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| Saltwater A to be used in a circuit (electrolysis) |
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| Distilled water B to be used in a circuit (electrolysis) |
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| Saltwater sprayed C - significant rust. Note saltwater and distilled water marked nails (C and D) have been set up and sprayed before A and B, more rust will be evident. |
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| Distilled water D sprayed - slight rust |
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