What are the assumptions needed to derive the general Plug Flow Reactor mole balance? Check all that apply. steady-state plug flow total moles don't change Isothermal perfect mixing constant density Orjis not a function of T pressure driven flow Which of the following are terms in the conceptual energy balance? Check all that apply. energy crossing system boundaries due to heat exchange with the surroundings change in potential energy energy crossing system boundaries due to mass exchange with the surroundings change in energy of the system over time change in energy due to chemical reaction change in energy capacity due to change in composiiton change in kinetic energy All other things equal, including the Ergun equation for modeling PBR pressure drop due to pressure-driven flow generally results in a lower predicted reactor conversion. True O False