Remarks Remember the trick used in part (b); it\'s often useful in ideal gas pro
ID: 1395912 • Letter: R
Question
Remarks Remember the trick used in part (b); it's often useful in ideal gas problems. Notice that it wasn't necessary to convert units from liters to cubic meters because the units were going to cancel anyway.
Question Assuming constant temperature, as a helium balloon rises through the air: (Select all that apply.)
The air pressure outside the balloon increases. The air pressure inside the balloon increases. The volume of the balloon decreases. The air pressure outside the balloon decreases. The air pressure inside the balloon decreases. The volume of the balloon increases.
Explanation / Answer
the ideal gas equation is
PV = n*RT
for constant temperature , for a given amount of gas
PV = constant ,
as a ballon rises in altitude , the pressure(atmospheric) outside the ballon decreases
as pressure inside the balloon = pressure outside the balloon
hence , the pressure inside the balloon decreases.
as PV = constant
for decrease in P ,
the volume of balloon will increase
the correct options area :
The volume of the balloon increases.
The air pressure outside the balloon decreases