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प्रश्न
22.4 litres of gas weighs 70 g at STP. Calculate the weight of the gas if it occupies a volume of 20 litres at 27°C and 700 mmHg of pressure.
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उत्तर
Step 1:
V1 = 20 litres
P1 = 700 mm
T1 = 300 K
V2= ?
T2 = 273 K
P2 = 760 mm
`("P"_1 "V"_1)/"T"_1 = ("P"_2 "V"_2)/"T"_2`
`(700xx20)/300 = (760xx"V"_2)/273`
`"V"_2 = (91xx7)/76 = 637/38 = 16.76` litres
Step 2:
22.4 litres of the gas at STP weighs = 70 g
16.76 litres of the gas has weight at STP =
`(70xx16.76)/22.4 = 52.38` g
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संबंधित प्रश्न
State the law which is represented by the following graph:
Give reasons for the following:
Inflating a balloon seems to violate Boyle's law.
At constant temperature, the effect of change of pressure on the volume of a gas was as given below:
|
Pressure in atmosphere |
Volume in liters |
|
0.20 |
112 |
|
0.25 |
89.2 |
|
0.40 |
56.25 |
|
0.60 |
37.40 |
|
0.80 |
28.10 |
|
1.00 |
22.4 |
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Give its
(i) mathematical expression
(ii) graphical representation and
(iii) significance.
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The volume of a gas is inversely proportional to its pressure at a constant temperature.
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