At What Temperature Is the Rms Speed of Hydrogen Molecules $\mathrm { H } _ { 2 }$

question 44

Multiple Choice

At what temperature is the rms speed of hydrogen molecules, $\mathrm { H } _ { 2 }$ which have a molecular weight of 2.02 g/mole, equal to 2.0 km/s? The Boltzmann constant is $1.38 \times 10 ^ { - 23 } \mathrm {~J} / \mathrm { K } \text { and } N _ { \mathrm { A } } = 6.022 \times$ $10^{23}$ molecules/mol.

• A) \(17 ^ { \circ } \mathrm { C }\)
• B) \(51 ^ { \circ } \mathrm { C }\)
• C) \(72 ^ { \circ } \mathrm { C }\)
• D) \(34 ^ { \circ } \mathrm { C }\)
• E) \(68 ^ { \circ } \mathrm { C }\)

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