Download CH.4 Molar Relationships Test Questions

Chemistry
Molar Relationships
Released Test Questions
2000 – 2009
2000.35. What is the mass of one mole of S8?
25%
25%
25%
10
24
g
4.
8
X
25
7
32
.1
32
.1
m
g
g
32.1 mg
32.1 g
257 g
4.8 X 1024g
g
a.
b.
c.
d.
25%
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
2000.36. What is the mass of 2 moles of HgO?
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
15
16
43
3
21
7
14
25%
g
25%
g
25%
g
25%
32
3
108g
217 g
323 g
433 g
10
8g
1.
2.
3.
4.
17
18
19
20
2000.37 One mole of which of these compounds
contains two moles of hydrogen atoms?
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
25%
NH
3
25%
H
H2
S
25%
Na
O
CH4
H2S
NaOH
NH3
CH
4
1.
2.
3.
4.
25%
16
17
18
19
20
2000.38. A student has one mole of an unknown
compound in a test tube. The mass of the compound
is 58.5 g. The compound could be —
Cu
Cl
Ag
NO
3
l
En
t
er
a
ns
w
er
t
Na
C
CaCl2
NaCl
AgNO3
CuCl
ex
t..
.
1.
2.
3.
4.
25% 25% 25% 25%
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
2000.39.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
25%
14
25%
9
7
2
7
9
14
25%
2
1.
2.
3.
4.
25%
17
18
19
20
2000.40.
25% 25% 25% 25%
1. there was not enough
hydrogen to react with all
of the iodine
2. The hydrogen iodide was
reacting with the container
3. iodine loses its reactivity at
high temperatures
4. the reaction reached a
state of equilibrium
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
En
sw
an
r
te
e
Th
11
12
13
14
.
t..
ex
t
er
hy
15
en
og
r
d
di
io
de
di
io
16
w
ne
.. .
as
lo
s
se
r
its
ea
iv
ct
e
th
17
ity
ac
re
...
tio
n
18
d
he
ac
e
r
a
.
s..
19
20
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
25%
25%
16
17
18
25%
6.
2
25%
4.
6
3.0
4.0
4.6
6.2
3
a.
b.
c.
d.
4.
2000.41.
19
20
2000.42. Which of the following is not a base?
a.
b.
c.
d.
25%
Al(OH)3
Ca(OH)2
CaSO4
KOH
25%
3
)2
OH
H)
(O
l
A
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
(
Ca
15
16
25%
S
Ca
25%
O4
17
H
KO
18
19
20
2000.43. A sample of nitrogen gas is collected over
water at 20°C.The vapor pressure of water at 20°C is 18
mmHg. What is the partial pressure of the nitrogen if
the total pressure is 765 mmHg?
25% 25% 25% 25%
Hg
78
3
m
m
Hg
m
m
76
5
En
t
er
an
sw
74
7
m
m
te
er
Hg
18 mmHg
747 mmHg
765 mmHg
783 mmHg
xt
...
a.
b.
c.
d.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
2000.44. A gas has a volume of 50.0 cm3 at a B
temperature of 73°C.What volume would the gas occupy
at a temperature of 123°C if the pressure stays constant?
25%
25%
25%
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
3
cm
50
.0
37
.5
cm
3
5.
0
cm
3.
73
cm
1
3
3.75 cm3
5.0 cm3
37.5 cm3
50.0 cm3
3
a.
b.
c.
d.
25%
18
19
20
2000.45.
a.
b.
c.
d.
1.20 moles
1.86 moles
2.0 moles
12.0 moles
25%
ol
es
m
20
1.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
25%
86
1.
15
m
25%
es
ol
es
ol
s
e
ol
0
2.
16
25%
m
17
.0
12
18
m
19
20
2000.46.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
13
14
at
e.
