CHBE 2100 Exam 2 Fall 2010
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School
Georgia Institute Of Technology *
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Course
2100
Subject
Chemistry
Date
Dec 6, 2023
Type
Pages
13
Uploaded by EarlCaterpillarMaster878
____
CHBE 2100
Exam
I
page
1/13
ChBE 2100
Chemical Process Principles
Fall 2010
Exam
II
There are 4 problems, each
worth
a different
number
of
points.
There
are
some
tables
at
the end
of
the
exam that you
may
find useful. Please read the questions carefully.
This exam is closed-book. However, you are allowed
one
8.5" x 11" piece
of
paper
(one side only) with
any information
you
want
on
it.
These
notes
must
be
your
own and
may
not be copied from
another
person. All other relevant information is provided.
The use
of
wireless devices (e.g. cell phones,
IR
transmitters/receivers) is not permitted.
The
use
of
programmable calculators is only allowed if all relevant content has
been
erased
from
the
calculator
memory
and the
programmable
features are
not
used.
To
receive full credit on
each
problem, it is advised to start with
the
appropriate full form
of
the
balance
equation(s)
needed
to
solve
the
problem. Label all variables and equations. Include a brief word
description
to
explain each
step
in
your
problem
if
appropriate.
State
all
your
assumptions
clearly.
Present
your
solution clearly. Numerical answers
without
units
or
explanations
will not receive credit.
Name:
----------:---------
(Please write
your
name
on
the
back
of
the
last page
of
the
exam
too)
The
work
presented here is solely
my
own. I did not receive
any
assistance
nor
did I assist
other
students during
the
exam. I pledge that I have abided by
the
above
rules and
the
Georgia
Tech
Honor
Code.
Signed:
_
Problem 1
_____
/30
Problem 2
____
--:/20
Problem 3
____
--:125
Problem 4
--:/25
Total
____
--:/100
CHBE
2100
Exam
I
page
2/13
Problem 1 (30 points)
(a)
(4
points) A vessel contains
only
ethyl acetate
at
a
temperature
of
25°C
and
a
pressure
of
90
mmHg.
Under these conditions, is
the
ethyl acetate a liquid, a vapor,
or
both?
You
must
justify
your
answer
with
an explanation/calculation (Answers without explanation/calculation will receive no credit).
liquid
vapor
both
(b)
(4
points) A vessel contains only ethylene
at
a
temperature
of
-60°F
and a pressure
of
200
psia.
Under
these conditions, is
the
ethylene a liquid, a vapor,
or
both?
You
must
justify
your
answer
with an
explanation/calculation (Answers
without
explanation/calculation will receive
no
credit).
liquid
vapor
both
(c)
(4
points) A vessel contains a mixture
of
water,
MIBK
and
acetone
at
a
temperature
of
25°C
and a
pressure
of
1 atm. This
mixture
has
separated into
two
liquid phases.
One
of
the liquid
phases
contains
85
wt%
water.
What
is the percent acetone in the
other
liquid
phase?
You
must
justify
your
answer
with
an explanation/calculation (Answers
without
explanation/calculation will receive
no
credit).
-~~~_%
CHBE
2100
Exam
I
page
3/13
(d) (15 points) A vessel with a volume
of
0.10 m
3
contains a 2.0 kg
of
water, some
of
which
is
liquid and
some
of
which
is
vapor. The pressure
is
80 psia. Calculate the
~Of
liquid water and the
~f
water vapor
in
the vessel (Hint: the water vapor
is
not
an
ideal gas).
\rotu~L.
~~s~
Mass
of
water vapor
=
kg
Volume
of
liquid water
=
m
3
(e)
(3
points) List three critical design considerations for the Alaska pipeline.
1.
2.
3.
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CHBE 2100 Exam I
page
4/13
Problem 2 (20 points)
A vessel contains
a
mixture
of
equimolar liquid benzene and liquid toluene that is in equilibrium with their
vapors and air. The temperature
of
the mixture is 40°C. The mole fraction of air
in
the vapor phase is
60%.
What are thNpressure and the mole fraction
of
benzene
in
the vapor phase?
-\-o-\a\
P=
mmHg
Ybenzene
=
_
CHBE 2100 Exam I
page
5/13
Problem 3 (25 points)
Propane
(C
3
H
a
)
is
burned at atmospheric pressure with 248% excess air. The fractional conversion of
propane
is
65%. There
is
no CO produced. Calculate the dew point temperature
of
the product gas (Hint:
carefully recall the definition of theoretical oxygen and excess air).
-----
°C
CHBE
2100
Exam
I
page
6/13
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-----
CHBE
2100
Exam
I
page
7/13
Problem 4 (25 points)
A hot-air dryer is used
to
reduce the moisture content
of
1500 kg/min
of
wet
wood pUlp from 0.75
kg
H
2
0
/
kg
dry pulp
to
0.15 wt% H
2
0.
