Ajoule-thomson valve expands steam at a rate of 18 kg/s from 700 °c and 300 bar to 100 bar. deter- mine the outlet temperature of the steam assuming steam is: (a) a real fluid following the steam tables in appendix a. iii of text. (b) a real fluid following the generalized peng robinson equation of state with c* = 40 j/(mol. k). note: maple's fsolve is needed for this part of the question. show all working and mathematical derivations clearly either on paper or on the maple worksheet. write final answers on paper and submit maple worksheet on learn. 4. (a) show that the internal energy departure function of a van der waals fluid can be written as: (u – vic), y = ï (b) show that the entropy departure function of a van der waals fluid can be written as: (8 - 949)y = rinfo) (c) a piston-cylinder, initially containing 200 mol of helium at 300 k and 0.1 mº, is expanded to 5 times its original volume by applying 1.5 mj of heat from a hot reservoir at 400 k. assuming helium is a van der waals fluid and with c* = 29 j/(mol·k), determine the maximum work that can be produced from this process. what is the final temperature of the gas?

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Answer explain why it is not possible to deduce a complete order of reactivity.