Calculate the value of h2-h1 for superheated steam between the two states p2=100 bar, t2=320 ºc and p1=100 bar and t1= 650 ºc.

a) compare your answer with the value from the steam tables, which is -961.2 j/g.
b) calculate the value of gr for one mole of water at 100 bar at both 320 ºc and 650 ºc.
c) compare your answer to the value of g obtained from the steam tables.
d) calculate the fugacity of the water vapor in the two states.

c. magnitude and direction

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force