Help would be awesome.
Which chemical equation best illustrates the Law of Conservation of Mass?

3LiOH + Fe(NO3)3 yields LiNO3 + Fe(OH)3
2NaCl + CaO yields Na2O + CaCl2
Zn + HCl yields ZnCl2 + H2
Mg + HCl yields MgCl2 + H2

Question

Help would be awesome.
Which chemical equation best illustrates the Law of Conservation of Mass?
 	
	3LiOH + Fe(NO3)3 yields LiNO3 + Fe(OH)3
	2NaCl + CaO yields Na2O + CaCl2
	Zn + HCl yields ZnCl2 + H2
	Mg + HCl yields MgCl2 + H2

jfraser · Answer

chemical equations illustrate the law of conservation of mass by being balanced.

kaylaprincess · Answer

Says right here : The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. 

So, nothing is really going to be changed?

callielovesyhuu · Answer

mass cannot be created nor destroyed

kaylaprincess · Answer

Yes, but how do figure out what the answer is now though?

kaylaprincess · Answer

@JFraser

kaylaprincess · Answer

...

jfraser · Answer

which reaction is balanced?

which reaction has the same number of each kind of atom on both sides of the arrow?