Air is drawn from the atmosphere at 28°C,
760
mm
Hg (absolute), and
50% relative humidity, sent through a blower-heater, and then fed
to
the dryer.
The
air leaves the dryer at
ao°c
and 10 mm
Hg
(gauge). A sample
of
the exit air is drawn into a chamber containing a mirror and
cooled slowly, keeping the gauge pressure at 10 mm Hg. A mist is observed to form on
the
mirror at a
temperature
of
40.0°C. Calculate the mass
of
water removed from the pulp and the volumetric flow rate
of
air entering the system.
water removed
=
kg/min
air flow rate
=
m
3
/min
CHBE 2100 Exam I
page
8/13
CHBE
2100
Exam
I
page
9/13
10,000
~'''''''
,,,,:,,,,!,,
~
6,000
I···········b·········,······i .. '
+..:
,
....
•
...........
,
;.:
!
,
,
,
'bT
,.: ,.:
..
! , ' ,
,
!.
:.!.,.
..
; ,
,··,+'+···,··,·,·,·········H-!H:+b
!',
,!'!
.....
4,000
200
250
300
350 400
500
600
Acetone
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Table
11.4
Antoine
Equation Constants·
Table
B.4
(Continued)
•
10glO
P
=
A
-
B
T
+
C
p'inmmHg,
Tin
°c
Compound
Fonnula
RangeeC)
A
B
C
()
Example:
The
vapor pressure
of
acetaldehyde
at
25°C is determined as follows:
•
(0C)
00552
1600.017
9 5
10
810
PC2H,O
25
=
8.
-
25
+
291.809
=
2.
5 1
.:::::::;.
p~H,o(25°C)
=
IlY·
9SS1
=
902
mm
Hg
Compound
Formula
Range
(0C)
A
B
C
Ethylene
glycol
Ethylene
oxide
1,2-EthYlenediamine
Formaldehyde
Formic acid
Glycerol
It-Heptane
i-Heptane
C
2
Ht;02
Cl~O
C
1
H
g
N
2
HCHO
CH2~
C
J
H
S
0 3
n-C
7
H16
i -CJH
l6
50.0
to
200.0
0.3 to 31.8
26.5 to 117.4
-109.4
to
-22.3
37.4
to
100.7
183.3 to 260.4
25.9 to 99.3
18.5 to 90.9
8.09083
8.69016
7.16871
7.19578
7.58178
6.16501
6.90253
6.87689
2088.936
2005.779
1336.235
970.595
1699.173
1036.056
1267.828
1238V2
203.454
334.765
194.366
244.124
260.714
28.097
216.823
219.783
I
OJ
m
I\.)
......
a
a
m
><
ro
3
Acetaldehyde
C
2
H
4
O
-0.2
to 34.4
8.00552
1600.01~\
291.809
I·Heptene
C7H1•
21.6 to 94.5
6.91381
1265.110--
220.051
Acetic acid
C2Ii402
29.8
to
126.5
7.38782
1533.313
222,309
n-Hexane
n-Q;H
,
•
13.0 to 69.5
6.88555
1175.817
224.867
Acetic
acid·
C
2
H.02
o
to 36
7.18807
1416.7
225
i-Hexane
i-Q;H
'4
12.8 to 61.1
6.86839
1151.401
228.477
Acetic anhydride
Acetone
C.~03
C3~O
62.8 to 139.4
-12.9
to 55.3
7.14948
7.11714
1444.718
1210.595
199.817
229.664
I-Hexene
Hydrogen
Cyanide
Q;H
12
HCN
15.9 to 64.3
-16.4
to 46.2
6.86880
7.52823
1154.646
1329.49
226.046
260.418
Acrylic acid
CJ
H.02
20.0 to 70.0
5.65204
648.629
154.683
Methanol
CH
3
0H
14.9 to 83.7
8.08097
1582.271
239.726
Ammonia·
NH
J
-83
to
60
7.55466
1002.711
247.885
Methanol'"
CHJOH
-20
to
140
7.87863
1473.11
230.0
Aniline
Q;H
7
N
102.6
to
185.2
7.32010
1731.515
206.049
Methyl
acetate
C3H6
02
1.8 to 55.8
7.06524
1157.630
219.726
Benzene
Q;f4
14.5
to
80.9
6.89272
1203.531
219.888
Methyl
bromide
CfuBr
-70.0
to
3.6
7.09084
1046.066
244.914
n-Butane
n-C.HLO
-78.0
to
-0.3
6.82485
943.453
239.711
Methyl
chloride
CHJCl
-75.0
to 5.0
7.09349
948.582
249.336
i-Butane
i-c.H1
O
-85.1
to
-11.6
6.78866
899.617
241.942
Methyl
ethyl
ketone
C.HsO
42.8
to
88.4
7.06356
1261.339
221.969
I-Butanol
C.H1oO
89.2 to 125.7
7.36366
1305.198
173.427
Methyl isobutyl ketone
C6
H
12
0
21.7
to
116.2
6.67272
1168.408
191.944
2-Butanol
C.HIOO
72.4
to
107.1
7.20131
1157.000
168.279
Methyl methacrylate
CSH
S
02
39.2
to
89.2
8.40919
2050.467
274.369
I-Butene
C.Hs
-77.5
to-3.7
6.53101
810.261
228.066
Methylamine
CHsN
-83.1
to
-6.2
7.33690
1011.532
233.286
Butyric acid
C.~02
20.0
to
150.0
8.71019
2433.014
255.189
Methylcyclohexane
C
7
H
14
25.6
to
101.8
6.82827
1273.673
221.723
Carbon disulfide
C5I
3.6 to 79.9
6.94279
1169.110
241.593
Naphthalene
C,oHs
80.3 to 179:5
7.03358
1756.328
204.842
Carbon
tetrachloride
ca.
