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steffanie1995 Group Title

CHEMISTRY PEOPLE PLEASE HELPP!! WILL GIVE A MEDAL!

  • one year ago
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  1. steffanie1995 Group Title
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    Give the sign of the electrodoes and the reaction that occurs at each for both voltaic and electrolytic cells. Anyone? ^^

    • one year ago
  2. kateyausen Group Title
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    Hey! So positive electrodes attract negative electrons form an outside source, so for electrolytic cells, both positive and negative electrodes exist in the cell and all charged energy is attracted to the polarized surface.

    • one year ago
  3. kateyausen Group Title
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    I hope that helps!

    • one year ago
  4. steffanie1995 Group Title
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    Thanks. it's for a practice test and i dodn't know it so this is the answer?

    • one year ago
  5. kateyausen Group Title
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    Yes :)

    • one year ago
  6. kateyausen Group Title
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    Good luck with the rest of the test!!

    • one year ago
  7. steffanie1995 Group Title
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    I have a another question I don't know.. Could you help?

    • one year ago
  8. steffanie1995 Group Title
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    Describe how a fuel cell works.

    • one year ago
  9. kateyausen Group Title
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    Fuel cells are based on the controlled reaction of hydrogen and oxygen which efficiently generates electrical power and heat.

    • one year ago
  10. Whiterabbit541 Group Title
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    In a voltaic cell (one that happens spontaneously), electrons flow from a negative electrode to a positive electrode (anode ==> cathode). The reaction that happens is a redox reaction where the anode is oxidized (goes from a solid to an ion) and the cathode is reduced (going from an ion to a solid). An electrolytic cell is the same but in complete reverse. The only difference is that an electrolytic cell uses an electric current to make a reaction happen that otherwise wouldn't happen (is not spontaneous).

    • one year ago
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