When thermal energy is added to a partially deflated balloon, what happens to the mass of the balloons?

i'm pretty sure its b i might be wrong though!

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

yes the answer is total mass in unchanged   : )