Calculate z and v for nitrogen trifluoride at 300 k and 95 bar by the following equations (a) the truncated virial equation [eq. (3.38)] with the following values of virial coefficients b--83.5 cm3.mol-1 c-5592 cm6.mol-2 (b) the truncated virial equation [eq. (3.36)], with a value of b from the generalized pitzer correlation [eqs. (3.58 (3.62)] (c) the redlich/kwong equation (d) the soave/redlich/kwong equation (e) the peng/robinson equation for nf3. tc-234 k, pc-44.6 bar, and ? 0.126 equation (3.38) pv rt equation (3.36) bc pv rt bp rt equation (3.58) abp rtc equation (3.62) b0.139- 0.172 t4.2

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.