Answer:
at constant pressure the enthalpy change of a process equal the amount of heat transferred into or out of the system
Step-by-step explanation:
∆H=∆(E+PV)
=∆E+P∆V
∆E=qp+w
w=P∆V
∆H=∆E+P
∆V=(qp+w)-w=qp
when qp= heat at constant pressure
good luck