Chapter 18, Problem 18.42E

For a gas of nitrogen molecules (N₂), what must the temperature be if 94.7% of all the molecules have speeds less than (a) 1500 m/s; (b) 1000 m/s; (c) 500 m/s? Use Table 18.2. The molar mass of N₂ is 28.0 g/mol.