...
w
he
p
to
se
a
lt
he
th
e
pu
sh
16
of
t
llo
ba
te
th
e
ea
se
in
cr
15
th
e
on
pe
m
th
e
n
si
ga
th
e
co
ol
12
fa
r
ra
t
ba
l
lo
ur
...
on
a. cool the gas in the balloon only
b. increase the temperature of the
water
c. push the balloon farther down
into the water bath
d. seal the top of the water bath
..
25% 25% 25% 25%
17
18
19
20
2001.14.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
16
g
25%
17
18
5
0.
18
5
15
25%
g
g
25%
1.
85
0.102 g
0.185 g
1.85 g
185 g
0.
10
2g
a.
b.
c.
d.
25%
18
19
20
2001.17. A solution contains 225 g of glucose, C6H12O6,
dissolved in enough water to make 0.825 L of solution.
What is the molarity of the solution?
25%
a.
b.
c.
d.
25%
25%
25%
0.66 M
0.97 M
1.03 M
1.52 M
66
0.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
M
97
0.
15
M
16
03
1.
17
52
1.
M
18
19
20
2001.24. How many milliliters of 2.00 M H2SO4 are
needed to provide 0.250 mole of H2SO4?
1.
25
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
L
25%
m
8.
00
m
x1
03
m
x1
01
m
12
5
1
25%
L
25%
L
25%
8.
00
125 mL
1.25 x 101 mL
8.00 x 103 mL
8.00 mL
L
1.
2.
3.
4.
16
17
18
19
20
2001.28.
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
32
.0
g
25%
g
g
8.
00
4.
00
1
25%
16
.0
4.00 g
8.00 g
16.0 g
32.0 g
25%
g
a.
b.
c.
d.
25%
19
20
2001.31.
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
25%
19
IV
2
25%
III
1
25%
II
I
II
III
IV
I
a.
b.
c.
d.
25%
20
2001.35. In the reaction 2SO2 (g)O2 (g) ⇔ 2SO3 (g),
which change would cause the greatest increase in the
concentration of SO3?
a. Decrease the
concentration of SO2
b. Decrease the
concentration of O2
c. Increase the concentration
of SO2
d. Increase the concentration
of O2
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
25% 25% 25% 25%
ra
nt
cr
De
11
12
13
se
ea
th
14
o
ec
.
t..
e
nc
e
as
e
cr
De
15
e
th
nc
co
t
tra
en
cr
In
ea
16
...
se
e
th
n
co
ra
nt
ce
cr
In
17
.
t..
ea
se
e
th
18
co
tra
en
c
n
ti.
19
.
20
2001.47. Which volume will be occupied by a gas
containing 6.02 x 1023 atoms at STP?
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
L
25%
L
25%
16
44
.8
11
.2
1.
0
1
25%
L
25%
22
.4
1.0 L
11.2 L
22.4 L
44.8 L
L
a.
b.
c.
d.
17
18
19
20
2001.50. The hydrogen ion concentration is 1 x 10-7.
What is the pH of this solution?
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
25%
14
25%
10
25%
7
1
7
10
14
1
a.
b.
c.
d.
25%
18
19
20
2002.8. The pH of a 0.1 molar aqueous solution of HCl
would equal ___
1.
2.
3.
4.
-1
1
11
13
25%
-1
1
2
3
4
5
25%
1
25%
11
25%
13
2002.17. Which of the following substances is a weak
electrolyte?
1
2
3
4
5
25%
D
25%
C
25%
B
A
B
C
D
A
1.
2.
3.
4.
25%
2002.18 Carbon disulfide is prepared industrially by reacting carbon with
sulfur dioxide according to the equation. If 5.9 moles of carbon react, how
many moles of CS2 are produced?
5C + 2SO2→CS2 + 4CO
1.
2.
3.
4.
25% 25% 25% 25%
0.077 moles
1.2 moles
1.5 moles
30 moles
0.
1
2
3
4
5
07
7
es
ol
m
1.
2
ol
m
es
1.
