rapid mixing basin is to be designed for a 4.0 million gallon per day (MGD) conventional water treatment plant. The following criteria are provided to the designer for their design:oThe basin is to be square with a depth equal to 1.25 times the width;oThe basin should allow for a velocity gradient of 900 sec-1(at 50oF);oThe basin should have adetention time of 30 seconds. Determine:

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.