Why mercury is generally used as a liquid in barometer?

72.

State Boyle's law. How this law is expressed mathematically?

How will you represent the Boyle's law graphically in different ways?

Why does the volume of a gas decrease on increasing pressure?

A weather balloon has a volume of 175 L when filled with hydrogen at a pressure of 1.00 bars. Calculate the volume of the balloon when it rises to a height of 2000m, where the atmospheric pressure is 0.80 bar. Assume that the temperature is constant ?

A balloon is filled with hydrogen at room temperature. It will burst if the pressure exceeds 0.2 bar. If at 1 bar pressure, the gas occupies 2.27 L volume, up to what volume can the balloon be expanded?

What will be the minimum pressure required to compress 500 dm³ of air at 1 bar to 200 dm³ at 30C?

A vessel of 120 mL capacity contains a certain amount of gas at 35°C and 1·2 bar pressure. The gas is transferred to another vessel of volume 180 mL at 35°C. What would be its pressure ?

A gas occupies a volume of 300 mL at 740 mm Hg at 20°C. What additional pressure is required to reduce the gas volume to 250 ml at 20°C?

What pressure must be applied to a given sample of a gas in order to compress it to three-fourth of its original volume ?