Physics Homework Solutions
#34128
Reactions with Ni precipitate and a problem concerning Boiling/Cold water for fan movement
I have two solutions one is green with Ni 2+ in it and the other is colorless. When the colorless solution is poured into the Ni2+ solution there is a red precipitate that forms. What is the red precipitate?
I have two cups one is filled with hot water and the other is filled with cold water. THere is a split copper wire connected to a fan. Each end of the copper wire is put in the two seperate cups and the fan spins. When the cold water is poured into the hot water cup and the copper wire is put in the new cup, the fan doesnt spin. Why?
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