which 1 of these two statements are true??

Question

1. the energy change of any system is equal to the energy gained by the system minus the world done by the system
2. enthalpy is a thermodynamic quantity, and the change in enthalpy equals the energy flow at constant volume

i had this on an exam today, i just dont understand the phrasing.

Answer 1

1 is true, assuming you meant work instead of world.

enthalpy is a thermo quantity, but it doesnt have much to do with energy flow at constant volume.