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29 August, 19:11

For the skeletal chemical equation Fe2P (s) + S (s) → P4S10 (s) + FeS (s) what is the coefficient of P4S10 in the balanced equation? (Balance the equation with the smallest possible whole number coefficients.) 1. 6 2. 18 3. 9 4. 2 5. 5 6. 10 7. 3 8. 4 9. 8 10. 1

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  1. 29 August, 19:36
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    Option 10. 1

    Explanation:

    The unbalanced equation is:

    Fe₂P (s) + S (s) → P₄S₁₀ (s) + FeS (s)

    In order to balance P, we can add 4 to the Fe₂P.

    The addition made that we get 8 Fe now, in the reactant side, so we add 8 to FeS in product side.

    We count the sulfur, 10 from the P₄S₁₀ + 8 from the FeS = 18

    We add 18 to the S in the reactant side. Balanced equation is:

    4Fe₂P (s) + 18 S (s) → P₄S₁₀ (s) + 8 FeS (s)
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