14.1
to 76.0
6.87926
1212.021
226.409
Nitrobenzene
Q;H
s
N0
2
134.1
to
210.6
7.11562
1746.586
201.783
Chlorobenzene
CsHsCl
62.0
to
131.7
6.97.808
1431.053
217.550
Nitromethane
CH
J
N0
2
55.7 to 136.4
7.28196
1446.937
227.600
ChIorobenzene·
CsHsCI
o
to 42
7.10690
1500.0
224.0
n-Nonane
n-yHzo
70.3
to
151.8
6.93764
1430.459
201.808
ChIorobenzene·
Q;HsCI
42 to 230
6.94504
1413.12
216.0
I-Nonane
yH
1S
66.6 to 147.9
6.95777
1437.862
205.814
Chlorofonn
CHCh
-10.4
to
60.3
6.95465
1170.966
226.232
n-Oetane
n-C
s
H18
52.9
to
126.6
6.91874
1351.756
209.100
Chloroform·
CHCh
-30
to
150
6.90328
1163.03
ZI1.4
i-Octane
i-C
8
H
l
8
41.7
to
118.5
6.88814
1319.529
211.625
Cyclohexane
Q;H
12
19.9
to
81.6
6.84941
1206.001
223.148
1-0etene
C
8
H 1
6
44.9 to 122.2
6.93637
1355.779
213.022
Cyclohexanol
CsHuO
93.7 to 160.7
6.25530
912.866
109.126
n-Pentane
n·C
sH
12
13.3
to
36.8
6.84471
1060.793
231.541
n-Decane
n-C
1
oH22
94.5
to
175.1
6.95707
1503.568
194.738
i-Pentane
i-CsH
12
16.3
to
28.6
6.73457
992.019
229.564
l-Decene
C
IO
H
20
86.8 to 171.6
6.95433
1497.527
197.056
I-Pentanol
C
s
H
12
0
74.7
to
156.0
7.18246
1287.625
161.330
1,1-Dich1oroethane
1,2·Dich1oroethane
Cz~Ch
C
2
H.a
-38.8
to 17.6
-30.8
to 99.4
6.97702
7.02530
1174.022
1271.254
229.060
m.927
1-Pentene
Phenol
CSH
10
C
6
H
6
O
12.8 to 30.7
107.2 to 181.8
6.84268
7.13301
1043.206
1516.790
233.344
174.954
Dichloromethane
CH2C
h
-40.0
t040
7.40916
1325.938
252.616
I-Propanol
C
3
H
s
O
60.2 to 104.6
7.74416
1437.686
198.463
Diethyl
ether
C.HIOO
-60.8
to
19.9
6.92032
1064.066
228.799
Diethyl
ketone
CsHIOO
56.5
to
111.3
7.02529
1310.281
214.192
Diethylene glycol
C.H
lO
O
2
130.0
to
243.0
7.63666
1939.359
162.714
Dimethyl
ether
C2H60
-78.2
to
-24.9
6.97603
889.264
241.957
Dimethylamine
C2
H7
N
-71.8
to
6.9
7.08212
960.242
221.667
N,N-Dimethylformamide
CJH7
NO
30.0
to
90.0
6.92796
1400.869
196.434
1,4·Dioxane
C.Rg
0 2
20.0
to
105.0
7.43155
1554.679
240.337
Ethanol
CzHsO
19.6
to
93.4
8.11220
1592.864
226.184
Ethanolamine
C
2
H
7
NO
65.4
to
170.9
7.45680
1577.670
173.368
Ethyl acetate
C.Hs~
15.6
to
75.8
7.10179
1244.951
217.881
Ethyl acetate
*
C.Rs°2
-20
to 150
7.09808
1238.710
217.0
Ethyl chloride
CzHsQ
- 55.9
to
12.5
6.98647
1030.007
238.612
Ethylbenzene
CsH
10
56.5
to
137.1
6.95650
1423.543
213.091
-
•Adapted
from
T.
