Write a hypothesis for part ii of the lab, which is about the type of material an object is made of, and its ability to absorb or release thermal energy. use the format of "if . . then . . because . .” and be sure to answer this part of the lesson question: "how does the type of material affect thermal energy transfer? ”

Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.