Calculate the heat released (in kJ) when 520.59 grams of benzene (C,H6) are cooled from 114.9°C to 2.0°C. AHvap= 33.8 kJ/mol %3D ΔΗu = 10.9 kJ/mol Boiling Point = 80.1°C Melting Point= 5.5°C Csp(1) = 1.70 J/g° c %3D Csp(s)= 1.51 J/g°C Csp(g)= 1.05 J/g°C Enter your answer using 2 decimal places
Calculate the heat released (in kJ) when 520.59 grams of benzene (C,H6) are cooled from 114.9°C to 2.0°C. AHvap= 33.8 kJ/mol %3D ΔΗu = 10.9 kJ/mol Boiling Point = 80.1°C Melting Point= 5.5°C Csp(1) = 1.70 J/g° c %3D Csp(s)= 1.51 J/g°C Csp(g)= 1.05 J/g°C Enter your answer using 2 decimal places
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Teacher stated that there should only be one final answer using two decimal places, not three answers.
Transcribed Image Text:Calculate the heat released (in kJ) when 520.59 grams of benzene (C6H6) are cooled from 114.9° C to 2.0°C.
AHvap= 33.8 kJ/mol
AH fus= 10.9 kJ/mol
Boiling Point = 80.1°C
Melting Point= 5.5°C
Csp(1) = 1.70 J/g°C
Csp(s)= 1.51 J/g°C
Csp(g)= 1.05 J/g°C
Enter your answer using 2 decimal places
Transcribed Image Text:ABBREVIATIONS AND SYMBOLS
CONSTANTS & CONVERSIONS
molar mass
M
amount of substance
atmosphere
atomic mass unit
gas constant
R
n
mole
mol
R= 8.314 J•mol-1·K-'
g
Planck's constant
h
atm
gram
hour
R= 0.0821 L·atm•mol-l·K-'
h
u
atomic molar mass
A
joule
J
pressure
P
NA = 6.022 × 1023 mol-'
kelvin
K
second
Avogadro constant
Celsius temperature
|centi- prefix
energy of activation
enthalpy
frequency
NA
h= 6.626 × 10-34 J-s
°C
kilo- prefix
k
speed of light
liter
L
temperature, K
T.
c = 2.998 × 10® m·s-'
Ea
measure of pressure mmHg
time
0 °C = 273.15 K
1 atm = 760 mmHg
H
milli- prefix
volume
V
m
molar
M
1 atm = 760 torr
EQUATIONS
q = MC¸AT
c = Av
PV = nRT
AE = q +w
E = hv
PERIODIC TABLE OF THE ELEMENTS
1
18
1
2
H
Не
1.008
2
13
14
15
16
17
4.003
4
6.
7
9.
10
Li
Ве
В
F
Ne
6.941
9.012
10.81
12.01
14.01
16.00
19,00
20.18
11
12
13
14
15
16
17
18
Na
Mg
Si
Al
26.98
S
32.07
CI
Ar
22.99
24.31
3
4
7
9
10
11
12
30.97
33
28.09
35.45
39.95
19
20
21
22
23
24
25
Mn
26
27
28
29
30
31
32
34
35
36
K
Са
Sc
Ti
V
Cr
Fe
Co
Ni
Cu
Zn
Ga
69.72
Ge
As
Se
Br
Kr
39.10
40.08
44.96
47.88
50.94
52.00
54.94
55.85
58.93
58.69
63,55
65.39
72.61
74.92
78.96
79.90
83.80
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
Rb
Sr
Y
Zr
Nb
Мо
Tc
Ru
Rh
Pd
In
Ag
107.9
Cd
Sn
Sb
Те
I
Хе
85.47
87.62
88.91
91.22
92.91
95.94
101.1
102.9
106.4
112,4
114.8
118.7
121.8
127.6
126.9
131.3
55
56
57
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
Cs
Ва
La
Hf
Та
W
Re
Os
Ir
Pt
Au
Hg
TI
Pb
Bi
Po
At
Rn
132,9
137.3
138.9
178.5
180.9
183.8
186.2
190.2
192.2
195.1
197.0
200,6
204.4
207.2
209.0
87
88
89
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
Fr
Ra
Ac
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
Cn
Nh
F1
Mc
Lv
Ts
Og
58
59
60
61
62
63
64
65
66
67
68
69
70
71
Се
Pr
Nd
Pm
Sm
Eu
Gd
Tb
Dy
Но
Er
Tm
Yb
Lu
140,1
140.9
144.2
150.4
152.0
157.3
158.9
162,5
164,9
167.3
168,9
173,0
175,0
EB
90
91
92
93
94
95
96
97
98
99
100
101
102
103
Th
Ра
U
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
Lr
232.0
231.0
238.0
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