In each of these equations, identify the element which gets reduced and the element which gets oxidized. Mg + Cu(NO3)2 → Mg(NO3)2 + Cu CuO + H2 → Cu + H2O Cl2 + S → SCl2 6Li + N2 → 2Li3N 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu 3 CaO + 2Al → Al2O3 + 3Ca

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

it's c. elements are placed in rows based on how may valencies electrons have.

yes

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