At what temperature do hydrdogen molecule have the same rms speed as nitrogen molecule at 455 degree celsius

Answer 1

change temps to kelvins.

Now, if they have the same rms speed, temp is dependent on mass

Temp=constant*m (vrms)^2

TempH2=constant*2(Vrms)^2
TempN2=constant*28(vrms)^2

tempH2=constant*2(tempN2/(28*constant)

tempH2=(455+273)/14 Kelvins