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Tardigrade
Question
Physics
A mixture of ideal gases has 2 moles of He, 4 moles of oxygen and 1 mole of ozone at absolute temperature T. The internal energy of mixture is
Q. A mixture of ideal gases has
2
moles of
He
,
4
moles of oxygen and
1
mole of ozone at absolute temperature
T
. The internal energy of mixture is
3255
214
Kinetic Theory
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A
13 RT
B
11 RT
C
16 RT
D
14 RT
Solution:
Degrees of freedom of
He
(
f
He
)
=
3
Degrees of freedom of
O
2
(
f
O
2
)
=
5
Degrees of freedom of
O
3
(
f
O
3
)
=
6
n
He
=
2
,
n
O
2
=
4
n
O
3
=
1
Energy of mixture = Sum of individual energies
=
(
n
He
f
He
+
n
O
2
f
O
2
+
n
O
3
f
O
3
)
2
RT
=
(
2
×
3
+
4
×
5
+
1
×
6
)
2
RT
=
(
3
+
10
+
3
)
RT
=
16
RT