Exam 1
KEY
McLaughlin
Multiple Choice
#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Test 1
D
A
C
D
C
A
C
A
B
D
D
B
B
C
B
C
C
C
B
B
B
B
A
B
A
Test 2
A
B
C
D
C
D
A
B
D
D
B
C
B
C
B
A
C
C
C
B
B
B
A
B
A
Short Answers
1. Arrange the follow
Name:
Midterm examination 1
CHM40 FL 2015
SHOW THE WORK FOR CREDIT
NO AIDS ALLOWED EXCEPT A POCKET CALCULATOR AND THE INFORMATION ATTACHED TO THIS EXAM
Total Number of marks: Chapter 1
1. How many significant ﬁgures do the following numbers have (20 marks
Mid-term exam 2
CHM40 Fall 2015
Name:
Sum of all marks: 275
NO AIDS ALLOWED EXCEPT A POCKET CALCULATOR AND THE I
INFORMATION ATTACHED
SHOW THE WORK FOR CREDIT Potentially Useful Information
volume Ofa sphere = (4z’3)7zr3
surface area of a sphere 7: 4M2
ci
Exan13
CHM4O
Nov 2nd, 2015
No aids allowed except a pocket calculator.
Name
Sum of marks: 355 c) 1.00 kg SiOz is reacted with 0.80 kg C to give Si and C0 according to the following equation
(molar masses: Si: 28.1 g/mol, 0:16.00 g/mol, C: 12.01 g/mol)
Si0
18. Explain briefly why an ideal gas is a good approximation for a real gas at sufﬁciently high
temperatures and sufﬁciently low pressures. (20 marks) '
ngg g‘égfljvgt: icﬁxl fjﬁeéltcw
cm ml” 3c Ki cg ; w L}; 15. A solid 0.1375 g sample of solid Mg is bur