A 10L cylinder has helium at 8 atm and
32°C. How many balloons of 2L each at
2 atm and 32° C can be filled with the
gas available from the cylinder
Answers
Answer:
Since the equation is PV =RT, where P is pressure, V is volume, T is temperature and R is gas constant. This equation can be written as
PV/T = R = constant
This ratio applies to all pressure, volume, and temperature. So this equation can be expanded as
(P1 V1) / T1 =n*(P2V2)/T2 = R= Constant
Now Plug in values as V1 = 10 litres, P1 = 8 ATM, T1= 32 C , V2 = 2 liter, P2= 2ATM, T2= 32C
(8*10)/32 = n (2*2)/32
80/4 = n
20 = n
So 20 ballons can be filled using that gas.
Answer:
answer should be 15
Explanation:
The PV of balloon = 2 × 2 = 4 lit-atm
Gas from the cylinder is available to fill in the
balloons, until its pressure drops from 8atm to
2atm.
The PV of helium available = 10 × (8-2) = 60 lit-atm
Number of balloons filled=
PVof the gasavailable
PVof the balloon
=
60/4
= 15