# CHM 2045C: Spring Term 2008 Practice Final (Spring 1998's Test) Module Two

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## Question 1

How many significant digits are in the length measurement 0.100 meter?

a) 1
b) 2
c) 3
d) 4

## Question 2

One gram of gold contains 3,060,000,000,000,000,000,000 atoms. Express this number of gold atoms in scientific notation.

a) 3.06 X 1020
b) 3.06 X 1021
c) 3.06 X 1022
d) 30.6 X 1020
e) 30.6 X 1021

## Question 3

Add 5.0 X 104 to 2.0 X 103 and express the sum using calculator notation.

a) 1.0 EO3
b) 2.5 EO3
c) 2.5 EO4
d) 5.2 EO3
e) 5.2 EO4

## Question 4

Which of the following terms is a unit of metric mass?

a) centimeter
b) gram
c) milliliter
d) second
e) none of the above

## Question 5

Which of the following terms is a unit of metric volume?

a) centimeter
b) gram
c) milliliter
d) second
e) none of the above

## Question 6

What is the symbol for the metric unit microliter?

a) cL
b) mL
c) ML
d) u L
e) none of the above

## Question 7

What is the name corresponding to the metric symbol dg?

a) decagram
b) decigram
c) dekagram
d) demigram
e) none of the above

## Question 8

According to the metric system, 1 m = 1000_____.

a) km
b) Mm
c) mm
d) nm

## Question 9

What is the freezing point and boiling point of water on the Kelvin scale?

a) 0 K and 100 K
b) 0 K and 273 K
c) 100 K and 273 K
d) 100 K and 373 K
e) 273 K and 373 K

## Question 10

Isopropyl alcohol ( rubbing alcohol ) freezes to a solid at -1290 F. What is the freezing point temperature on the Celsius scale?

a) -2900C
b) -2000C
c) -1030C
d) -900C
e) -540C

## Question 11

Which of the following terms defines the amount of mass in a unit volume?

a) specific gravity
b) specific heat
c) temperature
d) density
e) kilogram

## Question 12

Which of the following is the basic unit of mass in the metric system?

a) gram
b) liter
c) meter
d) second
e) none of the above

## Question 13

A U.S. Patriot missile has a velocity of 1032 m/s (Mach 3). What is the velocity of the missile in miles per hour? (Given: 1 mi = 1.61 km and 1 h = 3600 s)

a) 178 mi/h
b) 461 mi/h
c) 2310 mi/h
d) 5910 mi/h
e) 2.31 X 106mi/h

## Question 14

The average distance from the earth to the sun is 1.50 X 108kilometers. Express the distance in centimeters. (Given: 1km = 1000m, and 1m = 100cm)

a) 1.50 X 102cm
b) 1.5 X 107cm
c) 1.50 X 109cm
d) 1.50 X 1011cm
e) 1.50 X 1013cm

## Question 15

Magnesium is one of the least dense elements ( d = 1.74 g/cm3). What is the volume of a 10.0 g sample of the metal?

a) 5.75 cm3
b) 10.0 cm3
c) 17.4 cm3
d) 57.5 cm3
e) 174 cm3

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