When balancing chemical equations, make sure that the number of atoms in the reactants is equal to the number of atoms in the products.
Let's start by balancing the S in the reactants and products. Balance the lone atom last, because it would be easier to balance it since no other atom will be affected once its coefficient changes.
Write balanced equation for the following by inserting the correct coefficients in the blanks:
(a) __Cu(s) + __S8(s) ⟶__Cu2S(s)
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.