Engineering Answers

In steady state ideal PFR, the concentration of reactant_____decreases/increases/stays constant) from entrance to exit of the reacto reactor?

5)In steady state ideal CSTR, the exit concentratar of reactant( is equal to,is less than,is grater than) the concentration of the reactant inside the reactor?

4)During the progress of the reaction in the batch reactor, the concentration of reactant(decreases,increases)with increasing time?

3)Write the expression for rate of reaction of reactant A if it decomposes according to elementary reaction, 2A->P+R

2)Is the rate constant depends on the concentration of reactant?(yes/no)

1) Is the experimentally determined rate equition depends on the type of reactor used for experiments? (Yes / No)

A battery having a voltage source of cos t is connected to a series circuit on which the

inductance is 0.75 henry and the resistance is 15 ohms. Determine the current i at any time t if the

initial current is zero.

A large tank initially contains 220 gal of brine where there is dissolved 35lb of salt. Starting

at time t = 0, a brine containing 3lb of dissolved salt per gallon flows into the tank at the rate of

6gal/min is kept uniform by stirring and the well-stirred mixture simultaneously flows out of the

tank at a slower rate of 3gal/min. How much salt is in the tank at the end of 20 min?

reverse bending stress of 300 N/mm2 is acting on 55 mm diameter steel. the ultimate strenth of steel is 590 N/mm2. Consider the factors ka= 0.45,Kb=0.85,Kc=0.89 and remaining factor are 1. Calculate the life of the bar for the reliability of 90%.

According to the data listed at the Philippine Statistics Authority, the Philippine total

population reached 4 billion persons in year 2020 and was then increasing at the rate of 250

thousand persons each day. Assuming that natural population growth at this rate continues, what

will be the population at year 2060?