Question

A weather balloon filled with hydrogen at 1 atm and 27°C has volume equal to
12000 litres. On ascending it reaches a place where temperature is - 23°C and
pressure is 0.5 atm. The volume of the balloon is
A) 24000 litres B) 20000 litres C) 10000 litres D) 12000 litres
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Answer 1

Answer 20000

Explanation:

P1V1/T1=P2V2/T2

V2=12000/300X250/0.5