Question

find the mass of 100 cm cube of a gas at NTP if the RMS velocity of a gas molecule is 500 metre per second one atmospheric pressure is equal to 1.013×10^3​

Answer 1

Answer:

rms velocity of M2 at 11TP=V1=1.84km/s

as, V1=M13RT→(1)               M1= molar man of H2=0.002 kg/moL

and that of oxygen (O2)

V2=M23RT→(2)                M2=0.032 kg/moL

so dividing (1)÷(2),

V2V1=M1M2⇒V2=V1M2M1

⇒V2=1.84×322=1.84×41=0.46km/s.