We have to to a report in our chemisty class on heating houses. One aspect is the window. Our teacher says that good windows are filled with argon becuase they have a high specific heat. but looking on the internet I seem to find the specific heat of argon to be about 520 J/kgC which is relatively low, but my teacher says it is very close to Helium which is 5250 J/KgC this seems to be off by a factor of ten. Which is right? it seems that helium and argon would be close to the same as they are both noble gases and are very close on the Table, so they should share very similar properties. Thanks for your help.