1
answer
0
watching
294
views
6 Nov 2019
3. Which equation represents a reaction that provides the heatof formation of Fe3O4? (Just write A,B, C, D,or E on the answer sheet)
a) 3 Fe(s) + 4 O(g) Fe3O4(s) b) 6 Fe(g) + 2O2(g) 2 Fe3O4(s)
c) 3 FeO(s) + H2O(g) Fe3O4(s) + H2(g) d) 3 Fe(s) + 2 O2(g) Fe3O4(s)
e) Fe(s) + 2/3 O2(g) 1/3Fe3O4 (s)
4. The combustion of B2H6 occursaccording to the following equation. Using the enthalpies offormation, calculate the energy (kJ) released when 4.00 g ofB2H6 reacts.
(Atomic weights: B = 10.81, O = 16.00, H = 1.008).
B2H6(g) + 3 O2(g) B2O3(s)+ 3 H2O(g)
ÎHo B2H6(g) = -57.4 kJ/mole
Î Ho B2O3(s) = -1273kJ/mole
ÎHo H2O(g) = -241.8 kJ/mol
3. Which equation represents a reaction that provides the heatof formation of Fe3O4? (Just write A,B, C, D,or E on the answer sheet)
a) 3 Fe(s) + 4 O(g) Fe3O4(s) b) 6 Fe(g) + 2O2(g) 2 Fe3O4(s)
c) 3 FeO(s) + H2O(g) Fe3O4(s) + H2(g) d) 3 Fe(s) + 2 O2(g) Fe3O4(s)
e) Fe(s) + 2/3 O2(g) 1/3Fe3O4 (s)
4. The combustion of B2H6 occursaccording to the following equation. Using the enthalpies offormation, calculate the energy (kJ) released when 4.00 g ofB2H6 reacts.
(Atomic weights: B = 10.81, O = 16.00, H = 1.008).
B2H6(g) + 3 O2(g) B2O3(s)+ 3 H2O(g)
ÎHo B2H6(g) = -57.4 kJ/mole
Î Ho B2O3(s) = -1273kJ/mole
ÎHo H2O(g) = -241.8 kJ/mol
1
answer
0
watching
294
views
For unlimited access to Homework Help, a Homework+ subscription is required.
Reid WolffLv2
3 Nov 2019
Related textbook solutions
Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232