A flask has a volume of 0.25dm3 .what volume of air will be displaced from the flask if it is heated from 300 K to 360 K

solution 
V1 = 0.25dm3 
T1 = 300k
T2 = 360k
V2  = ?

By chares law
V2 = (V1*T2)/T1

​V2 =0.25*360/300

V2 =0.3dm3

volume of air will be displace from the flask if it is heated is the differance between two volume 
=0.3-0.25
=0.05

 
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0.05
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