CHEM 1001/CHM 1020/ Chm1025C/CHM1032C Name:___ Answers ____
Module
Five Sample Pretest
You may use a
periodic chart.
Module Five Part I: Chemical
Equations & Stoichiometry (Chap 8, 9, 10)
A._____(05) Molecular Mass Calculation-Section 9.3
B._____(05) Mole Calculations-Sections 9.2, 9.4
C._____(05) Percentage Composition Calculation-Section 9.7
D._____(05) Empirical Formula
Calc. from % Comp-Section 9.8
E._____(05) Basic Stoichiometric Definitions-Chapter 8, 9,& 10
F._____(20) Balancing Chemical Equations by Inspection-Sections 8.2-8.3
G._____(05) Predicting Single Replacement Products . Sections 8.7-8.8
H._____(05) Predict Double Replacement & Neutralization Reactions Sections 8.10 & 8.11
I.______(10) Mole-Mole Problems Sections 10.1-10.2
J._____ (10) Mass-Mass Stoichiometric Problems-Sections 10.3 & 10.4
M._____(10) Multiple Choice Chapters 8, 9, & 10
______(85)
Total = ______%
Module
Five-Part A: Molecular
Mass Calculation (Section 9.3) 5
points
1. Calculate the
molecular mass of Acetic Acid, HC2H3O2.
ANSWER:
2. Calculate the
formula unit mass of Ammonium Chromate,
(NH4)2CrO4 .
ANSWER
3. Calculate the
molecular mass of glucose,
C6H12O6.
ANSWER
Sample Homework Problems p 247
#13-16