we know,
rms speed, v_rms = sqrt(3*R*T/M)
R --> univerla gas constant
T --> absolute temperature
M --> molar mass
given
M = 20.18 g/mol
= 20.18*10^-3 kg/mol
v_rms = 2.38 km/s
= 2380 m/s
v_rms = sqrt(3*R*T/M)
v_rms^2 = 3*R*T/M
==> T = M*v_rms^2/(3*R)
= 20.18*10^-3*2380^2/(3*8.314)
= 4583 K (or) 4310 degrees Celcius <<<<<<<------------Answer
The escape speed from the Moon is much smaller than from Earth and is only 2.38...
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