Sodium hydroxide is added to a cylinder of aluminum nitrate, precipitating out aluminum hydroxide. When additional base is added ... reappear and then redissolve. Turn on stir plate and add NaOH ...

1632 GMT – Base metal prices are mixed, with LME three-month copper down 0.7% at $9,538.50 a metric ton and LME three-month aluminum up 0.15% at $2,693 a ton. President Trump’s universal 25% ...