Speaker two That’s excess. We’ve got excess! Success! Speaker one Next we’re going to make the crystals from the copper sulfate by removing the excess copper oxide. Now, as copper oxide is ...

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Make a copper II sulfate solution by adding 20g of copper II sulfate to 200 mL of water. Pour about 25 mL of copper II sulfate solution into a cup for each group. Cut aluminum foil into pieces big ...