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EAMCET Engineering 2002 Solved Paper
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© examsnet.com
Question : 42
Total: 200
The mass of oxygen gas occupying a volume of 11.2 litres at a temperature
27
∘
C
and a pressure of
760
nm
of mercury in kilograms is [Molecular weight of oxygen
=
32
]
0.001456
0.01456
0.1456
1.1456
Validate
Solution:
At STP (
273
K
and at
760
mm
of
Hg
) the mass of oxygen
=
32
g
From
P
1
V
1
m
1
T
1
=
P
2
V
2
m
1
T
2
P
1
=
760
mm
,
V
1
=
2241
(at STP)
T
1
=
273
K
P
2
=
760
mm
(given),
V
2
=
11.2
it (given)
T
2
=
27
+
273
=
300
K
∴
760
×
22.4
32
g
×
273
=
760
×
11.2
m
2
×
300
m
2
=
32
×
273
300
×
2
=
14.56
g
=
0.01456
kg
© examsnet.com
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