**CHM 2045C Module Two Sample Exam **

**Module Two-Part F: Unit Analysis
Problems 10 points**

Apply the unit analysis method of
problem solving to each of the following (setup statement 1 pt, unit analysis
setup 3 pts, answer 1 pt with its proper unit)( If greater than
three significant figures round off to three significant figures):

(1) How many karats
is a diamond weighing **234.2 mg**? (**One
karat = 0.200 g**)

(2) Insurance
statistics state that a person loses **8
minutes of average life for each cigarette smoked**. If there are **20 cigarettes in a pack** and the **average cost of cigarette is $4.50 per pack** over the next 15 years,
how many years of average life would a person lose for smoking **1.5 packs a day** for **15 years**?

**Module
Two-Part H: Density, Specific Gravity & Volume Problems 08 points**

1. A quartz rock was
cut into a rectangular solid paperweight.
IF the paperweight has a mass of **165
g** and measures **5.00 cm by 5.00 cm by
25.0 mm**, what is its volume in cubic centimeters?

2. Calculate the density in g/mL for **10.0 grams** of ethyl ether having a **volume 14.0 mL**.