Question

what is the delta H for A to B?​

Answer 1

Answer:

Zero Kilojoule is the answer

Answer 2

Answer:

deltaH for A to B will be the sum of Delta H for all the path

A to X =50 X to Y = -20(bcoz in the qstion it is given for Y to X = 20)

Y to B = -30

so 50+(-20)+(-30)=0