By slow-cooling the austenite to room temperature, steel can increase strength.

(a) How is it possible?

(b) Explain the possible mechanisms of strengthening

Each student needs to submit a pdf file in ONLY ONE of the following topics:

1. Modern mixing devices in the preparation of semisolids.

2. Segregation in solid dosage form manufacture.

3. Different models of rotor stator turbines.

4. Agitation patterns in solid feeders.

Explain the Synthesis of Iron Nanoparticles with its mechanism and the steps of nucleation involved in it?

. Air in a 0.3 m3 cylinder is initially at a pressure of 10 bar and a temperature of 330 K. The cylinder is to be emptied by opening a valve and letting the pressure drop to that of the atmosphere. What will be the final temperature and mass of gas in the cylinder if this is accomplished:

a) In a manner that maintains the temperature of the gas at 330 K?

b) In a well-insulated cylinder (Answer: Tfinal = 171 K).

List the basic principles of the distillation tower at least 4 principles
and why there are several design techniques?
I need the answer in obvious and clear script not by handwriting please.

Consider the electrochemical reactions shown below. Mercury(I) chloride, also known as calomel, is a solid used in reference electrodes. The two reactions are

Zn = Zn²⁺ + 2e^-

Hg₂Cl₂ + 2e^- = 2Cl^- + 2Hg

1. What is the overall chemical reaction?
2. Develop an expression for U, the equilibrium potential of the cell.
3. Write down an expression for the standard potential of the cell in terms of the standard Gibbs energies of formation.
4. Use standard half-cell potentials from the table to determine the standard Gibbs energy of formation for aqueous ZnCl₂. Why is this value different than the value for solid ZnCl₂?
5. What is the standard Gibbs energy of formation for Hg₂Cl₂?

Write down top 5 vulnerabilities for a vulnerability scanner and explain in your own words, why this vulnerability is an issue.

Two flash resistance drums operated at 101.3 kPa are connected continuously.
You want to separate the hexaneooctane mixture. (Make the effective number two digits.

(a) fed feed with a zhexane of 0.3, 900 lbmol/hr, making V/F one-third flash at this time
How much is the liquid and vapor composition (yhexane,1, xhexane,1) of the hexane leaving the drum?
(b) (a) where the vapor disillate obtained through the problem is to be re-separated using the flash resistance drum;
All. The hexane composition (yhexane,2) of the projector stream leaving the second flash drum is to be 0.6
Calculate V2, L2, xhexane,2.

1. What problem is always of concern for the analyst when fluorescence detection is being used for a specific analyte?

2. Calibration curves for fluorescence and UV/Visible absorbance will ultimately curve at high concentrations. For each of these techniques, explain why there is curvature.

[1]- An alloy of silicon and iron (Si-Fe) has 0.25 wt% of Si. If the density and atomic weight are 2.33 ? ??3 and 28 ? ??? for silicon and 7.87 ? ??3 and 55.85 ? ??? for iron, calculate:

a) Atomic percentage of silicon and iron.

b) Density of iron in the alloy ( ?? /?3 )

. c) Average atomic weight of the alloy ( ?/ ??? )

. d) Number of moles of silicon and iron.

Two liquid streams are flowing at constant rates into a blender. One is benzene, which flows at a measured rate of 20.0L/min, and the other is toluene. The blended mixture enters a storage tank (inner diameter = 5.5m) equipped with a sight gauge. During an interval in which no liquid leaves the storage tank, the liquid level in the tank is observed to increase by 0.15 meters over a one-hour period. Calculate the flow rate of toluene into the blender (L/min) and the composition of the tank contents (wt% benzene).

1. Your company wants to buy a compressor that will operate adiabatically to compress 2 kg/s of saturated R-134a vapor at -15°C to a pressure of 1000 kPa. What is the minimum work (in kW) required? Use the right sign convention for work. Hint: The minimum work is that of the reversible process. Start by simplifying the entropy balance!

Answer: -75.92KW

2. Consider the same situation as problem 1. Your company wants to buy a compressor that will operate adiabatically to compress 2 kg/s of saturated R-134a vapor at -15°C to a pressure of 1000 kPa. What is the minimum outlet temperature (in°C) required? Hint: just like before, the minimum outlet temperature occurs when the process is reversible.

answer: 47 C

3. Consider the compressor from problems 1 and 2. You would like the effluent of the compressor to be saturated vapor at 1000 kPa. Calculate what would be the rate of entropy generation (in kW/K) if the compressor is adiabatic.

Only need the answer to this question, thanks

4. A steam turbine has an inlet flow of 3 kg/s at 3.5 MPa and 450 C with a velocity of 140 m/s. the exit of the turbine is 800 kPa and 300 C at a very low velocity. Calculate a.) the work produced in (MW) by the turbine, and b.) The entropy generated in (kW/k)

Why did the environmental engineers cycle between oxic and anoxic growth for this reactor?