A tank used for filling helium balloons has a volume of 0.3m3 and contains 2mol of helium gas at 20∘C. Assuming that the helium behaves like an ideal gas, find the total translational kinetic energy of the molecules of the gas
A
7.3kJ
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
10kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
3.65kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
2.4kJ
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A7.3kJ Given, n=2mol,T=273+20∘C=293K
Total translational kinetic energy (KE)trans=32nRT (∵ Helium is monoatomic) =32×2×8.31×293 =7.3×103J (or) 7.3kJ