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13 June, 14:37

26 g of zinc combines with 12.8 g of sulfur. What is the empirical formula of zinc sulfide?

A. Zn2S2

B. ZnS2

C. ZnS

D. Zn2S

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Answers (1)
  1. 13 June, 15:09
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    Moles of Zn: 26 / 65 = 0.4

    Moles of S: 12.8 / 32 = 0.4

    Molar ratio of Zn : S = 1 : 1

    Empircal formula: ZnS

    The answer is C
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