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प्रश्न
Give reason for the following:
Gases have a lower density compared to solids or liquids.
उत्तर
Gases have low densities as the inter-molecular distance between the molecules of gases is very large.
Pressure on the wall = `("Force exerted on the wall")/("Total area of the container wall")`
संबंधित प्रश्न
State (i) the three variables for gas laws and (ii) SI units of these variables.
Convert the following temperature from degree Celcius to kelvin.
25° C
Convert the following pressure value into Pascals.
1 kPa
Convert the following pressure value into Pascals.
107000 Nm−2
Convert −100° C to kelvin
Write the statement for Charles’ law
Solve the following.
A balloon is inflated with helium gas at room temperature of 25°C and at 1 bar pressure when its initial volume is 2.27L and allowed to rise in the air. As it rises in the air external pressure decreases and the volume of the gas increases till finally, it bursts when external pressure is 0.3bar. What is the limit at which the volume of the balloon can stay inflated?
Explain the following observation.
The size of a weather balloon becomes larger and larger as it ascends up to larger altitude
Hydrochloric acid is treated with a metal to produce hydrogen gas. Suppose a student carries out this reaction and collects a volume of 154.4 × 10−3 dm3 of a gas at a pressure of 742 mm of Hg at a temperature of 298 K. What mass of hydrogen gas (in mg) did the student collect?
If 2 moles of an ideal gas at 546 K has volume of 44.8 L, then what will be it's pressure? (R = 0.082)
