Respuesta :
Answer : The correct option is, A, B and D
Explanation :
Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.
(A) [tex]4Na(s)+O_2(g)\rightarrow 2Na_2O(s)[/tex]
(B) [tex]2Mg(s)+O_2(g)\rightarrow 2MgO(s)[/tex]
(C) [tex]C_3H_8(g)+O_2(g)\rightarrow CO_2(g)+H_2O(g)[/tex]
(D) [tex]C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)[/tex]
From the given reactions, the reaction A, B and D are the balanced chemical reactions because in this reactions the number of atoms of individual elements present in the reactant side are equal to the product side.
While in reaction C the number of individual elements are not equal on both the sides. So, this reaction are not balanced reaction.
Hence, the correct balanced reaction are, A, B and D
