Stoichiometry

6/13/2011

CHM 092

Subtopics

CHEMISTRY A MOLECULAR
APPROACH
Chapter

13-30

2
3

66-71
97-77

2.3 Percent study of
compounds

3
12

100-104
530

2.4 Empirical and molecular formulas

3

82-83
105-110

2.5 Limiting reactants

4

128-139

2.6 Concentration of solutions

4

140-144

2.7 Solution stoichiometry

4

145

2.8 molality and mole fraction

STOICHIOMETRY

1

2.2 Mole Concept

CHEMICAL

Page No

2.1 Standard social building blocks of sum

CHAPTER 2

12

527-534

2

Prepared & redact by LHSim

Copyright ? 2011 Pearson Education, Inc.

The Standard Units
2.1 STANDARD UNITS OF
MEASURE

Tro: chemical science: A Molecular Approach, 2/e

3

Scientists have agreed on a set of
international standard units for comparing all
our measurements called the SI units
Système planetary = International System

Tro: Chemistry: A Molecular Approach, 2/e

4

1

6/13/2011

Mass

Measure of the amount of matter present in
an object
weight down measures the gravitational pull on an
object, which depends on its mass

SI unit = kilogram (kg)
about 2 lbs. 3 oz.

Commonly measure mass in grams (g) or
milligrams (mg)






1 kg = 2.



2046 pounds, 1 lb. = 453.59 g
1 kg = railway yard g = 103 g
1 g = 1000 mg = 103 mg
1 g = 0.001 kg = 10?3 kg
1 mg = 0.001 g = 10?3 g

Tro: Chemistry: A Molecular Approach, 2/e

any length unit cubed

Measure of the amount of space
occupied
SI unit = cubic mensuration (m3)
Commonly measure solid volume in
cubic centimeters (cm3)
1 m3 = 106 cm3
1 cm3 = 10?6 m3 = 0.000 001 m3

Commonly measure liquidness or gas
volume in milliliters (mL)

1 L = 1 dm3 = 1000 mL = 103 mL
1 mL = 0.001 L = 10?3 L
1 mL = 1 cm3

5

Temperature Scales
Fahrenheit scale, °F
apply in the U.S.

Tro: Chemistry: A Molecular Approach, 2/e

Kelvin

6

vs. Celsius

The sizing of a degree on the Kelvin scale
is the...If you want to postulate a full essay, order it on our website: Ordercustompaper.com



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