Chapter6: Thermochemistry
Section: Chapter Questions
Problem 94E: The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene...
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Transcribed Image Text:F2
V
(see the table).
Specific Heats for Some Substances
Substance
Elements
Aluminuim, Al(s)
Copper, Cu(s)
Gold, Au(s)
Iron, Fe(s)
Silver, Ag(s)
Titanium, Ti(s)
#
Compounds
Ammonia, NH3(g)
Ethanol, C₂H5OH(1)
Sodium chloride,
NaCl(s)
Water, H₂O(1)
Water, H₂O(s)
F3
E
20:
$
F4
cal/g °C J/g °C
0.214 0.897
0.0920 0.385
0.0308
0.129
0.108
0.452
0.0562 0.235
0.125 0.523
0.488
0.588
D F
2.04
2.46
0.207 0.864
1.00
4.184
0.485 2.03
%
R T
Q Search
F6
G
▼ Part B
the energy needed to heat 5.65 g of water from 5.5 °C to 60.6 °C
H
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Part C
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F8
the energy lost when 79.9 g of water cools from 86.4 °C to 3.2 °C
P Pearson
La
FO
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F10
cal
K
Review
F12
Prt Sc
Expert Solution
Step 1
According to the answering guidelines, I'm posting the solution for the first question. Kindly post the other question separately.
Thank you.
We know that the formula to be used here is -
q = m. C. ΔT
Where
q = heat needed
m = mass of substance
C = specific heat capacity of the substance
ΔT = (final temperature - initial temperature)
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