Apuddle of water on the porch disappears after a few days. which statement justifies this phenomenon?

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change