Calculate the velocity of sound in moist air at `27^(@)C` and `0.7 m` pressure. The dew point is `15^(@)C`. The saturated vapour pressure at `15^(@)C` is `17 mm` of mercury and velocity of sound at `0^(@)C` in dry air is `330 m s^(-1)`.

Calculate the RMS velocity of chlorine molecules at 17^(@)C and 800 mm pressure.

Calculate the velocity of sound in air saturated with moisture at 25^(@)C and 745 mm pressure. The saturation pressure at 25^(@)C is 23.76 mm of mercury and the velocity of sound at 0^(@)C in dry is 332 m s^(-1) . [Hint: See example 4.]

Calculate RMS velocity of ethane at 27^@ C and 720 mm of Hg pressure.

Calculate the mass of 1 litre of moist air at 27^(@)C when the barometer reads 753.6mm of mercury and the dew point is 16.1^(2)C . Saturation vapour pressure of water at 16.1^(@)=13.6mm of mercury, density of air at STP =0.001293g(cc)^(-1 , density of saturated water vapour at STP=0.000808g(cc)^(-1) .

The velocity of sound in air at 27^(@)C is 330 m/s. the velocity of sound when the temperature of the gas is raised to 227^(@)C is

If the velocity of sound in air at 0^(@)C " is " 332 ms^(-1) , its velocity at 30^(@)C is

Calculate the velocity of sound on a day when relative humidity is 80% and tamperature and pressure are respectively 25^(@)C and 0.68 m of mercury. (velocity of sound at STP=332 m s^(-1) . Saturated vapour pressure at 25^(@) is 0.026 m of mercury.)

On a winter day, the outside temperature is 0^(@)C and relative humidity 40%.The air from outside comes into a room and is heated to 20^(@)C. What is the relative humidity in the room? The saturated vapour pressure at 0^(@)C is 4.6mm of mercury and at 20^(@)C it is 18mm of mercury.