Answers

2014-08-23T15:20:05+05:30
Let n numbers of flask required 
20liters = 20000cm³
apply boyel's law
P1V1 == P2V2
P1 = 100 atm 
V1 = 20000cm³
P2 = 1 atm
V2 = n*200cm³
100*20000 = 1*n*200
n = 10000
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