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Stoichiometric Calculations

FeS2 + O2→Fe2...

Question

$F e S_{2} + O_{2} \to F e_{2} O_{2} + S O_{2}$
FInd the Sum of the coefficient of reactants and products.

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Solution

$F e S_{2} + O_{2} ⟶ F e_{2} O_{2} + S O_{2}$
After Balancing:
$2 F e S_{2} + 5 O_{2} ⟶ F e_{2} O_{2} + 4 S O_{2}$
Sum of coefficient of reactant $= 2 + 5 = 7$
Sum of coefficient of products $= 1 + 4 = 5$

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