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  4. The mass of 11.2 L of ammonia gas at STP is:

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Q. The mass of 11.2 L of ammonia gas at STP is:

KEAMKEAM 2004States of Matter

Solution:

Molar mass of NH3 = 17 g $ mol^{-1} $
$ \therefore $ 22.4 L of $ NH_3 $ at S.T.P. has mass = 17 g
11.2 L of $ NH_3 $ at S.T.P. has mas = $ \frac{17}{2} $ = 8.5 g