Question

What is the density Ïh of hot air inside the balloon? assume that this density is uniform throughout the balloon. express the density in terms of th, tc, and Ïc?

Answer 1

According to your formula, because Th>Tc, the density of hot air greater than the density of cold air.Hint: You can rearrange the ideal gas law to get 


Reference https://www.physicsforums.com/threads/density-of-hot-air.528991/