Based on your ideas about energy, where do you see examples of energy in the system you built? don't delete my question there is no science to put my question down

Lewis structure and molecular geometry for nh2cl

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

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?