Answer
1.22
Work Step by Step
The rms speed is given by equation 13–9. Use kelvins to measure the temperatures.
$$\frac{v_{rms,2}}{v_{rms,1}}=\frac{\sqrt{3kT_2/m}}{\sqrt{3kT_1/m}}=\sqrt{\frac{T_2}{T_1}}=\sqrt{\frac{433K}{293K}}=1.22$$
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