what is the root mean square speed of CO2 at 34 degrees C?

Answer 1

The RMS velocity of an ideal gas is calculated using the following equation: V(rms) = sqrt(3RT/M)
where R = 8.314 J/(K*mol) = 8.314 kg*(m/s)^2/(K*mol),
T the temperature in K, in this case T = 307K.
M the molar mass in kg/mol. In this case M = 0.044 kg/mol.
V the rms velocity in m/s.
sqrt means the square-root-of
You do the math.