Q. If temperature of 1 mole of gas is increased by $50℃,$ calculate the change in kinetic energy of the system.
A) 623.25 J
B) 6.235 J
C) 623.5 J
D) 6235.0 J
Explanation
(a)
$\ \ \ KE = \frac{3}{2}\ RT$ for 1 mole of gas
$\mathrm{\Delta}KE = \frac{3}{2} \times 8.315 \times (50 - 0)$
$\ \ \ \ \ \ \ \ \ = \frac{3}{2} \times 8.315 \times 50$
$\ \ \ \ \ \ \ \ = 623.25\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.