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Q26. At what temperature does the root-mean-square speed of H2 equal the escape speed from the...

Q26. At what temperature does the root-mean-square speed of H2 equal the escape speed from the Moon? The mass of H2 molecule is 3.32x10-27kg.

(A) -30°C

(B) 28°C

(C) 179°C

(D) 450°C

(E) 1027°C

Q27. A container holds a mixture of 1 mol of monoatomic gas and 2 mol of diatomic gas at room temperature. What is the molar specific heat of the mixture?

(A) 12.5 J/mol×K

(B) 18.0 J/mol×K

(C) 20.8 J/mol×K

(D) 23.5 J/mol×K

(E) 29.1 J/mol×K

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