. What are your thoughts on whether a facility should only worry about complying with the OSHA regulations or go beyond compliance and use the stricter requirements of either OSHA regulations or other guidelines? Please include any personal experiences you might have.
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Give your own examples of Heating Curve for water. Below I have kay questions.
1. Understand the different segments in the heating curve for H2O that ranges from below the melting point to above the boiling point.
2. Calculate the energy changes associated with heating a substance (like H2O) through a series of temperature changes and phase changes. Please give your own examples of Phase Diagrams. Below I have key questions
3. Know that a phase diagram relates the states of matter for a substance to temperature and pressure.
4. Identify the main regions and significant points in a phase diagram. 5. Understand the effect of changes in temperature and changes in pressure on the phase of a substance as shown by its phase diagram.
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Tray dryers operate by passing hot air over the surface of a wet solid that is spread over trays arranged in racks. They are most widely used in the food and pharmaceutical industries. Its main advantage being its simple operation. However, it has the disadvantage of long drying times. From the concepts of drying that you have learned, what will you suggest to lessen drying time for tray dryers?
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Coconut oil is to be produced from dry copra in two stages. First, through expellers to squeeze out part of the coconut oil and then through a counter current multi- stage solvent extraction process. After expelling, the dry copra cake contains 25% residual oil. In the solvent extraction operation, 95% of the residual oil in the expeller cake is extracted as a solution containing 50% by weight oil. After the extraction process, the wt of insoluble cake was found to be 50kg. If solvent containing 1% oil is used and one kg of solution with every 2 kg of insoluble cake is removed with underflow. How many stages are required? If 1kg of solvent with every 2 kg of insoluble cake is removed with the underflow, how many stages are required?
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An equimolar liquid mixture of Benzene (B) and Toluene (T) at 20oC is fed continuously to a flash drum in which is heated to 60 oC. The liquid product is 40 mole % B and the vapour product is 60 mole % B. How much heat must be transferred to the mixture 100 mol of feed.
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A milk sample deteriorates following the first order reaction
kinetics.
a) It deteriorates 40 times faster at 250C than when it is stored
at 40C. Calculate the activation energy in kJ for the milk
breakdown reaction.
a) Find the rate constant if 80% of the milk deteriorates after 12
hours at 250C.
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How to determine coefficients for equilibrium constants?
The equilibrium constant built in aspen has the following equation:
ln (Keq) = A + B / T
How to determine these coefficients: A, B
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Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. CH4 + Cl2 → CH3Cl + HCl Once formed, methyl chloride can be chlorinated in subsequent reactions to form methylene chloride (CH2Cl2), chloroform (CHCl3) and carbon tetrachloride (CCl4). In a methyl chloride production process a reactor is fed with methane and chlorine in a molar ratio of 5: 1 (methane: chlorine). In the process the chlorine is consumed in its entirety. The selectivity observed in the process is 4 mol of CH3Cl / mol of CH2Cl2 and negligible amounts of chloroform and carbon tetrachloride. The product stream of reactor passes to a condenser where CH3Cl and CH2Cl2 are separated in liquid form, and CH4 it is separated from the HCl to be recirculated to the process (only CH4 is recirculated). The production of CH3Cl is 500 kmol / h. Calculate the flow and molar composition of the fresh feed, the HCl flow that occurs and the flow of methane recirculation.
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A liquid stream ,F, containing A and B is fed to a distillation column.
1) What is q? (Correct answer is 0.69543)
If the feed line equation is of the form y = mx + b (in terms of
the more volatile component):
2) What is m? (Correct answer is -2.28332)
3) What is b? (Correct answer is 2.13417)
*The correct answers are there please show the work on how to get the answer given*
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1. Three tanks are interconnected non-interactively. The fluid enters the first tank at the flow rate q and the third leaves the tank at flow rate q3. The speed of the fluid coming out of the third tank is fixed by means of a pump. It is maintained. According to this, a) Mathematically the effect of the change in the velocity of the fluid entering the first tank on the liquid height in the third tank Please express. (The areas of the tanks are equal to each other.) b) If the velocity of the fluid entering the first tank is suddenly increased by 10 units, the height of the liquid in the third tank over time express the change mathematically. (The time constant of the first and second tanks are 2 minutes and 3 minutes respectively, area of tanks 1 m2 'D.) * Show the system schematically
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A packed bed reactor is also known as a fluidized bed
reactor?
Only when using an alias
Depends on the catalyst used
True
Always false
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Mixing of citric acid takes place in a 12-liter capacity tank. The tank has
initially (t = 0), 4 Liters of fresh water (no citric acid). Citric acid solution stream at 0.1 kg/L concentration enters the tank at a rate = 0.1 L/min. The citric acid solution leaves out from a
nozzle in the tank at a rate = (t+1) L/min. Assume the tank is well-mixed and no reaction takes place.
1. Sketch and label the tank and show if the system is steady state or not, why?
2. Derive the ODE that show the relationship between citric acid concentration and
time?
3. Solve the ODE to get a relationship between Citric acid concentration and time?
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Explain the production of methanol by one-step,
two-step and auto thermal reforming process in detail?
b) What are the types of reactors employed in the synthesis of
methanol?
1000 words each
thanks
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Q. 1. Explain the role of Oman government in reducing
the carbon foot print of the nation.
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Hydrogen is produced by the reaction: ?? (?) + ?2? (?) → ??2 (?) + ?2 (?) The feed stream to the reactor is an equimolar mixture of carbon monoxide and steam, and it enters the reactor at 425 K and atmospheric pressure. If 70 % of steam is converted to hydrogen and if the product steam leaves the reactor at 750 K, how much heat must be transferred from the reactor?
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