Molecular Speeds: A sealed container holds 0.020 moles of ideal nitrogen (N2) gas, at a pressure of 1.5 atm and a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol. What is the average translational kinetic energy of a nitrogen molecule? The Boltzmann constant is 1.38 × 10-23 J/K.
A. 4.0 × 1021 J
B. 6.0 × 1021 J
C. 8.0 × 1021 J
D. 10 × 1021 J
E. 12 × 1021 J
Answer: B
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