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Which chemical equation is unbalanced? C + O2 mc024-1.jpg CO2 Sr + O2 mc024-2.jpg 2SrO 6H2 + 3O2 mc024-3.jpg 6H2O H2 + H2 + O2 mc024-4.jpg H2O + H2O

Respuesta :

The correct answer would be the second option. It is the reaction Sr + O2 = 2SrO that is not balanced correctly. To be able to say that an equation is balanced, it should be that the number of each atom in the reactant and the product side is equal. As we can see, at the reactant side there is only one Sr while in the product there are 2 Sr atoms.
Sr + O2--->2SrOis the right answer