Key

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__________________________
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Chemistry —
The
Worksheet
State
Gaseous
Period:
Date:
Name:
rc
while keeping
and
the same, whereas Avogadro’s law compares
and
while keeping Pv u
1. The Law of Gay-Lussac compares
oi(
and
\Iq)l UVrb
and
.-
k
2
,
I41?.k
—
the same.
2. The three laws that express a direct relationship are:
I
CLLf,S’c
a.
k
a
j
c. 4v04g,SYOS
)
1,4ev
?
b. 7W %
‘
I
The one law that expresses an inverse relationship is:
L&
u
1
i:
a.
2. If 5.OOg of 02 gas has a volume of 7.201 at a certain temperature and pressure, what volume does 15.Og of 02
have underthe same conditions?
ç
.
Answer:
7o
L
&‘I.’
.—--—.
‘
-
‘I
*__.jx_
_
3. If 1O.OOg of nitrogen gas has a volume of 15.01 at a particular temperature and pressure, what volume will
1O.OOg of oxygen gas occupy at the same temperature and pressure?
=
iDoD t2 /zOZi/,_L
3?
L
: ‘
13.1
Answer:
1cQL.
L
:
‘c
:T;z
s
:3r:f
temperature and pressure, what volume will
a
particular
4. If 10.00 moles of nitrogen gas has a volume of 15.OL at
10.00 moles of oxygen gas occupy at the same temperature and pressure?
lc.L)
Answer:
1
t-
I
j
Vo
b-4A-
e
Ps1s%’,o
.
#
l
L4’:
(c
-s)
‘:;
5. If an amount of gas in a fixed volume has a pressure of 2.5Oatm at 320.K, what is the pressure of the gas (in
fAe4%)
atm)at520.K?
&L
I
—. —
P
.
T
atm
b
Answer:
t
3Z3k
P
6. Calculate the following missing information:
Initial: V = 25.OL, n = 2.OOmoI, T = 300.K, P = 1.97tm
I
FinalV=3OOL,n=2OOmol,T=275K,P=atm
a.
II
)%
rL
“-‘*-
,
“
Is 97 J’
(.%LiI%
3
.1
::
f.
?
4
zT+k
___
(%_
b
‘1 )
34
2b
0C2.1’c)
Initial V=4 501, n = 675mo1,T= 15 0°C, P=3 S5atm
Final: V = ? L, n = .800mol, T = 22.0°C, P = 4.25atm
j,
7. Using the combined gas law, if the pressure and number of moles don’t change between the initial and final
P1
I
-4”OJftt
conditions, the combined gas law just reduces down to
Law.
‘
8. A 6.50g sample of a gas has a volume of 5.001 and a pressure of 1.OOatm at 300.K. What is the molar mass of
the gas?
,‘I1
:.o
Answer:
j;oo
‘
‘
(l.ooR+m.Zcroo)
g/mol
e
/
9. In order for a gas to behave “ideally”, the volume (size) of the individual gas particles must be
4
4iA
(f
‘3 2 0
Wb#I_
compared to the volume of the container.
10. Temperature is a measure of the average
gas.
at
of the molecules in a sample of
c,
11. The kinetic molecular theory of gases proposes that the observed pressure of a gas arises from
C lb
i
s
of the gas molecules with the wall of their container.
12. In order for a gas to behave “ideally”, kinetic molecular theory suggests that gas particles exert
/1
attractive or repulsive forces on each other.
13. A sample of oxygen gas is collected over water. The total pressure of gas collected was 772torr at 27.0°C. If
the vapor pressure of water at 27.0°C is 26.7torr, what is the partial pressure due to the oxygen (in torr)?
I
Answer:
71. 3 (-7Yc)
7qç3+rw-
torr
14. A mixture of gases contains 5.23g of N
2 and 4.41g of 02. What volume (in liters) does this mixture occupy at
25.0°C and 1.OOatm pressure?
p
,,
,
o74frC
:
32 0
.
Answer:
.7
qq
ir
‘I
V
‘
‘.
‘i” 2 1/.....
15. Carbon dioxide gas, in the dry state, may be produced by heating calcium carbonate:
) + CO2(g)
5
() CaO(
3
CaCO
What volume of COb collected dry at 55.0°C and a pressure of 774 torr, is produced by complete thermal
decomposition of 1O.Og of CaCO
?
3
q qq i -e Cot..
\
, ,
Answer:
;, 6 ‘1
.
L
1/;bdC
V
n
rr
3
I h,..LCA.C0
I
( o ‘i ( 9 e f
-
..
2. (oY L
¶X:!’
(fQI?+W:)
çlc
I
)

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