ICSE Class 9 Answered
Please solve these numerical by boyle's and charle's law
1.A gas occupies 3 litres at 0°C. What volume will it occupy at -20°C, pressure remains constant? (Ans.2.78 litres)
2.870 cc of moist hydrogen measured at 9°C and 659 mm pressure. Find the volume of dry hydrogen at N.T.P. The vapour pressure of water at 9°C is 9 mm.(ans.715.9 cc)
3. A sample of carbon dioxide occupies 30 cm3 at 15°C and 740 mm pressure. Find its volume at S.T.P.(ans. 27.7 cc)
4. A gas occupies a volume of 1000 cc at 0°C and 760 mm pressure. Find the volume of gas if temperature of the gas is increased by one fifth and its pressure is increased one and half times.(ans.800 cc)
5. A fixed volume of a gas occupies 380 cc at 27°C and 70 cm of mercury. What is its volume at S.T.P.(ans.318.5 cc)
6. The pressure of a gas at S.T.P. is doulbed and the temperature is raised to 273°C. What is the final volume of the gas.
7. One litre of a gas weighs 1.33g at 750 mm of mercury and 77°C. Calculate the weight of 500 ml of the gas at 37°C and 640 mm hg.(ans.0.640 g)
8. At 0°C and 760mm hg pressure , a gas occupies a volume of 100 cm3. The kelvin temperature of the gas increased by one-fifth while the pressure is increased one and half times. Calculate the final volume of the gas. (Ans. 80 cc)
Asked by Sl9380 | 01 Feb, 2019, 02:23: PM
Expert Answer
Q. 5 A fixed volume of gas occupies 380 cc at 27°C and 70 cm of mercury. What is its volume at S.T.P.
Given:
P1 = 700 mmHg
T1 =27 °C
= 300 K
V1 = 380 cc
P2 = 760 mmHg
T2 = 273 K
V2 = ?
Please refer to below link for the solutions of rest of the questions:
Answered by Varsha | 01 Feb, 2019, 06:51: PM
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