WA06_CHE-121-mar14 - Thomas Edison State College General...

Info icon This preview shows pages 1–3. Sign up to view the full content.

Thomas Edison State College General Chemistry I with Labs (CHE-121) Section no.: OL009 Semester and year: May 2015 Written Assignment 6: Gases Answer all assigned questions and problems, and show all work. 1. A gas occupying a volume of 725 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume? (5 points) P1=0.970 P2=0.541 V1=725ml V2=1300ml (P1)(V1) = (P2)(V2) (0.970atm)(725ml) = (0.541atm)(V2) (0.970atm)(725ml)/(0.541atm) = 1299.907ml = 1300ml (Reference: Chang 5.19) 2. The volume of a gas is 5.80 L, measured at 1.00 atm. What is the pressure of the gas in mmHg if the volume is changed to 9.65 L? (The temperature remains constant.) (5 points) (1.00atm)(5.80L) = (P2)(9.65L) 5.80L/9.65L = 0.601atm = (0.601)(760) = 456.788mmHg (Reference: Chang 5.21) 3. Why is the density of a gas much lower than that of a liquid or solid under atmospheric conditions? What units are normally used to express the density of gases? (5 points) There are much weaker intermolecular forces between gas molecules. Gas molecules are separated by distance that are larger compared to their size. (Reference: Chang 5.30) 1 Copyright © 2014 by Thomas Edison State College. All rights reserved.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

4. A sample of nitrogen gas kept in a container of volume 2.3 L and at a temperature of
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the 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