5
ol
m
es
30
es
ol
m
2002.27. When copper reacts with silver nitrate according to the equation, the
number of grams of copper required to produce 432 grams of silver is
Cu(s) + 2AgNO3(aq)→Cu(NO3)2(aq) + 2Ag(s)
1.
2.
3.
4.
31.5 g
127 g
216 g
252 g
25%
.
31
1
2
3
4
5
5
25%
g
12
7
25%
g
21
6
25%
g
25
2
g
2002.28. What is the final concentration if 50.0 mL of a
2.00M solution are diluted to 500.0mL?
2
3
4
5
00
M
25%
1.
40
20
0.
10
0.
1
25%
0M
25%
0M
25%
0.
0.100M
0.200M
0.400M
1.00M
0M
1.
2.
3.
4.
2002.37. How many liters of oxygen are required to produce 2
liters of water at STP? 2H2(g) + O2(g)→2H2O(g)
1.
2.
3.
4.
1
2
3
4
25%
1
1
2
3
4
5
25%
2
25%
25%
3
4
2002.40. The molar volume of an ideal gas in liters at STP is
6.02 X 1023 L
11.2 L
22.4 L
0.0821 L
2
3
4
5
L
L
21
08
0.
22
.2
11
23
10
X
02
6.
1
.4
L
25% 25% 25% 25%
L
1.
2.
3.
4.
2002.43. Which of these is about 2 moles?
1. 2.0 liter (dm3) of H2
2. 4.0 grams of H2
3. 2.0 X 1023
molecules of H2
4. 4.0 kilograms of H2
2
3
4
5
0
H2
ki
lo
gr
am
s
of
le
s
ec
u
4.
m
ol
23
10
X
2.
1
..
2
of
H
gr
am
s
0
4.
0
2.
0
lit
e
r(
dm
3)
o
fH
2
25% 25% 25% 25%
2003.16. Which of the following aqueous solutions will
cause litmus paper to turn red?
Base
Litmus
paper
changes
from
Blue
to
red
Does
not
chang
e
Red to
blue
N
1
2
3
4
5
25%
aC
l
25%
25%
25%
2O
Neutra
l
H
Acid
l
Solution
added
C
8-14
H
7
N
NaOH
NaCl
HCl
H2O
1-6
aO
H
1.
2.
3.
4.
pH
2003.21 A solution which has a concentration that exceeds its predicted
solubility at a certain temperature and pressure would be---
1.
2.
3.
4.
Unsaturated
Saturated
Supersaturated
Dilute
25% 25% 25% 25%
U
1
2
3
4
5
ns
ed
at
r
u
at
S
at
ur
at
ed
Su
p
s
er
ed
at
r
u
at
D
ilu
te
2003.26 What is the molarity of a solution prepared by dissolving 27.2g
of sodium chloride in enough water to prepare 500.0mL of solution?
2
3
4
5
1.
86
0
M
25%
0
93
5
0.
46
6
18
0.
1
25%
M
25%
M
25%
0.
0.186 M
0.465 M
0.930 M
1.860 M
M
1.
2.
3.
4.
2003.30.
1.
2.
3.
4.
Zn + 2HCl→ZnCl2 + H2
If 0.600 gram of zinc is used, what is the amount of
zinc chloride that is produced in the above reaction?
0.125 g
1.25 g
12.5 g
.018 g
25%
0
1
2
3
4
5
2
.1
5
25%
g
2
1.
5
g
25%
.
12
5
25%
g
1
.0
8
g
2003.43. What is the density of carbon dioxide at STP?
L
-1
g/
g/
L
10
.0
5.
09
X
46
.0
22
96
1.
g/
L
25% 25% 25% 25%
1.96 g/L
22.0 g/L
46.0 g/L
5.09 X 101 g/L
g/
L
1.
2.
3.
4.
1
2
3
4
5
1
2
3
4
5
25%
25%
25%
20
25%
10
2
5
10
20
2
1.
