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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: ticmmae on December 06, 2009, 08:15:14 PM

Title: Zinc-air battery problem???
Post by: ticmmae on December 06, 2009, 08:15:14 PM

Air Cathode
Zinc Anode

Net transformation: Zn(s) + 0.5O2(g) -> ZnO(s)

C) What is the energy density (measured as energy in kJ that can be obtained from 1 kg of the metal) of the zinc electrode?

D) If a current of 2.1 x 10^5 A is to be drawn from a zinc-air battery system, what volume of air (in liters) would need to be supplied to the battery every second? Assume the temperature is 25 Celsius and a partial pressure of oxygen is 0.21 atm.

Thanks!

Title: Re: Zinc-air battery problem???
Post by: ticmmae on December 06, 2009, 08:41:08 PM

I actually got D can anyone help me on C

Title: Re: Zinc-air battery problem???
Post by: ticmmae on December 06, 2009, 11:25:02 PM

nvm. I got it.