Boublik,
V.
Fried,
and
E. Hala,
The
Vapour
Pressures
of
Pure
S'ubstances.
Else~ier,
AmSlerdam,1973.
If
marked
with
an
asterisk
(*),
constants are from
U1.nge's
Handbook
of
CheJnJStry.
2-Propanol
Propionic acid
Propylene oxide
Pyridine
Styrene
Toluene
1,1,1-nichloroethane
1,l,2-lfichloroethane
Trichloroethylene
Vinyl
acetate
Water·
Water·
m-Xylene
o-Xylene
p-Xylene
C
3
H
s
O
C3H
6
02
C
3
H
6
O
CsHsN
CsRs
C7Rs
CzH3
Cl
J
CzHJCh
CzHCh
C.Hs°2
~O
H
2
O
m-CSH
IO
o-CaH
1o
p-CsH1o
52.3
to
89.3
72.4 to 128.3
- 24.2
to
34.8
67.3
to
152.9
29.9
to
144.8
35.3 to 111.5
-5.4
to 16.9
50.0
to
113.7
17.8 to 86.5
21.8 to 72.0
o
to 60
60
to
150
59.2 to 140.0
63.5 to 145.4
58.3
to
1393
7.74021
7.71423
7.01443
7.04115
7.06623
6.95805
8.64344
6.95185
6.51827
7.21010
8.10765
7.96681
7.00646
7.00154
6.98820
1359.517
1733.418
1086.369
1373.799
1507.434
1346.773
2136.621
1314.410
1018.603
1296.130
1750.286
1668.210
1460.183
1476.393
1451.792
197.527
217.724
228.594
214.979
214.985
219.693
302.769
209.197
192.731
226.655
235.000
228.000
214.827
213.872
215.111
'0
ro
(Q
CD
......
0
--
......
91h
Edition, Handbook
Publishers,
Inc.,
Sandusky,
OH,
1956.
(continued)
W
--
Table
B.5
Properties of Saturated Steam: Temperature Table·
Table
B.5
(Continued)
~(rn3/kg)
O(kJ/kg)
"
H(kJlkg)
V{m
3
/kg)
O(kJlkg)
B(kJlkg)
(")
T("e)
0.01
2
4
6
8
P(bar)
0.00611
0.00705
0.00813
OJXl935
0.01072
Water
0.001000
0.001000
0.001000
0.001000
0.001000
Steam
206.2
179.9
157.3
137.8
121.0
zero
8.4
16.8
25.2
33.6
2375.6
2378.3
2~,81.1
2383.8
2386,6
+0.0
8.4
16.8
25.2
33.6
-.-
2501.6
2496.8
2492.1
2487.4
2482.6
2501.6
2505.2
2508.9
2512.6
2516.2
_.
__
~
70
72
74
76
78
,-
r
P{bar)
0.3117
03396
0.3696
0.4019
0.4365
Water
0.001023
0.001024
0.001025
0.001026
0.001028
5.045
4.655
4.299
3.975
3.679
Steam
293.0
301.4
309.8
318.2
326.4
Water
2469
2472
2474,
2476
2479
Steam
293.0
301.4
309.8
318.2
326.4
Water
2333
2329
2323
2318
2313
Evaporation
262IJ
2630
2633
2636
2639
Steam
I
OJ
m
N
-->.
o
o
m
x
Ql
3
10
12
14
16
18
20
22
24
25
26
28
30
32
0.01227
0.01401
0.01597
0.01817
0.02062
0.0234
0.0264
0.0298
0.0317
0.0336
0.0378
0.0424
0.0475
0.001000
0.001000
0.001001
0.001001
0.001001
O.lXHOO2
0.001002
0.001003
0.001003
0.001003
0.001004
0.001004
0.001005
106.4
93.8
&2.9
73.4
65.1
57.8
51.5
45.9
43.4
41.0
36.7
32.9
29.6
42.0
50.4
58.8
67.1
75.5
83.9
92.2
100.6
104.8
108.9
117.3
125.7
134.0
2389.3
2392.1
2394.8
2397.6
2400.3
2403.0
2405.8
2408.5
2409.9
2411.2
2414.0
2416.7
2419.4
42.0
50.4
58.8
67.1
75.5
83.9
92.2
100.6
104.8
108.9
117.3
125.7
134.0
2477.9
2473.2
2468.5
2463.8
2459.0
2454.3
2449.6
2444.9
2442.5
2440.2
2435.4
2430.7
2425.9
2519.9
2523.6
2527.2
2530.9
2534.5
2538.2
2541.8
2545.5
2547.3
2549.1
2552.7
2556.4
2560.0
80
82
84
86
88
90
92
94
96
98
100
102
0.4736
0.5133
0.5558
0.6011
0.6495
0.7011
0.7560
0.8145
0.8767
0.9429
1.0131
1.0876