2.
3.
4.
5
2003.44. When magnesium metal (Mg) is burned, it forms MgO. How
many moles of oxygen gas (O2) are needed to burn 10 moles of Mg?
2003.45. Nitrogen gas is a diatomic molecule. What is
the mass of one mole of nitrogen gas?
1.
2.
3.
4.
7g
14 g
28 g
6 X1023 g
25%
7
g
25% 25% 25%
14
g
28
g
6
1
2
3
4
5
02
X1
3
g
2003.49. Ulcers are often caused by an excess of stomach acid. Milk
of magnesia is often used to soothe the irritation. Milk of magnesia is
probably---
An acid
A base
An indicator
A colloid
n
A
1
2
3
4
5
id
llo
co
A
ca
t
in
di
ba
A
ac
n
A
or
se
25% 25% 25% 25%
id
1.
2.
3.
4.
2004.2. How many grams of sodium chloride are required
to prepare 500.0 mL of a 0.100 M solution?
A.
B.
C.
D.
25%
1.46 g
2.93 g
29.3 g
58.5 g
46
1.
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
g
25%
93
2.
15
g
16
25%
.3
29
17
g
25%
.5
58
18
g
19
20
2004.10. How many grams of product Z will be formed if 12.0 g
of W react with 10.0 g of X to form 8.0 g of product Y in the
reaction shown?
A.
B.
C.
D.
25%
8.0 g
10.0 g
12.0g
14.0 g
0
8.
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
g
15
25%
.0
10
16
g
17
25%
25%
g
.0
12
.0
14
18
19
g
20
2004.16. The gas with the largest volume at STP is
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
25%
r
25%
10
.0
16
17
10
.0
gA
gK
r
e
10
.0
10
.0
1
25%
gN
10.0 g He
10.0 g Ne
10.0 g Ar
10.0 g Kr
gH
e
A.
B.
C.
D.
25%
18
19
20
2004.24. What is represented by the pH of a solution?
A. Partial pressure of
hydrogen ion in the
solution
B. Electronegativity of
dissociated hydrogen
ions in the solution
C. Concentration of
hydrogen ions in the
solution
D. Temperature of hydrogen
ions in the solution
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
16
g..
fh
yd
ro
og
..
hy
dr
of
d
tio
at
ur
n
eo
of
ty
ivi
15
Te
m
pe
r
Co
nc
en
tra
eg
at
ro
n
Ele
Pa
r
ct
tia
lp
re
ss
ur
e
of
h
yd
r. .
.
iss
. ..
25% 25% 25% 25%
17
18
19
20
2004.34. How many grams of nitrogen are
present in 2 moles of HNO3?
25%
25%
25%
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
28
2
14
1
2
14
28
1
A.
B.
C.
D.
25%
18
19
20
2004.42. How many moles of copper are
equivalent to 3.44 x 1023 atoms of copper?
A.
B.
C.
D.
0.571 moles
1.75 moles
5.41 x 1021 moles
5.41 x 1022 moles
25% 25% 25% 25%
ol
1
57
0.
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
es
m
es
ol
75
1.
ol
m
41
5.
15
16
1
02
x1
17
es
ol
m
41
5.
18
2
02
x1
es
m
19
20
2004.44. What is the molar mass of Al(No3)3?
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
ol
25%
21
3
g/
m
ol
25%
g/
m
g/
m
10
3
g/
m
57
1
25%
ol
25%
16
5
57 g/mol
103 g/mol
165 g/mol
213 g/mol
ol
A.
B.
C.
D.
18
19
20
2004.46. What is the mass in grams of one mole
of sulfur dioxide (SO)2?
A.
B.
C.
D.
48.1 g
64.1 g
80.1 g
96.1 g
25%
.1
48
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
g
25%
.1
64
15
g
16
25%
.1
80
17
25%
g
.1
96
18
g
19
20
2005.3. What mass of potassium hydroxide is required to react
completely with 2.70 g of sulfuric acid to produce potassium
sulfate and water?
