Question

Which one of the following is a balanced equation?

Answer 1

D. 2Na (s) + MgF2 → 2NaF (s) + Mg (s)

Explanation:

From the given choices, 2Na (s) + MgF2 → 2NaF (s) + Mg (s) is balanced

A balanced equation is one that obeys the law of conservation of matter which states that "matter is neither created nor destroyed but transformed from one form to another".

We expect to find the same name of atoms on both sides of the equation.

 let us examine the choices;

                     Zn (s) + HCl (g) → ZnCl2 (s) + H2 (g)

      Reactants                      Products

Zn          1                                      1

H            1                                     2

Cl            1                                    2

Na (s) + O2 (g) → Na2O

                Reactants                         products

Na                   1                                        2

O                     2                                        1

Na (s) + MgF2 → 2NaF (s) + Mg (s)

                 Reactants            products

Na                   1                             2

Mg                   1                             1

F                      2                             2

2Na (s) + MgF2 → 2NaF (s) + Mg (s)

                   Reactants               products

Na                     2                             2

Mg                     1                              1

F                        2                              2

learn more:

Balanced equation brainly.com/question/2947744

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