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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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![A session.masteringchemistry.com
e MasteringChemistry: Ch 9.7 to 9.10
G Enter your answer using units of molar he.
E Crayfish - Google Slides
<Ch 9.7 to 9.10
My Questions | bartleby
C The Table Below Contains The Bond D
Item 11
11 of 12
I Review I Constants I Periodic Table
In chemical reactions, heat is converted into chemical
energy (the potential energy stored in chemical bonds)
or vice versa. Thus, enthalpy change for a reaction can
be approximated from
AH° = D(reactants) – D(products)
Part A
Calculate the bond dissociation energy for the breaking of all the bonds in a mole of methane, CHA.
where D represents bond dissociation energies of the
reactants and products, respectively.
Express your answer to four significant figures and include the appropriate units.
• View Available Hint(s)
The table below contains the bond dissociation
energies for common bonds. The information can be
used to calculate the energy needed to break all the
bonds in a given molecule.
Dissociation energy
(kJ/mol )
Bond
DCH,D_CH_4 =
Value
Units
C-C
350
C-C
611
Submit
C-H
410
C-O
350
Part B
C-O
732
O-0
180
What is the bond dissociation energy for breaking all the bonds in a mole of O, molecules?
O-0
498
Express your answer to three significant figures and include the appropriate units.
H-O
460
• View Available Hint(s)
HA
圖] ?
DoD_O_2 =
Value
Units
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9](https://content.bartleby.com/qna-images/question/c319599a-7fb4-4ccd-84db-e0c8bd138b0d/21ec622f-07ec-4488-8e46-039cba25df8f/r7dlnd_thumbnail.jpeg)
Transcribed Image Text:A session.masteringchemistry.com
e MasteringChemistry: Ch 9.7 to 9.10
G Enter your answer using units of molar he.
E Crayfish - Google Slides
<Ch 9.7 to 9.10
My Questions | bartleby
C The Table Below Contains The Bond D
Item 11
11 of 12
I Review I Constants I Periodic Table
In chemical reactions, heat is converted into chemical
energy (the potential energy stored in chemical bonds)
or vice versa. Thus, enthalpy change for a reaction can
be approximated from
AH° = D(reactants) – D(products)
Part A
Calculate the bond dissociation energy for the breaking of all the bonds in a mole of methane, CHA.
where D represents bond dissociation energies of the
reactants and products, respectively.
Express your answer to four significant figures and include the appropriate units.
• View Available Hint(s)
The table below contains the bond dissociation
energies for common bonds. The information can be
used to calculate the energy needed to break all the
bonds in a given molecule.
Dissociation energy
(kJ/mol )
Bond
DCH,D_CH_4 =
Value
Units
C-C
350
C-C
611
Submit
C-H
410
C-O
350
Part B
C-O
732
O-0
180
What is the bond dissociation energy for breaking all the bonds in a mole of O, molecules?
O-0
498
Express your answer to three significant figures and include the appropriate units.
H-O
460
• View Available Hint(s)
HA
圖] ?
DoD_O_2 =
Value
Units
MacBook Pro
esc
www.
@
#
$
%
&
1
2
3
4
5
6
7
8
9
![Masteringchemistry: Ch 9.7 to 9.10
G Enter your answer using units of molar he.
E Crayfish - Google Slides
b My Questions | bartleby
C The Table Below Contains The Bond Dl.
<Ch 9.7 to 9.10
Item 11
11 of 12
I Review I Constants I Periodic Table
In chemical reactions, heat is converted into chemical
energy (the potential energy stored in chemical bonds)
or vice versa. Thus, enthalpy change for a reaction can
be approximated from
AH° = D(reactants) - D(products)
Part C
Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H,O.
Express your answer as an integer and include the appropriate units.
where D represents bond dissociation energies of the
reactants and products, respectively.
> View Available Hint(s)
The table below contains the bond dissociation
energies for common bonds. The information can be
used to calculate the energy needed to break all the
bonds in a given molecule.
HA
O) E) ?