25%
25%
25%
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
g
1.
54
g
2.
36
3.
09
4.
73
g
4.73 g
3.09 g
2.36 g
1.54 g
g
A.
B.
C.
D.
25%
17
18
19
20
N23H2 ⎯→ 2NH3
2005.15. If 6 liters of hydrogen gas are used, how many liters
of nitrogen gas will be needed for the above reaction at STP?
A.
B.
C.
D.
2 liters
3 liters
4 liters
12 liters
25%
it
2l
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
er
s
25%
it
3l
15
er
s
16
25%
it
4l
17
er
25%
s
rs
12
18
e
lit
19
20
2005.18. Formaldehyde (H2CO) reacts with oxygen to
form CO2 and H2O. How many moles of CO2 will be
produced from reacting 2 moles of H2CO with oxygen?
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
2
25%
1
25%
15
25%
25%
16
17
8
1
2
4
8
4
A.
B.
C.
D.
18
19
20
2005.19. Which pair of solutions would be acidic if mixed in
equal quantities?
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
d
C
B
16
25%
an
d
C
d
B
an
an
d
A
1
25%
D
25%
D
25%
an
A and B
B and C
B and D
C and D
B
A.
B.
C.
D.
17
18
19
20
2005.29. A container holds30.0 grams of neon gas. Under the same
conditions, how many grams of xenon would the container hold?
A.
B.
C.
D.
25%
108 g
131 g
262 g
370 g
8
10
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
g
25%
1
13
15
g
16
25%
2
26
17
g
25%
0
37
18
g
19
20
2005.30. In the combustion of ethane, how many
moles of CO2 can be produced from 1.00 of C2H6?
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
ol
es
4.
00
m
17
m
ol
es
ol
e
1.
00
m
ol
m
0.
50
00
1
2.
00
0.5000 mole
1.00 mole
2.00 moles
4.00 moles
e
A.
B.
C.
D.
25%
25%
25%
25%
18
19
20
2005.33. Which is the base in the reaction?
A.
B.
C.
D.
H2O
KOH
K+
H2SO4
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
18
19
20
2005.39. Which condition will cause a shift in the equilibrium
of the above reaction?
A. Double the concentration of
reactants and products
B. Increase the reaction
temperature
C. Reduce the concentration of
products and reactants by
10%
D. Keep the reaction
temperature constant
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
16
m
te
re
ac
tio
n
co
nc
th
e
Ke
ep
th
e
e
du
c
Re
15
pe
...
i..
en
tr
at
t..
.
io
n
ct
re
a
th
e
se
ea
In
cr
Do
ub
le
th
e
co
nc
en
tr
at
io
...
25% 25% 25% 25%
17
18
19
20
2007.3. What is the mass of a mole of Ca(OH)2?
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
gr
am
s
m
s
gr
a
17
11
4
74
gr
a
58
gr
a
57
1
m
s
57 grams
58 grams
74 grams
114 grams
m
s
1.
2.
3.
4.
25% 25% 25% 25%
18
19
20
2007.7. The equation shows the combustion of butane (C4H10).
How many moles of water can be produced by 12.5 moles of
C4H10 with excess oxygen?
1.
2.
3.
4.
25%
2.50 mol
62.5 mol
125 mol
202 mol
2.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
50
25%
ol
m
14
62
15
.5
25%
ol
m
1
16
25
17
25%
ol
m
2
18
02
ol
m
19
20
2007.13. What mass of nitrogen is required to react
with 16 grams of oxygen?
1.
2.
3.
4.
25%
2.8 g
5.6 g
14 g
56 g
2.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
8
g
14
25%
5.
