Calculate Δ H for 2 N O C l ( g ) → N 2 ( g ) + O 2 ( g ) + C l 2 ( g ) given the following reactions: 1 2 N 2 ( g ) → 1 2 O 2 ( g ) → N O ( g ) Δ H = 90.3 kJ C a C O 3 ( s ) → C a O ( s ) + C O 2 ( g ) Δ H = − 38.6 kJ
Calculate Δ H for 2 N O C l ( g ) → N 2 ( g ) + O 2 ( g ) + C l 2 ( g ) given the following reactions: 1 2 N 2 ( g ) → 1 2 O 2 ( g ) → N O ( g ) Δ H = 90.3 kJ C a C O 3 ( s ) → C a O ( s ) + C O 2 ( g ) Δ H = − 38.6 kJ
Solution Summary: The author explains that the value of Delta H needs to be calculated for the following reaction.
Calculate
Δ
H
for
2
N
O
C
l
(
g
)
→
N
2
(
g
)
+
O
2
(
g
)
+
C
l
2
(
g
)
given the following reactions:
1
2
N
2
(
g
)
→
1
2
O
2
(
g
)
→
N
O
(
g
)
Δ
H
=
90.3
kJ
C
a
C
O
3
(
s
)
→
C
a
O
(
s
)
+
C
O
2
(
g
)
Δ
H
=
−
38.6
kJ
Draw everything please on a piece of paper explaining each step
Define crystalline, polycrystalline and amorphous materials
What crystal system and Bravais lattices are shown in the figure immediately below? What do a, b,
C, a, ẞ and y represent and what are their values? You can label the Bravais lattices directly above or under the
figure.
C
a
32.
The diagrams below show the band structure of an intrinsic semiconductor at absolute zero and
room temperature.
Room Temperature
EF
E
OK
Ep-
a)
In the space below, sketch a similar pair of diagrams for an n-type semiconductor.
D)
Give the definition and an example of (i) an intrinsic semiconductor and (ii) an n-type semiconductor.
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Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY