There are two steps in the extraction of copper metal from chalcocite, a copper ore. In the first step, copper(I) sulfide and oxygen react to form copper(I) oxide and sulfur dioxide: 2Cu2Ss + 3O2g + 2Cu2Os -> 2SO2g In the second step, copper(I) oxide and carbon react to form copper and carbon monoxide: Cu2Os + Cs + 2Cus -> COg Suppose the yield of the first step is 94.%  and the yield of the second step is  74.% . Calculate the mass of copper(I) sulfide required to make  6.0kg  of copper.

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Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.