Where is Earth's heat energy most concentrated?

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

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

What is the mass of 0.46 mil of mgcl2