0.001029
0.001030
0.001032
0.001033
0.001034
0.001036
0.001037
0.001039
0.001040
0.001042
0.001044
0.001045
3.408
3.161
2.934
2.727
2.536
2.361
2.200
2.052
1.915
1.789
1.673
1.566
334.8
343.2
351.6
360.0
368.4
376.9
385.3
393.7
402.1
410.6
419.0
427.1
2482
24M
2487
2489
2491
2493
2496
2499
2501
2504
2507
2509
334.9
343.3
351.7
360.1 '
368.5
377.0
385.4
393.8
402.2
410.7
419.1
427.5
2308
2303
2298
2293
2288
2282
2277
2272
2267
2262
2257
2251
2643
2646
2650
2653
2656
2659
2662
2666
2669
2673
2676
2679
34
36
38
40
42
44
46
48
0.0532
0.0594
0.0662
0.0738
0.0820
0.0910
0.1009
0.1116
0.001006
0.001006
0.001007
0.001008
0.001009
0.001009
0.001010
0.001011
26.6
24.0
21.6
19.55
17.69
16.04
14.56
13.23
142.4
lSO.7
159.1
167.4
175.8
184.2
192.5
200.9
24221
2424.8
2427.5
2430.2
2432.9
2435.6
2438.3
2440.9
142.4
150.7
159.1
167.5
175.8
184.2
192.5
200.9
2421.2
2416.4
2411.7
2406.9
2402.1
2397.3
2392.5
2387.7
2563.6
25672-
2570.8
2574.4
2577.9
25815
2585.1
2588.6
Equhalent
Values
Length
MIUl5
QUlll1tity
FACTORS
FOR
UNIT CONVERSIONS
1 kg
=
10()()
g
=
n.m1
metric
ton
=
2.~1)46~
Ibm
=
35-27392
oz
1
Ibm
=
16
oz
~
5
X
1()'4
ton'"
453.593
g
=
0.453593
kg
1
m
=
100
em
=
1000
Illin
=
10
6
microns
(fl.m)
=
lOW
angstrom.
(A)
=
39.37
in,
=
3.2808
It
=
\.0936
yd
=
0.(i0062]4
mile
1
rt
=
12
in.
=
1/3
yd
=
0.3048
m
=
3{),48
ern
50
52
54
56
58
60
62
64
66
68
0.1234
0.1361
0.1500
0.1651
0.1815
0.1992
0.2184
0.2391
0.2615
0.2856
0.001012
0.001013
0.001014
0.001015
0.001016
0.001017
0.001018
0.001019
0.001020
0.001022
12.05
10.98
10.02
9.158
8.380
7.678
7.043
6.468
5.947
5.475
209.2
217.7
226.0
234.4
242.8
251.1
259.5
267.9
276.2
284.6
2443.6
2446
2449
2451
2454
2456
2459
2461
2464
2467
209.3
217.7
226.0
234.4
242.8
251.1
259.5
267.9
276.2
284.6
2382.9
'2377
'2373
'2368
2363
2358
2353
2348
2343
2338
2592.2
2595
2599
2602
2606
2609
2613
2616
2619
2623
Fone
Pressul'e
Volume
1
m
3
=
HKXl
L
=
10
6
cm'
=
HP
mL
=
35.3145
ft3
=
2.20.83
imflerial
gallons'"
264.17
g1l1
=
105M8qt
1
ft>
=
1728
in?
=
7.4805
gal
=
0.028317
m:>
=
28.317
L
=
2S,317em
l
1 N
,~l
kg-mis
2
=
H?
dynes
=
IO'~
g'cmls
2
'"
0.22481lb
l
Ilbr
=
32,1.74
Ibm
·ftls!
=
4.44112
N
=
4.4482
X
10
5
dynes
1 aIm
=
1.01325
x
1IJ'
N/m
2
(Pa)
~,
lOU25
kP"
=
1.01325
bar
~
I.01J25
x
l(l6
dynes/em"
'" 760
111m
Hg
al
(tC
(torr)
=
10.333
m H
2
0
:I[
4"C
~'"
14,696 IblliD.! (psi)
=
33.9 It
H:O:II
4''C
'"
29.921
in.
fig
3t
O"C
'From
R.
W.
Haywood,
Thermodynamic
Tables
in
Sf
(Metric)
Units,
Cambridge Vnive.rsity Press,
Ene
...
,:)'
I 1
'"
J
N'm
=
10
7
ergs
~
10
7
dyne'em
London,
1968.
V
'"
specilicvoJume,
0
'"
specilicintelnalenergy,andlt '"
specific
enthalpy.
Note:
"0
~
2.778
x
10-
7
kW·h
=.
0.23901
cal
Ql
,
=
fJ.7376 ft·lbr
=
lJ.4116
x
lIr
4
Btu
kJIkg X
0.4303
'" Btullb
m
•
co
ctl
I
Power
1 W
=
1
l/s
=
0.23901
calf, '"
fJ.T\7(i
fHhr!s
=
9.486 x
lt1'·
4
Btuls
I
-"
-->.
