Ethylene (c2h4) gas enters an adiabatic combustion chamber at 25°c and 1 atm and is burned with 20 percent excess air that enters at 25°c and 1 atm. the combustion is complete, and the products leave the combustion chamber at 1 atm pressure. assuming t0 25°c, determine (a) the temperature of the products, (b) the entropy generation

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false