In the first test tube, place 1 – 2 g of CuSO4  5 H2O. 2. Gently heat the bottom of the test tube. Observe the changes that occur. Why does the color change? Why is condensation occurring at the top of the tube? What is the chemical reaction that describes the color change, and accounts for the condensation? Is this an exothermic or endothermic reaction? Why?

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the answer would be b i believe

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.