Chp2_Osmotic - Osmotic Pressure Example Ex 2.52 p 57 for...

Info icon This preview shows page 1. Sign up to view the full content.

Osmotic Pressure Example Ex: 2.52, p. 57 for statement of the problem. 1.5 g of enzyme in a 5.00 mL aqueous solution. = 0.213 atm at 25º C. Determine the molar mass of the enzyme. RT M c is our tool of choice. Note that i = 1 for a non-electrolyte (doesn’t break up into ions). L mol K K mol atm L atm RT M 3 1 1 10 71 . 8 298 0821 . 0 213 . 0 This is the concentration of a sample whose actual “size” or volume is 5.00 mL.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: In that 5.00 mL therefore are: enzyme mol mmol mol mL mmol mL 5 3 10 35 . 4 1000 1 10 71 . 8 00 . 5 . That is to say, that 4.35e–5 mol of enzyme has a mass of 1.50 g ( vide supra ). The molar mass is nothing other than the ratio of the mass to number of mols, viz. mol g mol g M m / 10 45 . 3 10 35 . 4 50 . 1 4 5...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern