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1 mole of PbS is oxidised by X moles of O 3 to get Y moles of O 2 . X + Y =

Correct answer

8

Step-by-step solution

Given that, 1 mole of PbS is oxidised by X moles of O 3 to get Y moles of O 2 . The balanced chemical equation can be written as, PbS + 4 O 3 → PbSO 4 + 4 O 2 Here x = 4 , y = 4 Hence, X + Y = 4 + 4 = 8

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