Determine whether the relation r on the set of all web pages is reflexive, symmetric, antisymmetric, and/or transitive, where (a, b) ∈ r if and only if a) everyone who has visitedweb page a has also visited web page b. b) there are no common links found on both web page a and web page b. c) there is at least one common link on web page a and web page b. d) there is a web page that includes links to both web page a and web page b.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.