### CHEM 1001/CHM 1020/CHM 1025C/CHM 1032C Name: ___________________

### Module 2 Sample Pretest Part F Unit Analysis Problems 10pts

Please use the Unit Analysis or Dimensional Analysis method
to solve ONLY TWO of the following word problems:

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1. An oxygen molecule travels 975 mi/hr at room temperature. There are 5280
ft = 1 mi; 12 in = 1 ft, 2.54 cm = 1 in, 1.6 km = 1 mi, and 3600 sec = 1 hr.
What is the velocity in meters per second?

2. If one gram is equal to 15.4 grains. How many 5.00 grain aspirin tablets
may be made from 1.00 kilogram of aspirin?

3. A parsec is the distance light travels in 3.26 years. Given the velocity
of light, 3.00 x 10^{8} m/sec, how many kilometers does light travel in
one parsec?

4. I have 1400 radio programs I want to put on an Apple Ipod. Each program
requires 5 megabytes of disk space. If there are 1024 megabytes in a gigabyte.
How many gigabytes of disk space do I need minimum to store all my programs on
the IPod. The Mini-Ipod holds only 4 gigabytes of recordings, could I use a
mini for my project?

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Link to Setup and Answer
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Analysis Main Menu