15
6
g
25%
14
16
17
g
25%
56
18
g
19
20
2007.19. What is the molar mass of beryllium oxide (BeO)?
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
g/
m
ol
25%
g/
m
ol
25%
25
13
12
1
25%
g/
m
ol
25%
24
12 g/mol
13 g/mol
24 g/mol
25 g/mol
g/
m
ol
1.
2.
3.
4.
18
19
20
2007.25. If 5.0 moles of C3H8 react, how many
molecules of water are formed?
25% 25% 25%
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
16
25
10
2.
4
x
2
1.
8
4.
15
x
10
10
X
10
x
0
3.
1
25
24
3.0 x 1024
4.8 X 1024
1.2 x 1025
2.4 x 1025
24
1.
2.
3.
4.
25%
17
18
19
20
2007.43. What does pH measure?
1. Hydrogen ion
concentration
2. Hydroxide ion
concentration
3. Acid density
4. Base density
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
ns
i
ty
si
ty
yd
ro
x
id
e
B
as
e
de
de
n
A
io
n
n
io
2
H
ro
ge
n
yd
H
1
ci
d
co
co
nc
nc
en
e.
..
...
25% 25% 25% 25%
14
15
16
17
18
19
20
2007.47. A 0.67 L solution of ammonium sulfate,
(NH4)2SO4, contains 0.81 mole of the solute. What
is the approximate molarity of the solution?
1.
2.
3.
4.
25%
0.54 M
0.83 M
1.2 M
1.5 M
0.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
54
25%
M
0.
14
83
15
M
25%
1.
16
2
25%
M
17
1.
18
5
M
19
20
2007.50. NO2 and N204 undergo the reaction shown.
When a sealed container of NO2 reaches chemical
equilibrium, which must be true?
1.
2.
25% 25% 25% 25%
No N204 is present
No chemical reactions are
occurring
The rates of the forward
and reverse reactions are
equal
The maximum number of
molecules ahs been
reached
3.
4.
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
N
o
N
2
04
is
N
11
12
13
14
e
es
pr
o
e
ch
15
nt
ic
m
a
re
al
T
c
n.
tio
he
16
..
te
ra
s
of
e
th
T
17
rw
fo
he
m
...
ax
um
im
18
n
be
um
...
19
20
2008.4. The name of the salt formed by the neutralization
of hydrochloric acid and sodium hydroxide is
Sodium chloride
Sodium chlorate
Sodium chlorite
Sodium
hypochlorite
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
16
rit
e
hl
o
hy
po
c
ch
l
17
m
So
di
u
So
di
u
m
ch
l
m
So
di
u
15
or
it
te
or
a
or
id
ch
l
m
So
di
u
1
e
25% 25% 25% 25%
e
A.
B.
C.
D.
18
19
20
2008.7. A balloon is filled with 3.8 L of helium gas at STP.
Approximately how many moles of helium are contained
in the balloon?
25%
25%
25%
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
ol
m
85
72
m
0.
26
m
0.
17
1
m
ol
ol
0.17 mol
0.26 mol
72 mol
85 mol
ol
A.
B.
C.
D.
25%
18
19
20
2008.9. If 250.0 mL of a 0.96 M solution of acetic acid (C2H4O2) are
diluted to 800.0 mL, what will be the approximate molarity of the
final solution?
A.
B.
C.
D.
25%
0.19 M
0.24 M
0.30 M
0.77 M
19
0.
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
M
14
25%
24
0.
15
M
25%
30
0.
16
17
25%
M
77
0.
18
M
19
20
2008.19. What is the mass of one more of CO2?
A.
B.
C.
D.
24 g
28 g
44 g
56 g
25%
24
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
g
25%
28
15
25%
g
16
44
17
g
25%
56
18
g
19
20
2008.33. Which of the following solutions will have the greatest concentration?
A. 2 moles of solute dissolved
in 1 liter of solution
B. 0.3 mole of solute
dissolved in 0.6 liter of
solution
C. 2 moles of solute dissolved
in 10 liters of solution
D. 0.1 mole of solute
dissolved in 0.5 liter of
solution
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
ss
ol
di
te
so
lu
of
ol
e
m
0.
