Barkley, Thane – Exam 1 – Due: Sep 20 2007, 11:00 pm – Inst: McCord
1
This
printout
should
have
26
questions.
Multiplechoice questions may continue on
the next column or page – fnd all choices
beFore answering.
The due time is Central
time.
McCord
11am
c
= 3
×
10
8
m/s
N
A
= 6
.
022
×
10
23
mol

1
h
= 6
.
626
×
10

34
J
·
s
ν
=
R
µ
1
n
2
1

1
n
2
2
¶
R
= 3
.
29
×
10
15
Hz
E
n
=

h
R
n
2
h
R
= 2
.
18
×
10

18
J
ψ
n
(
x
) =
µ
2
L
¶
1
2
sin
‡
nπx
L
·
n
= 1
,
2
,
···
E
n
=
n
2
h
2
8
mL
2
n
= 1
,
2
,
3
,
···

¯
h
2
2
m
d
2
ψ
d
x
2
+
V
(
x
)
ψ
=
Eψ
001
(part 1 oF 1) 10 points
Set(s) oF possible values oF
m
‘
are
A)

4;

3;

2;

1; 0; +1; +2; +3; +4
B)

3;

2;

1; 0; +1; +2; +3
C)

2;

1; 0; +1; +2
D)

1; 0; +1
E) 0
Select the best choice For
n
= 3.
1.
only E
2.
only D and E
3.
only C, D, and E
correct
4.
only B, C, D, and E
5.
only C
6.
only A
7.
only B
8.
only D
9.
A, B, C, D, and E
Explanation:
±or any value oF
n
, the possible values oF
‘
range From 0 up to (
n

1).
In turn, For
any value oF
‘
, the possible values oF
m
‘
range
From =

‘
, ..., 0, .
.., +
‘
. Since
n
= 3,
‘
can
be 0, 1, or 2. ThereFore
when
‘
= 2, C)
m
‘
=

2;

1; 0; +1; +2
when
‘
= 1, D)
m
‘
=

1; 0; +1
when
‘
= 0, E)
m
‘
= 0
002
(part 1 oF 1) 10 points
Which has the greatest number oF hydrogen
atoms?
1.
100g oF a substance that is 2% H by mass
2.
5 g oF an unknown compound
3.
20 g oF hydrogen gas
correct
4.
10
20
hydrogen atoms