a spherical ballon of 21 cm diameter is to be filled up with h2 at ntp from a cylinder containing gas at 20 atm at 27 c . the cylinder can hold 2.82lt of water . the number of ballons that can be filled up

11

10

8

1

100 ml o2 diffuses in 10 secs. 100 ml of gas x diffuses in time t. gas x and time t can be

h2,2.5sec

so2, 16s

co, 10s

he,4s

How to solve?