Can someone help me, I don’t understand this exercise. Its give another answer. Something like 6.6443×10^27, too low. But the real answer is 2364oC
1 Answer

Formula for RMS velocity(C) is
C=sq.rt(3RT/M)
So, C directly proportional to T in kelvin(273+20=293)
So, C1/C2=T1/T2
C2=C1XT2/T1
3C1=C1XT2/T1
3=T2/T1
T2=3XT1
T2=3×293
T2=2637k=(2637273)=2364oC