1.

Density of a gas at one atm pressure is 1.43xx10^(-2)g c c^(-1). Calculate the RMS velocity of the gas.

Answer»

Solution :DENSITY`=d= 0.0143g c c^(-1)`
Pressure`=P=1atm= 76cmHg= hd g `
` = 76 XX 13.6 xx 980.6`
` = 1.0133 xx 10^6g cm^(-1) s^(-2)`
RMS velocity (C ) `= sqrt(( 3 P)/( d))`
Substituting the VALUES, RMS velocity of the gas = ` sqrt((3 xx 1.0133 xx 10^6 )/(0.143 ) ) = 4.16 xx 10^4cms^(-1)`
` =461ms^(-1)`


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