1
2m
15
...
v.
.
ss
ol
di
te
so
lu
of
es
ol
ol
e
m
0.
3
2m
ol
es
of
of
so
lu
so
lu
te
te
di
di
ss
ol
ss
ol
...
v.
.
25% 25% 25% 25%
16
17
18
19
20
2008.44. How many moles of hydrogen gas are produced
when 0.066 mole of sodium is completely reacted?
25%
25%
25%
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
H2
0.
09
9
m
ol
H2
ol
0.
06
6
m
ol
0.
03
3
m
ol
m
0.
02
2
1
H2
0.022 mol H2
0.033 mol H2
0.066 mol H2
0.099 mol H2
H2
A.
B.
C.
D.
25%
18
19
20
2008.46. A 1.0 M aqueous solution of which
substance would have the lowest pH?
A.
B.
C.
D.
NH3
HCI
Ba(OH)2
NaF
25%
I
HC
3
NH
1
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
25%
15
25%
(O
Ba
16
F
Na
2
H)
17
25%
18
19
20
2008.49. Phospohric acid, H3PO4, is neutralized by magnesium hydroxide,
Mg(OH)2, according to the equation shown. How many moles of water will
be produced from the neutralization of 0.24 mole of H3PO4?
2
3
4
5
6
7
8
9
10
11
12
21
22
23
24
25
26
27
28
29
30
31
32
13
14
15
16
17
18
m
ol
25%
1.
44
0.
48
0.
24
1
25%
m
ol
25%
m
ol
25%
0.
72
0.24 mol
0.48 mol
0.72 mol
1.44 mol
m
ol
A.
B.
C.
D.
19
20
2009.8. When 1 g of sodium chloride (NaCl) is placed in 100 g of
water, a solution results. Once the solution is prepared, water is
now considered what part of the solution?
25%
1.
2.
3.
4.
25%
25%
25%
Solid
Liquid
Solute
Solvent
l
So
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
id
Liq
15
d
ui
16
l
So
17
e
ut
l
So
18
n
ve
t
19
20
2009.18.
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
g
25%
32
.5
g
25%
3.
85
2.
55
1.
28
1
25%
g
1.28 g
2.55 g
3.85 g
32.5 g
g
1.
2.
3.
4.
25%
18
19
20
2009.24. What is the volume occupied by 51.0 g
of ammonia (NH3) gas at STP?
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
L
25%
91
.9
L
25%
67
.2
22
.8
0.
43
9
1
25%
L
0.439 L
22.8 L
67.2 L
91.9 L
L
1.
2.
3.
4.
25%
18
19
20
2009.39.
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
s
44
gr
a
m
s
25%
m
36
gr
a
m
18
gr
a
m
gr
a
16
1
25%
s
16 grams
18 grams
36 grams
44 grams
25%
s
1.
2.
3.
4.
25%
18
19
20
2009.42. When 80 g of sodium hydroxide, NaOH, are dissolved in
enough water to make 500 mL of solution, the molarity of the
solution is
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
25%
8M
25%
4M
25%
2M
1M
2M
4M
8M
1M
1.
2.
3.
4.
25%
18
19
20
2009.44. If the pH of a solution is 4, what is the pOH?
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
25%
10
25%
7
25%
6
0
6
7
10
0
1.
2.
3.
4.
25%
16
17
18
19
20
2009.49. The number of molecules in 48.0 grams of oxygen gas (O2) is
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
1.
81
x1
02
4
25%
x1
02
4
25%
1.
20
9.
03
6.
02
1
25%
x1
02
3
6.02 x
9.03 x 1023
1.20 x 1024
1.81 x 1024
x1
02
3
1.
2.
3.
4.
25%
1023
18
19
20