I
=
1.341
x
10-'
hp
I
-->.
W
'2.20462
Ibm
\
Example:
The [actor to
eonver1
grams
In
Ibm
i.,
(
..
.........
•
.
...
).
\
HMK.lg
J
Table
B.6
Properties of Saturated
Steam:
Pressure
Table
Q
Table
&6
(Continued)
~(m3/kg)
9(m
3
/kg)
(")
:r:
OJ
P(bar)
0.00611
0.008
Tee)
0.01
3.8
Water
0.001000
0.001000
Steam
206.2
159.7
P(bar)
1.1
1.2
1.3
Tee)
102.3
104.8
107.1
Water
0.001046
0.001048
0.001049
Steam
1.549
1.428
1.325
m
I\J
->.
0
0
m
><
Ql
3
-
0.010
7.0
0.001000
129.2
1.4
109.3
0.001051
1.236
0.012
9.7
0.001000
108.7
1.5
111.4
0.001053
1.159
0.014
12.0
0.001000
93.9
1.6
113.3
0.001055
1.091
0.016
14.0
0.001001
82.8
1.7
115.2
0.001056
1.031
0.018
15.9
0.001001
74.0
1.8
116.9
0.001058
0.977
0.020
0.022
0.024
0.026
0.028
17.5
19.0
20.4
21.7
23.0
0.001001
0.001002
0.001002
0.001002
0.001002
67.0
61.2
56.4
52.3
48.7
1.9
2.0
2.2
2.4
2.6
2.8
118.6
120.2
123.3
126.1
128.7
131.2
0.001059
0.001061
0.001064
0.001066
0.()01069
0.001071
0.929
0.885
0.810
0.746
0.693
0.646
0.030
0.035
24.1
26.7
0.001003
0.001003
45.7
395
3.0
3.2
133.5
135.8
0.001074
0.001076
0.606
0.570
0.040
29.0
0.001004
34.8
3.4
137.9
0.001078
0.538
0.045
31.0
0.001005
31.1
3.6
139.9
0.001080
0.510
0.050
32.9
0.001005
28.2
3.8
141.8
0.001082
0.485
OJl6O
36.2
0.001006
23.74
4.0
143.6
0.001084
0.462
0.070
0.080
0.090
0.10
0.11
0.12
0.13
39.0
41.5
43.8
45.8
47.7
49.4
51.1
.
0.001007
0.001008
0.001009
0.001010
0.001011
0.001012
0.001013
20.53
18.10
16.20
14.67
13.42
12.36
11.47
4.2
4.4
4.6
4.8
5.0
5.5
6.0
65
145.4
147.1
148.7
150.3
151.8
1555
158.8
1620
0.001086
0.001088
0.001089
0.001091
0.001093
0.001097
0.001101
0.001105
0.442
0.423
0.405
0.389
0.375
0.342
0.315
0.292
0.14
52.6
0.001013
10.69
7.0
165.0
0.001108
0.273
"0
Ql
co
CD
->.
I\J
--
.....
w
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o
I
ATOMIC WEIGHTS AND NUMBERS
CD
m
Atomk
weights apply
to
II!Ilurally
o,"'Cuning
iliOlopic
c.ompo!lilioIL~
lind
are
bll!i~d
un
ltD
ulomic
mlL~~
Atomic
wcigbls
811ply
to
natulUU)' occurring isotopic t'omposltions
lind
are
based
IOn
\In
lltl'A1ic
I'..J
of
Uc
=
U
ltlll~~
of
lIe
~
12
......
____
.
____
.
__
.
__
..
___
._._
..
..
__
...
__
..
__
.
__
.
..
....
__
-~--'-.
o
Atomic
Atomic
Atomic
Alonlit;
Atomic
Atuntie
Atomic
Atomic
o
ElclaclIl
Symbol
Number
Weight
Elemelll
Symbol
Number
m
..
Wei!lhl
Element
Symbol
Number
Wdllbt
ElelIlll'ut
Symbol
Number
Weigllt
x
-----,,~---
III
ACI.iniulII
Ac
119
Iridium
Ir
77
.192.2
Silver
i\g
47
107.868
Tin
Sn
511
IIK.,9
3
Aluminum
Al
13
26.9ll15
Iron
Fe
26
55.~7
Sodium
Na
11
229898
1Itanillrn
11
22
47.<Jtl
Americium
Am
95
Krypton
Kr
36
B3.!lO
Strontium
S1'
38
87.62
Thngslcll
W
74-
J83J:(5
Anti-mon)'
Sb
51
121.73
umrhanum
La
57
l';IS.~J
Sulfur
S
16
.12.064
Uranium
U
92
138.03
Argon
Ar
18
39.948
I
....
uwrcncium
LI
103
..,.
