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Chemical-Engineering Questions
1- Determine the empirical formulas for compounds with the following percent compositions: (C=12,S=32, H=1,0=16 , N=14...
In the oxidation of Iron Sulfide (FeS2) where Ferric oxide (Fe2O3) and sulfur dioxide (SO2) are...
Methanol is synthesized according to the following reaction: CO + 2H2 CH3OH The standard heats of...
A coal has the following elemental analysis by weight: 78.4% carbon, 5.2% oxygen, 4.8% hydrogen, 1.4%...
An ice chest is constructed of Styrofoam (k =0.033 W/m・◦C) with inside dimensions of 27 cm...
1.The first thing needed was to add 3 drops of HCl to precipitate the ions out...
An investigation of grain growth in a-brass for various times and temperatures generated the following data:...
A gas contains 80.0 wt% propane, 15.0 wt% -butane, and the balance water. a. Write out...
for a heat exchanger, why does increasing the number of tube passes increase the Re #?...
The definition of SN1 and SN2 and please give a few examples, and the difference between...
The van der Waals limit
4. A una tobera adiabática entra refrigerante 134a, en régimen estacionario, 700 kPa y 120 °...
In a material balance equation what is the difference between generation and consumption from input and...
Ethanol, C2H5OH, (MW 46.06 g/mol) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol....
A dry food product has been exposed to a 30% relative-humidity environment at 15°C for 5...
Calculate the osmotic pressure of the following solutions at 25oC. i) Solution of 0.5mol NaCl/kg H2O...
a)How is it possible to determine if CaCO3 is Cl- free after synthesis? b)How can the...
A saturated solution of sodium chloride is prepared at 373 K is using 100 kg of...
What are the steps to calculating the energy balance around an absorber . What are the...
A system of water (1) and methane (2) exists as two phases at 298 K and...
Estimate the fugacity of cyclopentane at 110 C and 275 bar. At 110 C the vapor...
a perfectly insulated 50 kg salt bath (solid granulated; MW:58.44 g/mol, p=2.0 g/cm^3) is preheated to...
Why does the conductivity of a semiconductor increase with increased temperature, but a metal’s conductivity decreases?
2. Download a free heart-rate monitoring app onto your smartphone or tablet, such as Azumio’s Instant...
The room-temperature electrical resistivities of pure lead and pure tin are 2.06 x 10-7 and 1.11...
what are some systematic errors in an ideal gas constant experiment?
The following data show the rate constant of a reaction measured at several different temperatures. Temperature...
A single NMR scan of a dilute sample exhibits a signal-to-noise ratio (S/N) of 1.8. If...
why m-RNA is unstable
Describe the chernobyl nuclear reactor disaster? When did it happen? What caused it? Where is it...
Air at 100 kPa and 10°C enters a compressor and is brought to 1000 kPa and...
Find the volume forr a system of saturated liquid-vapor mixture of water at 200 °C that...
Can the D product of a formaldehyde plant distillation column contain 40% water of the total...
what is the current industrial process for butadiene production in Asia??
Three pounds of ethane (C2) and 2 Ib of n-Butane (n-C4) are mixed in a sealed...
Dynamics and process control question Design a controller for the loop-pro case study for the Cascaded...
Explain how the method of initial rates allows us to derive a rate law that satisfies...
There are a class of reactions known as runaway reactions—reactions whose rate continually increases that are...
How many moles of xylene would be contained in an empty warehouse (200' x 50' x...
We performed a bromination of trans-stilbene in lab (A green chemistry experiment). Suppose that you perform...
what was the purpose of washing the product in the hirsch funnel with methylene chloride? why...
Based on the thermodynamic properties provided for water, determine the energy change when the temperature of...
TRUE OR FALSE? Each state has the right to define and delegate authority and responsibility for...
why thermal conductivity decreases when the temperature difference increases
What is the standard heat of combustion of n-hexane gas at 25 degrees C if the...
Q. Determine the time required to obtain a Cu deposit of thickness 1 μm when electrodeposition...
A sample of 0.440 mol of Ar gas has a volume of 6.55L and a pressure...
What effect does ultrasound energy has on interfacial energy ?? Does the interfacial energy increase or...
You are culturing fibroblasts and observe that a spherical cell 1 μm in diameter divides into...
In process A: Pure methanol liquid enters a heat exchanger at 25C and exits at 100C...
Is a heat exchanger more efficient with dry air or humid air flowwing through it. Please...
How does annealing affect polymer crystallinity? Why does it have such an effect?
what factors cause a construction company to expend horizintally or vertically ?
Three kilograms (3.0 kg) of saturated steam at 162oC is held in a closed piston-cylinder apparatus...
A. The instruction booklet for your pressure cooker indicates that its highest setting is 12.7 psi...
In a series of experiments summarised in the table below, the initial concentrations of reactants A...
Ethene is burnt with 140% of excess air, what is the percentage of O2 in the...
8.9. Characteristics of an extraction system. For extracting acetic acid (A) from a dilute water solution...
In a container of negligible mass, add 0.140 kg of ice at -15.0 ° C to...
What happens when IR radiation interacts with molecules?
fill blanks: H) Because of acid rain the 1990 amendment to the Clean Air Act required...
What is the range of packed absorption column operating pressure? Please mention the reference
How to reset my view limit ?
How to decide gas absorption tower pressure? Mention reference please
Make a concise comparison of building materials in brick, light concrete and natural stone related to...
What would be an acceptable assumption of the over all heat transfer coefficient (U) for a...
What are the components of pressure drop under cyclone operation? [3 marks]
The Ksp for Ag2SO4 = 1.20 X 10-5. What is the molar solubility of Ag2SO4 in...
Where can the temperatures of specific reactions be found ?
What is the reason why in a cyclon smaller particles can be separated, compared to a...
Demonstrate that the power requirement for compressing a gas is smaller the more complex the gas....
Methane initially at 50 kPa, 40◦C, is held in an insulated tank having a volume of...
How to increase life-span of yeast after 36 hours and optimization for cell growth?
Explain the process of erucamide production
The following data are available for liquid ethanol at 20 C: M.W. = 46.07, Density =...
a. Discuss why car inside temperature is high when you park the car outside in a...
Calcium Chloride (CaCl2) is often used in place of NaCl for melting snow because it is...
Equilibrium between 2 phases means : A)Same pressure B) Same temp C) Same chemical potential D)Same...
For the isolation of lycopene from tomato paste, lycopene and carotene were separated by column chromatography...
Please answer the question with explanations of what is happening at each stage. Metallic tin is...
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