Helium gas in a vessel is at 400 K

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

Helium gas in a vessel is at 400 K. At what temperature must N₂(g) be so that its molecules have the same root-mean-square speed as the He atoms? (a)

3200\ \text{K}

(b)

5600\ \text{K}

(c)

2800\ \text{K}

(d)

2000\ \text{K}