Question

If the kinetic energy of the molecules in \(8.0\,\text{g}\) methane at \(47^\circ\text{C}\) is \(x\,\text{kJ}\), then the kinetic energy (in kJ) of the molecules in the same amount of dihydrogen at \(127^\circ\text{C}\) is

• A. \(x\)
• B. \(5x\)
• C. \(10x\)
• D. \(20x\)

Hint:

For an ideal gas, \[ \boxed{ K=\frac32nRT. } \] Therefore, \[ \boxed{ K\propto nT. } \] Always convert temperature into Kelvin before substitution.

Answer 1

The Correct Option is C