Argon gas (molar mass = 39.9 g mol⁻¹) is at 400 K

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

Argon gas (molar mass = 39.9 g mol⁻¹) is at 400 K. At what temperature must xenon gas (molar mass = 131 g mol⁻¹) be so that the two gases have the same root-mean-square speed? Give your answer to three significant figures.

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