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प्रश्न
Give reason for the following:
Gases exert pressure in all directions.
Gases unlike solids and liquids exert pressure in all directions.
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उत्तर १
The gas particles have a very weak attractive force between them and move randomly ultimately exert pressure in all direction. Their molecules are bouncing all around the container because they are so small, then gravity has very little effect on them.
उत्तर २
Impact of gas molecules with high velocity causes pressure to be exerted on the walls.
संबंधित प्रश्न
Explain Why?
"When stating the volume of a gas, the pressure and temperature should also be given."
Convert the following temperature from degree Celcius to kelvin.
273° C
Convert the following pressure value into Pascals.
1 kPa
Match the pairs of the following:
| Column ‘A’ | Column ‘B’ |
| a. Boyle’s law | i. at constant pressure and volume |
| b. Charles’ law | ii. at constant temperature |
| iii. at constant pressure |
Write the statement for Boyle’s law
With the help of the graph answer the following -
At constant temperature, the Graph shows the relationship between pressure and volume. Represent the relation mathematically.
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?
At what temperature the volume of a gas becomes absolutely zero?
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)
10 g of gas at one atomospheric pressure is cooled from 273.15°C to 0°C keeping the volume constant. What is the final pressure?
