A 5.00 L balloon is partially filled with He at the foot of Mt. Everest where the ambient pressure is 0.95 atm and 24ºC. The balloon is going to be taken to the top of the mountain where the air pressure is 0.64 atm and temperature is -10ºC. To what volume should the balloon be filled at the base of the mountain so that it is fully inflated at the top?