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2 November, 13:44

Complete and balance the equation for the combustion of zns in excess oxygen? zns + ? o2→? zno + ? use no fractional coefficients. the number of moles and the formula of the product containing s are

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  1. 2 November, 16:16
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    The combstion of ZnS in excess oxygen gives ZnO and SO₂ as the products.

    hence the equation should be;

    ZnS (s) + O₂ (g) →ZnO (s) + SO₂ (g)

    At the left hand side: At the right hand side:

    number of Zn atoms = 1 number of Zn atoms = 1

    number of S atoms = 1 number of S atoms = 1

    number of O atoms = 2 number of O atoms = 3

    Hence the balanced equation is;

    2ZnS (s) + 3O₂ (g) →2ZnO (s) + 2SO₂ (g)
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