..•
Tantalum
Ta
/.)
180.948
Vanadium
V
23
50.942
ArsclIlc
M
33
74.9~16
Lead
Pb
82
207.19
..
__
.
Technetium
Tc
43
Xenon
Xc
54
nuo
A~latille
AI
8S
Lithium
Li
3
6.939
Bari\lm
fia
S6
137.34
L\tt.dium
I
..
ll
71
174.97
Tellurium
Te
52
127.60
Ytterbium
Vb
70
173.()4
Berkelium
Bk
97
Mugneslum
Mg
12
24.312
Terbiwn
Th
65
158.924
Yttrium
Y
.19
Hil.905
Beryllium
Be
4
9.0122
Manganese
Ntn
25
54.9380
lluliIium
Tl
81
2007
Zinc
Zn
30
65.37
Bismmh
Bi
83
208.980
Mcndclc\'ium
Md
101
'Ihorium
'H\
90
2.:'2.038
Zin;:onium
7:1'
4f)
9T.22
Boron
B
5
10.811
Mercury
Hg
80
20059
1llUlium
'I'm
69
(Q.'j.934
Brurninc
Br
35
79.904
Molybdellum
Mo
42
95.94
Cadmium
Cd
48
1I2.40
Neodymium
Nd
tiO
144.24
Calcium
Ca
20
41l.0S
NcnI1
Nc
10
20.183
Californium
Cf
%
-
Ncplunium
Np
93
Carbon
C
6
12.0l11.~
Ni<::kd
Ni
28
58.71
Cerium
Ce
58
140.12
Nint>ium
Nb
41
92.906
THE
GAS
CONSTA~T
Cesium
Cs
5S
132.905
Nitrogen
N
7
14.0067
Nobelium
No
1m
Chlorine
CI
17
35.453
8.3J4
mJ'Pa'(mol'Kj
Chromium
Cr
24
51.996
Osmium
05
75
190.2
0.08314
L'barl(mol'Kj
Cobalt
Co
27
56.9332
Oxygerl
0
R
15.9994
Copper
eu
29
63.546
Palladium
U.Oll206
L'alm/(mol'KI
Pd
46
106.4
Curium
em
96
Phosphorus
P
15
311.973R
62.36
L'mm
HgJ(mol' K)
Dysprosium
Dy
66
162.50
Platinum
Pt
78
1'15()9
Einsteinium
Es
99
-
Plutonium
Pu
94
0.7302
fI
3
·lJlmi(lb.mok·'R)
Erbium
Er
68
167.26
Polonium
Po
84
10.73
ft
3
'psiai(lb-mo\e-"R)
Europium
Eu
63
151.96
Potassium
K
19
39.102
FermiullI
I'm
100
-
Praseodymium
Pr
59
140.907
C)
l:\.314
JI(mol'K}
Fluorine
F
1ll.9984
Promet.hium
Pm
61
fr;),ncium
FI
81
-
Prolactin
i
urn
1'(1
91
1.987 caV(mo!·K)
Gadolinium
Od
64
157.25
Radium
Ra
~S
Gallium
O~
31
69.12
Radon
I.lJ87 Blui(lb-JIIok"'RI
Rn
l:\6
Germanium
Ge
32
72.59
Rhenium
Rc
75
186.2
Gold
Au
79
191\.967
Rhodium
Rh
45
102.905
Hafnium
Hf
72
178.49
Rubidium
Rb
,~7
8457
Helium
He
2
4.0026
Ruthenium
Ru
cl4
101.07
Holmium
H,1
67
lM.9)O
Samarium
Sm
62
150.35
Hyurob'Cri
H
1
1.00797
Scandium
Sc
21
44.95&
Indium
In
49
114.82
Selenium
Se
34
78.%
Iodine
I
53
126.9044
Silicon
Si
14
2K08l'i
"0
III
(C
CD
w
......
--
w
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[References]
This question has multiple parts. Work all the parts to get the most points.
Siderite is a mineral consisting largely of iron(II) carbonate. Write an overall, balanced equation for its reaction with nitric acid, and name the products.
(Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.)
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show full & complete procedure. Please answer parts a), b) & c). Note they are subparts of the same question
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Need help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!
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FINAL Experiment 1- January 2021_-789644623 - Saved
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Table
A friend of yours went panning for gold last weekend and found a nugget
that appears to be gold. With your newfound scientific prowess, you set out
to determine if it is really gold. Your tests show that the nugget has a mass
of 7.6 g. Immersing the nugget in water raised the volume from 7.22 mL to
8.06 mL. The density of gold is 19.32 g/cm3. What will you tell your friend?
acer
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The movie below shows some molecules in a tiny sample of a mixture of gases.
12345 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
||||||||||||||||||I
Drag the slider to see how the molecules move.
Does a chemical reaction happen during this
movie?
