Solve number 5, please

Solution:

5)
$B y u \sin g t h e f o r m u l a f o r i d e a l g a s e q u a t i o n, P V = n R T W h e r e, P i s p r e s s u r e V i s v o l u m e n i s n u m b e r o f m o l e s R i s u n i v e r s a l g a s c o n s \tan t T i s t e m p e r a t u r e A c c o r d i n g t o t h e q u e s t i o n, n R T w i l l b e c o n s \tan t . S o, P \propto \frac{1}{V} H e n c e, p r e s s u r e i s t h e m e a s u r a b l e p a r a m e t e r o f g a s e s .$

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