xmutesoulx
Mar 5, 2009, 03:05 PM
I am learning about enthalpy in chem and have no fricking clue how to fill in these questions... please help me!!
"When a pure substance is heated or cooled, but does not change state, the energy as heat is the __________________ as the enthalpy change. Therefore the molar enthalpy change is equal to the __________________________________ multiplied by the __________________________, or [delta]H=_______________."
"A ______________________ enthalpy change means that the change requires energy and that the process is __________________________. A _________________ enthalpy change means that the change releases energy or is a ________________________ process."
"The science that examines the energy changes that accompany chemical and physical processes is called ____________________________."
"When a pure substance is heated or cooled, but does not change state, the energy as heat is the __________________ as the enthalpy change. Therefore the molar enthalpy change is equal to the __________________________________ multiplied by the __________________________, or [delta]H=_______________."
"A ______________________ enthalpy change means that the change requires energy and that the process is __________________________. A _________________ enthalpy change means that the change releases energy or is a ________________________ process."
"The science that examines the energy changes that accompany chemical and physical processes is called ____________________________."