Before the electrolysis, the masses of the electrodes were determined. After the electrolysis, the electrodes were washed and dried and their masses re-determined. Figure 6 shows these masses and the resulting changes in masses of the electrodes. Explain these results. – 9020

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Q1 

Before the electrolysis, the masses of the electrodes were determined. 

After the electrolysis, the electrodes were washed and dried and their masses re-determined. 

Figure 6 shows these masses and the resulting changes in masses of the electrodes.

Explain these results. (4)

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