Exam 1 Chem 200 Practice Exam.pdf

# Exam 1 Chem 200 Practice Exam.pdf - Exam 1 Fall 2004...

• Test Prep
• 4

This preview shows page 1 - 2 out of 4 pages.

1 Exam 1 CHEMISTRY 200 100Points Fall, 2004 Name________________________________________________ SHOW YOUR WORK FOR FULL CREDIT!!!! Helpful hints: 453.59 g/pound, 1.0567 qt/liter, 1 kg = 2.20 lb, 16 ounces = 1 lb, 2.54 cm/in., 1 ounce = 28.4 g, 1 inch = 2.54 cm, 1 mile = 1.609 km. 1. If there are 2.62 10 22 atoms in 1.00 g of sodium and they are lined up side by side, what is the length of the line of sodium atoms in miles? Assume that the atoms are spheres of radius 0.186 nm. (10) 2. You discovered a piece of matter that looks like gold, d = 19.28 g/cm 3 , but may be fool's gold, d = 5.02 g/cm 3 . The sample mass is 112 grams. When placed in a graduated cylinder containing 35.8 mL of water, the water level rises to 41.6 mL. Calculate the density of the sample and identify it. (5) 3. An aluminum foil package contains 95 ft 2 of foil and the foil has a weight of 26.0 ounces. The density of aluminum is 2.70 g/cm 3 . Calculate the thickness of the foil in mm. (15)

Subscribe to view the full document.

2 4. You can identify a metal by carefully determining its density. A 0.608 g piece of an unknown metal is 0.367 cm long, 0.552 cm wide, and 0.250 cm thick. What is the identity of the element? (10) 5. A comfortable hot-tub temperature is 100.0
You've reached the end of this preview.
• Fall '16
• Dr. Behrang Madani

{[ 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