The average translational kinetic energy of O2 (relative molar mass 32) molecules at a particular temperature is 0.048eV. The translational kinetic energy of N2 (relative molar mass 28) molecules in eV at that same temperature is?
- 0.048
- 0.768
- 0.003
- None of these
Explanation
The average translational kinetic energy of a molecule is given by:
(3/2)kT = (3/2) × (1.38 × 10^-23 J/K) × T
Since the temperature is the same for both O2 and N2 molecules, the average translational kinetic energy will be the same:
0.048 eV = (3/2)kT
The mass of the molecule does not affect the average translational kinetic energy.
Therefore, the translational kinetic energy of N2 molecules at the same temperature is also:
0.048 eV
Related MCQs
- Substitution reaction
- Endergonic reaction
- Exergonic reaction
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
بیریم ہائیڈرو آکسائیڈ کے پتلے محلول میں ہائیڈروکلورک ایسڈ کا پتلا محلول شامل کرنے سے کیا نتیجہ نکلے گا؟
- Formation of black precipitates
- Increased concentration of hydroxide ions
- Increased concentration of hydrogen ions
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
ریسنگ کاروں کو زیادہ مستحکم بنانے کے لیے کیا کیا جاتا ہے؟
- Lowering their centre of gravity
- Increasing their speed
- Decreasing their mass
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
- 110 J
- 120 J
- 115 J
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
قوتوں کا جوڑا کن قوتوں سے بنتا ہے؟
- Two equal and opposite forces in the same line
- Two forces perpendicular to each other
- Two equal and opposite forces not in the same line of action
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
