Procedure 1 Fill a dry styrofoam coffee cup calorimeter inner cup with 100mL of

Procedure 1 fill a dry styrofoam coffee cup

This preview shows page 4 - 5 out of 5 pages.

Procedure: 1. Fill a dry styrofoam “coffee cup” calorimeter (inner cup) with 100mL of distilled water at standard room temperature.
Image of page 4

Subscribe to view the full document.

2. Fill a dry beaker (outer cup) with 100mL of distilled water at standard room temperature. 3. Theoretically calculate the required mass of NH4Cl to transfer enough thermal energy for the desired outcome (listed above). 4. Prepare the stopwatch setting on the Labquest 2 system. 5. Place a thermometer in the inner cup and record the initial temperature of system. 6. Add 20 grams of NH4Cl to the 100mL of water in the beaker (outer) and immediately start the timer. 7. Stop the time once the system temperature is decreased by 5 C. Record time and mass of NH4Cl in the Labquest 2 system. 8. Repeat steps 4-8 for 5 separate trials with different masses of NH4Cl in increments of 2 grams (with 20 grams as the median value). Safety: Ammonium nitrate is flammable and/or explosive when in contact with combustible material. Please be advised not to allow the salt to become contaminated with organic matter. Therefore students will not use Ammonium nitrate.
Image of page 5
  • Fall '14
  • Pell, Wendy

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

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes