100 cubic meters of carbon dioxide initially at 150 C and 50bar is to be isothermally compressed in a frictionless piston and cylinder device to a final pressure of 300 bar. Calculate:

i. The volume of the compressed gas
ii. The work done to compress the gas
iii. The heat flow on compression assuming carbon dioxide:

a/ Is an ideal gas
b/ Obeys the principle of corresponding states
c/ Obeys the Peng-RObinson equation of state

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.

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false

A)-explain briefly the importance of standards in engineering design. b)- what is patent? c)-explain the relationship between these standards: b. s. and b. s.en d)- in engineering design concepts, types of loads and how they act are important factors. explain.