STP पर 4.5 kg जल में मौजूद अणुओं द्वारा घेरा गया आयतन, यदि अंतराआणविक बल समाप्त हो जाएं, तो लगभग कितना होगा?

A flask contains argon and chlorine gas mixture. The temperature of the mixture is 27 °C. The ratio of the root mean square speed of the molecules of the two gases vrms(Ar)vrms(Cl2) is: (Atomic mass of argon = 40.0 u and molecular mass of chlorine = 70.0 u)

If the root mean square speed of oxygen molecules at 300 K is approximately 483 m/s, what is the rms speed at 1200 K?