If a chemical reaction does happen, write a
balanced chemical equation for it.
П
yes
no
carbon
nitrogen
chlorine
key
hydrogen
oxygen
bromine
X
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Balance each reaction and match it to the sum of the coefficients of the balanced
reaction.
For example, sum of coefficients of 2 H2 + O2 → 2 H2O is 2 + 1 + 2 = 5. Please
watch the video Sum of Coefficients for more details. If you are having trouble with
the exercise, this video will help.
D
4
6
12
5
10
13
18
1.
2.
3.
4.
5.
6.
7.
02 → 03
V205 + Ca → CaO + V
Screen Reader: V205 + C a → Ca
O +V
H2SO4 + HI → H2S + 12 + H2O
Screen Reader: H2SO4 + HI→ H2S
+ 12 + H2O
V205 + HCI → VOCI3 +H2O
Screen Reader: V205 + HCI → VO
Cl3 +H2O
Al2O3 + C +N2 → AIN + CO
Screen Reader: Al2O3 + C +N2 → A
IN + CO
Li2O + H2O → LiOH
Screen Reader: Li 20 + H2O → Li
OH
NH4VO3 → V205 + NH3 + H2O
Screen Reader: N H4V 03 → V205
+ NH3 + H2O
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Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced and contains state
symbols after every reactant and product.
HNO, (aq) +
H,0(1) -
Check
Explanation
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Please help
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Report Sheet
(Energy and Matter)
Name Qudreg L. Formantes
Date 07 /04 21
Section 115
Team
Instructor Name Midas Tsai
Part A: Exothermic and Endothermic Reactions:
NHẠNO3 Solution
CaCl2 Solution
Initial water temperature (°C)
22 °C
22°C
Final water temperature (°C)
19 °C
24° C
Temperature change
-3 °C
2° C
Endothermic or Exothermic
Endo thermic
Exothermic
Add the term heat to the reactants or products in the following chemical equations.
H20
NH,NO; (s)
→ NH,* (aq)
+ NO; (aq)
H2O
CaCl, (s)
Ca* (aq)
+ 2C1° (aq)
Q 1: Use the knowledge you attained from the above activity and answer the following. Indicate
the process that absorb energy with a positive sign (+, endothermic) and the process that releases
energy with a negative sign (-, exothermic).
Process
Sign (+ or -)
Exothermic or Endothermic
Freezing water
Cooking a potato in a microwave oven
Burning wood log in a fireplace
Digestion of food inside the body
Photosynthesis
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duction to MasteringChemistry - Attempt 1
duction to Vocabulary Questions
Reset Help
maple
1. Hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as
pine
cedar
elm
and pine
mango
2. Conifer leaves are generally thin and needle-like, while seeds are contained in cones. Conifers
cedar
include pine and elm
elm
3. Deciduous trees lose their leaves seasonally and include trees such as mango and maple
4. Evergreens are plants that maintain their leaves in all seasons and include trees such as elm
pine
and cedar
Submit
Previous Answers Request Answer
Introduction to Ma.
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8
9
10
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Posttest
Direction. Read the questions carefully. Write the letter of the correct answer.
1. Water exists in three states of matter and continuously moving through a cycle
on Earth. At which stage in the water cycle does water transform from a gas to a
liquid?
a.evaporation
c. precipitation
b. condensation
d. Sublimation
2.
Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which
of the following is the BEST evidence that a chemical reaction occurs when the coal
burns?
a. Production of mechanical energy c. A new substance is produced
b. Production of electricity
d. Formation of precipitate
3.Which of these does NOT happen during a chemical change?
a. New substances are formed with different chemical properties.
b. Attractive force between atoms of molecule formed or break.
c. The chemical properties of the substances before and after the reaction are
the same
d. Energy is always released or absorbed.
4. A granular substance is added to a liquid. Which of the…
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For Expt. #5 - iron (III) chloride and sodium hydroxide, if a reaction occurred here,
what is the integer coefficient of the reactant anion?
Make sure your answer is an integer. Enter the value and nothing else.
If there is no NIE, then write no NIE and nothing else.
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- [References] This question has multiple parts. Work all the parts to get the most points. Siderite is a mineral consisting largely of iron(II) carbonate. Write an overall, balanced equation for its reaction with nitric acid, and name the products. (Use the lowest possible coefficients. Be sure to specify states such as (aq) or (s). If a box is not needed, leave it blank.) Submit Visited pt pr Submit Answer Try Another Version 10tem attempts remaining 1 pt 1 pt 1 pt 1 pt Previous Next 9:37 PM 6/22/2021 66°F e to searcharrow_forwardshow full & complete procedure. Please answer parts a), b) & c). Note they are subparts of the same questionarrow_forwardNeed help filling this out. It is the Data Sheet for Ch. 2 Qualitative Analysis. Very much appreciated!arrow_forward
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Chemistry: The Molecular Science
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