It seems like there may have been a mistake or confusion in your statement.
Cu(NO3)2 is copper (II) nitrate, CuO is copper (II) oxide, Cu(OH)2 is copper (II) hydroxide, CuSO4 is copper (II) sulfate, and BaSO4 is barium sulfate.
These compounds are not all the same and have different chemical compositions and properties.
If you have a specific question or topic you would like to discuss related to these compounds, feel free to ask!
It seems like there may have been a mistake or confusion in your statement.
Cu(NO3)2 is copper (II) nitrate, CuO is copper (II) oxide, Cu(OH)2 is copper (II) hydroxide, CuSO4 is copper (II) sulfate, and BaSO4 is barium sulfate.
These compounds are not all the same and have different chemical compositions and properties.
If you have a specific question or topic you would like to discuss related to these compounds, feel free to ask!