If zinc has a density of 7.14 g/cm³, (a) what mass of zinc is required to cover a plate of iron that is 150 cm x 325 cm with a zinc coat that is 0.5 cm thick? There is a current of 70 A being supplied to the solution (b) how long will it take to create a coat of that depth?

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Q: Q/HDI 1 2 0₂N- OH NO₂ NO₂ NH₂

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Q: Give 5 scientists and their contribution to analytical chemistry.

A: Name of the scientific and their contribution in analytical chemistry is given below.

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.