Question

Recycling one empty aluminum can saves enough energy to keep a 100-

watt bulb burning for almost 4 hrs

Applying your understanding of quantitative electrochemistry, show how you would

calculate the answer to the statement written.

Answer 1

The aluminium can are made by small and flexible aluminium palletes, which are then prepared by heavy dye and electrochemical coating for keeping the drink/liquid contamination free and safe to consume.

So, the processes of electrochemistry requires machinery, pressure pumps and prepared chemical and all these uses certain amount of energy to function, the complete setup of the electrochemical process on a Aluminium can consumes on an average 380-500 Watts of energy.

And thus, the statement "Recycling one empty aluminum can saves enough energy to keep a 100-watt bulb burning for almost 4 hrs" fits very well, as 100-watt bulb buring for 4 hours would approximately comsumes 100*4 = 400 Watts of energy, which is in between of energy required by the machinery of the electrochemical process on Aluminium can.

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