Asked by nkrbasak | 19th Sep, 2010, 12:17: PM

Expert Answer:

Law of conservation of mass is also applicable to gases
For example:
2Na + 2HCl-> 2NaCl  + H2
In this equation 46 g (23 x2 ) of sodium reacts with 73 (2{ 1 + 35.5}) g of HCl to produce 117 g(2{23+35.5)} of NaCl and 2 g of hydrogen gas
Since ,mass of reactants is equal to mass of products hence law of conservation of mass holds true.

Answered by  | 19th Sep, 2010, 05:49: PM

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