Using van der Waals' gas equation calculate the pressure exerted by 8.5 g of NH_3 contained in 0.5 L vessel at 

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Q 3173112946.     Using van der Waals' gas equation calculate the
pressure exerted by 8.5 g of NH_3 contained
in 0.5 L vessel at 300 K. For ammonia,
'a'= 4.0 atm L^2 mol^(-2) , 'b' = 0.036 L mol^(-1)`.

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