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20 February, 03:39

Which of the following equations are balanced?

CO + 3H2 - -> CH3OH

PCl3 + 2Cl2 - -> PCl5

2KClO3 - -> 2KCl + 3O2

Mg + N2 - -> Mg3N2

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  1. 20 February, 04:02
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    The only balanced equation is:

    2KClO₃ → 2KCl + 3O₂

    Explanation:

    In reactant side: 6 atoms of O, 2 atoms of Cl and 2 atoms of K

    In product side: 2 atoms of K and 2 atoms of Cl + 6 atoms of O

    CO + 3H₂ → CH₃OH

    In reactant side: 1 C, 1 O and 6 H

    In product side: 1 C, 4 H and 1 O

    PCl₃ + 2Cl₂ → PCl₅

    In reactant side: 1 P, 7 Cl

    In product side. 1 P, 5 Cl

    Mg + N₂ → Mg₃N₂

    In reactant side 1 Mg and 2 N

    In product side 3 Mg and 2 N
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