What is the molecular mass of a gas if C, =1915 J/kgK. Cr = 1.50 KJ/kgK and universal gas constant 8.314 KJ/kmolK? Select one: O a. 30 O b. 15 O .20 O d. 25

2.0 lb of water inside a piston-cy inder assembly undergoes the following two processes in series Process 1-2: Contant pressure cooling from a saturated vapor at p1 = 170 psi until x2 = 80%. Process 2-3: Constant volume heating to a saturated vapor. There are no changes in kinetic or potential energy. a) [2 pts] Find the specific volume for state 1 in ft3/lb. b) [2] Find the specific volume at state 2 in At3/b