Q. 174.3( 3 Votes )

In the chemical r

Answer :

Let the amount of barium sulphate is “x”g

The given reaction is:



According to law of conservation of mass,


Amount of reactants = Amount of products formed


Hence, 20.8g + 14.2g = x + 11.7g


35g = x + 11.7g


x = 23.5g


Thus, the amount of barium sulphate is 23.5g.


The law involved is Law of conservation of mass which states that


the sum of the masses of reactants and products remain unchanged.


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