A balloon filled with helium gas has a volume of 500 ml at a pressure of 1 atm. The balloon is released and reaches a high altitude where the pressure is 0.5 atm. If the temperature has remained the same, what volume does the pas occupy at this heigh?

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? ?

hurricanes form in warm water