T2B6 is giving me some trouble how do I find the temperature

T2B.6 is giving me some trouble how do I find the temperature?

T2B.4 Consider a gas whose molecules havé at avlub netic energy of l eV Whatis the temperature of the gas? T2B.5 Find the rms speed of CO, molecules in a room at room temperature (295 K). (Carbon atoms have 12 and oxygen atoms have 16 nucleons in their nuclei.) T2B.6 The rms speed of Cly molecules in a sample of gas is about 180 m/s. What is the temperature of the gas? (Chlorine atoms have 35 nucleons in their nuclei.)

Solution

Molar Mass of Cl₂ is

M=35*2 =70 g/mol

Rms Speed

V_rms =sqrt[3RT/M]

180 =sqrt[3*8.314*T/70*10^-3]

180² = 3*8.314*T/70*10^-3

T=91 K