If a weather balloon has a volume of 114 liters at 1 atm, then what would the volume of the balloon be if the meteorologist wants to float it at an altitude of 35,000 meters where the pressure is 0.61 atm?

1.06 L
187 L
70 L

Question

If a weather balloon has a volume of 114 liters at 1 atm, then what would the volume of the balloon be if the meteorologist wants to float it at an altitude of 35,000 meters where the pressure is 0.61 atm? 



1.06 L
187 L
70 L

aaronq · Answer

you can use PV=nRT

since n, R, and T  are held constant (implicitly given in the question)

you can say that P and V of one system are equal to the P and V at another, thus:

$$P _{1}V _{1}=P _{2}V _{2}$$

plug in the values you were given and solve

aaronq · Answer

if you think of this logically, if you have a balloon and you decrease the pressure surrounding it, it will expand, right?