I follow battleship New Jersey on YouTube. One of the recent topics is how the hull around the propellers can corrode more than other areas of the hull. Because of this, the navy installed sacrificial anodes.
Why would a large ship corrode around the propellers more. How to anodes prevent this?
In: Chemistry
If you have a bunch of metal in salt water you make a junky battery. The battery runs down by ruining the metal. If the metal is something important like a ship you hate that, so you intentionally make a better battery by adding some zinc so that can run down and get ruined instead.
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