A reactor processes substance A into a product with a conversion of $90\%.$ The molar mass of substance A is $100$ g$/$mol$,$ and the heat of reaction is $-250$ kJ$/$mol$.$ The feed temperature is $30\backslash$deg C and the feed contains $50\%$ concentration of A$.$ The desired operating temperature of the reactor is $120\backslash$deg C$.$ Determine the amount of heating or cooling required and create a heat balance table for the reactor.