2. The dipole moment of an individual peptide group is approximately 3.46 D. Assuming that the dipoles line up linearly estimate the energy of interaction (in kJ.mol) of the hydrogen bond in Q1 using a dipole-dipole model.M Inbox Post Atte x M MyOpen xM MyOpen x S Petition f x O Watch the x Sy 2+2 - Ste x E My Home x * OWLV2 | x ngagenow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-take [References) Use the References to access important values if needed for this question. The boiling point of diethyl ether, CH3CH,OCH,CH3, is 34.500 °C at 1 atmosphere. K(diethyl ether) - 2.02 °C/m In a laboratory experiment, students synthesized a new compound and found that when 13.43 grams of the compound were dissolved in 216.3 grams of diethyl ether, the solution began to boil at 34.935 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? pt g/mol pt pt Submit Answer Try Another Version 2 item attempts remaining pt pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt Previous Next Email Instructor Cengage Learning | Cengage Technical Support 2$ 3 4 7 8. 9. W R Y UWhen 1.54 of a certain molecular compound X are dissolved in 55. g of benzonitrile (c,H,CN), the freezing point of the solution is measured to be - 17.8 °C. Calculate the molar mass of x. If you need any additional information on benzonitrile, 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. x10
- based on the conductivity results of glacial acetic acid, does acetic acid exist predominantly as ions or molecules?6) Which of the following molecules is hydrophobic / nonpolar A. B.) C. "H (_ H₂N- H A) H-J с /\ I. # H T H U=O NH₂ с Î · OH н H D. •C- N' H. H₂C ç HH H CH3 н E) None of these molecules are hydrophobic H C-OH H ال ہے H C/OHwhat is the mole fraction of cyclohexane in the solution ? information is in the paper
- Penform the following and give your answer with the proper number of Saif.figs 0.0202 ÷ 4.50(2.3x10³)What is “the hydrophobic effect” and why it is so important to the molecular recognition and supramolecular chemistry?Determine the mole fraction of p-dichlorobenzene dissolved in 1.00L of cyclohexane that shifts the vapor pressure from 78mmHg to 70 mmHg. Can you determine the mass of solute dissolved?
