Table 1. Fraction f of the molecules in an ideal gas that have a kinetic energy greater than αKav, where Kav is the average kinetic energy.
α | f |
0.50 | 0.685 |
1 | 0.392 |
2 | 0.112 |
3 | 0.029 |
4 | 0.0076 |
5 | 0.0018 |
10 | 1.4 × 10–6 |
15 | 9.4 × 10–10 |
20 | 5.9 × 10–13 |
30 | 2.4 × 10–19 |
40 | 7.7 × 10–26 |
50 | 3.1 × 10–32 |
100 | 1.1 × 10–64 |
A. 1.2 × 104 K
B. 0.8 × 105 K
C. 1.6 × 105 K
D. 2.4 × 105 K
E. 3.2 × 105 K
F. 6.4 × 105 K