Helium gas at STP has a thermal speed a) 1.07 x 103 m/s, b) 1.70 x...

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Helium gas at STP has a thermal speed a) 1.07 x 103 m/s, b) 1.70 x 106 m/s, c) 8.70 x 103 m/s, or d) 1.30 x 103 m/s.

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