Atannery with a waste water flow of 0.011 m³/s and a bod5 of 590 mg/l discharges into goose creek. the creek has a 10-year 7-day low flow of 1.7 m³/s. upstream of the tannery, the bod5 of the creek is 0.6 mg/l. the bod rate constant k are 0.115 day-1 for the tannery and 3.7 day-1 for the creek. the temperature of both the creek and the canon tannery wastewater is 20°c. calculate the initial ultimate bod after mixing.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

In general, how do thermosetting plastics compare to thermoplastics in mechanical and physical properties?

Agas is compressed from vi 0.3 m, p 1 bar to of v2 0.1 m3, p2--3 bar. pressure and volume are related linearly during the process. for the gas, find the work, in kj.