the net transformation is Zn(s)+1/2O2(g)=> ZnO(s) calculate the emf under actual

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the net transformation is Zn(s)+1/2O2(g)=> ZnO(s) calculate the emf under actual operating conditions when thepartial pressure of O2 is 0.21 atm. (book gives answer as 1.63V buti dont know how to do it) b)what is the energy density (measured as the energy in kJthat can be obtained from 1kg of the metal) of the zinc electrode?(answer: 4.87x10^3 kJ/kg c)if a current of 2.1x10^5A is to be drawn from a zinc-airbattery system, what volume of air in L would need to be suppliedto the battery every second? assume the temperature is 25C and thepartial pressure of O2 is 0.21 atm.

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