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9 January, 20:15

Which one of the following is a balanced equation?

A. Na (s) + MgF2 → 2NaF (s) + Mg (s)

B. 2Na (s) + MgF2 → 2NaF (s) + Mg (s)

C. Na (s) + O2 (g) → Na2O

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

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Answers (1)
  1. 9 January, 21:08
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    Among these Options the Option B contains a Balance chemical equation. Equation is as follow,

    2Na (s₎ + MgF ₂ → 2NaF (s₎ + Mg (s₎

    There are two Na atoms (or moles) at right hand side and two at left hand side.

    There are two F atoms (or moles) at right hand side and two at left hand side.

    There is one Mg atom (or mole) at right hand side and one at left hand side.
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