邊幾個tube 沒有rusting出現?
tube1:iron nail suspending in sodium chloride solution..
tube2:iron nail suspending above the solid calcium carbonate..
tube3:iron nail suspending in boiled distilled water and have oil layer on the water..
tube4:iron nail suspending above anhydrous calcium chloride..
tube5:iron nail suspending in the tap water..
tube6:iron nail suspending in air..
邊幾個tube 沒有rusting出現?請用eng 解釋!