In an process, the system releases heat that is absorbed by the ; in an endothermic process, the absorbs heat from the

               In an Exothermic process, the system releases heat that is absorbed by the Surrounding; in an endothermic process, the System absorbs heat from the Surrounding.

Explanation:
                   From thermodynamics point of view, a subject under observation is known as System, while everything except the system is known as Surrounding. The system is separated from surrounding by a Boundary. 
                   As we know the heat moves from higher temperature to lower temperatures. So, the process in which the heat moves from system to surrounding as the system has higher temperature than surrounding is called as Exothermic Process. While, Endothermic Process is the reverse of Exothermic Process in which heat moves from surrounding to the system as surrounding has greater temperature than the system.

That is a lot of moles that you have