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A binary compound of zinc and sulfur contains 67.1% zinc by mass. What is the ratio of zinc and sulfur atoms?

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  1. one to one

    ZnS

    67.1 grams Zinc @ a molar mass of 65.39

    = 1.03 moles Zn

    32.8 grams Sulfur @ a molar mass of 32.07 g/mol

    = 1.02 moles S

    your answer is 1 mole Zn to 1 mole Sulfur

    .

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