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. Which chemical equation best illustrates the Law of Conservation of Mass?. . 2H2O = H2 + O2. . CH4 + 3O2 = CO2 + 2H2O. . Al4C3 + 3H2O = CH4 + 4Al(OH)3. . Zn + 2HCl = ZnCl2 + H2 . . Could you help explain?

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Ricky2000
The law of conservation of mass states that in a chemical reaction, atoms cannot be created nor destroyed.

Zn + 2HCl > ZnCl2 + H2 is the best example of this law because the equation is balanced and has the same amount of each atom on both sides.
kenmyna

The best equation which illustrate the law of conservation of mass is

Zn +2 HCl --> ZnCl2 + H2

This is because the mass of the product is equal to the mass of reactant. for example the mass of Zn is 1 in the reactant and product side. According to the law of mass conversation the mass in a isolated system is neither created nor destroyed by chemical reaction or physical transformation

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