DH,0D_H{ _2}O =
Value
Units
Dissociation energy
(kJ/mol )
Bond
C-C
350
Submit
C-C
611
C-H
410
Part D
C-O
350
C-0
732
Calculate the bond dissociation energy needed to break all the bonds in a mole of carbon dioxide, CO2
O-0
180
Express your answer as an integer and include the appropriate units.
O-0
498
> View Available Hint(s)
H-O
460
?
Dco,D_CO_2 = Value
Units
Submit
MacBook Pro
esc
&
%
#
$
7
8
@
5
6.
3
4
2](https://content.bartleby.com/qna-images/question/c319599a-7fb4-4ccd-84db-e0c8bd138b0d/21ec622f-07ec-4488-8e46-039cba25df8f/1159bpa_thumbnail.jpeg)
Transcribed Image Text:Masteringchemistry: Ch 9.7 to 9.10
G Enter your answer using units of molar he.
E Crayfish - Google Slides
b My Questions | bartleby
C The Table Below Contains The Bond Dl.
<Ch 9.7 to 9.10
Item 11
11 of 12
I Review I Constants I Periodic Table
In chemical reactions, heat is converted into chemical
energy (the potential energy stored in chemical bonds)
or vice versa. Thus, enthalpy change for a reaction can
be approximated from
AH° = D(reactants) - D(products)
Part C
Calculate the bond dissociation energy required for breaking all the bonds in a mole of water molecules, H,O.
Express your answer as an integer and include the appropriate units.
where D represents bond dissociation energies of the
reactants and products, respectively.
> View Available Hint(s)
The table below contains the bond dissociation
energies for common bonds. The information can be
used to calculate the energy needed to break all the
bonds in a given molecule.
HA
O) E) ?
DH,0D_H{ _2}O =
Value
Units
Dissociation energy
(kJ/mol )
Bond
C-C
350
Submit
C-C
611
C-H
410
Part D
C-O
350
C-0
732
Calculate the bond dissociation energy needed to break all the bonds in a mole of carbon dioxide, CO2
O-0
180
Express your answer as an integer and include the appropriate units.
O-0
498
> View Available Hint(s)
H-O
460
?
Dco,D_CO_2 = Value
Units
Submit
MacBook Pro
esc
&
%
#
$
7
8
@
5
6.
3
4
2
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- MISSED THIS? Read Section 7.6 (Pages 281- 284), Watch IWE 7.7 View Available Hint(s) Nitromethane (CH,NO2) burns in air to produce significant amounts of heat via the following reaction Hint 1. Calculate the number of moles of nitromethane 2CH,NO, (1) +O2(g)→ 2CO2(g) +3H,O(1) + N2(g) The value of AH is related to the balanced chemical equation by the number of moles of nitromethane. Calculate the number of moles of nitromethane in a 2.73-kg sample. AHn -1418 kJ Express your answer in moles. mol CH, NO2 44.72 Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Convert the mass of nitromethane from kg to g. Then use the molar mass of nitromethane as a conversion factor to obtain a value in mol HA Value Units = barrow_forwardUse the molar bond enthalpy data in the table to estimate Average molar bond enthalpies. (Hpond) the value of AHn for the equation Bond kJ - mol-1 Bond kJ - mol-1 CCI, (g) + 2F, (g) CF,(g) + 2Cl, (g) O-H 464 C=N 890 The bonding in the molecules is shown. 0-0 142 N-H 390 С-О 351 N-N 159 CICI O=0 502 N=N 418 + C CI C=0 730 N=N 945 F-F С-С 347 F-F 155 C=C 615 Cl-CI 243 C=C 811 Br-Br 192 С-Н 414 Н-Н 435 C-F 439 Н-F 565 C-CI 331 Н-С 431 C-Br 276 Н-Br 368 C-N 293 H-S 364 C=N 615 S-S 225arrow_forwardA scientist measures the standard enthalpy change for this reaction to be 296.0 kJ/mol: H₂S(g) + 2 H₂O(l) 3H₂(g) + SO₂(g) Based on this value and the standard formation enthalpies for the other substances, the standard formation enthalpy of H₂S(g) is kJ/mol. Submit Answer Retry Entire Group 1 more group attempt remainingarrow_forward
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