2010F_chem_125_exam_1--44gt60xxherehia

2010F_chem_125_exam_1--44gt60xxherehia - Chem 125 Exam#1...

Info icon This is a preview. Sign up to view the full content.

View Full Document Right Arrow Icon
Chem 125 Exam #1 Fall 2010 Ellis PART A. (4 Points each) 1. 5A + 3B 6C + 8D. How many moles of A are required make 1.63x10 -3 moles of D? 2. A sheet of Gold (like a piece of paper; only it's gold) 11 inches by 11 inches has a mass of 0.0215 g. What is the average thickness of the sheet of gold? Possibly useful information: The density of gold is 19.3 g/cm 3 and 1 in = 2.54 cm. a. 1.43 x10 -6 cm b. 1.60x10 -5 cm c. 3.99 x10 -5 cm d. < 10 -6 cm e. > 10 -4 cm
Image of page 1
Image of page 2
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