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In an experiment, 6.700g of hydrogen sulfide is fully decomposed into its elements.If 0.396g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtained?

  • chemistry -

    H2S ==> H2 + S

    mols H2S = grams/molar mass
    mols H2 = mols H2S (from the coefficients).
    g H2 = mols x molar mass. This is the theoretical yield.
    % yield = (0.396/theor yield)*100 = ?

    Then mols H2S x molar mass S x (theor yield/100) = g S.

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