{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Experiment 7 lab report

Experiment 7 lab report - Experiment#7 Vapor Density and...

This preview shows pages 1–2. Sign up to view the full content.

Experiment #7 Vapor Density and the Ideal Gas Law By: Jaimin Patel, Heba Ahmad October 15, 2009 Introduction In this experiment, we are determining the element by its molecular mass. This experiment consists of using the ideal gas laws equation: PV = nRT. (Pressure x volume = number of moles x R (0.08206) x temperature). We replaced the number of moles, with the calculation of mass/molar mass. Therefore the equation looks something like this: PV = (m/M) RT M = mRT/PV Procedure Heat ½ liter of tap water in a 1L beaker. Clean and dry a 250mL Erlenmeyer flask. Cover the top of the flask with an aluminum foil. Use just enough aluminum foil so that the top of the flask is covered. Use a copper wire as a twist-tie to hold the aluminum foil. Weight the flask with the copper and aluminum. Record the mass. Unscrew and remove the lid, and place 3-4mL of unknown substance in the beaker. Cover the flask back up with the aluminum foil. With a pin, make a tiny hole in the aluminum foil. Clamp the 250mL flask and immerse it in the heating water. Try and immerse it so that only the foil part sticks out of the water. If necessary add more water. This decreases an error. Continue boiling until the entire unknown has vaporized. It will escape from the hole.

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

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern