Noble gases state of matter at room temperature is what ?

If this equation was completed which statement would it best support

When the volume and number of particles of a gas are constant which of the following is also constant

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