251 Answered Questions for the topic chemical engineering

Chemical Engineering Math Chemistry Physics

04/01/23

How can I increase the packing factor and at the same time create more void space in a crystalline structure of a refractory material?
How can I optimize the packing factor and at the same time create more void space in a crystalline structure of a refractory material?
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Chemical Engineering Math Physics Physical Science

03/26/23

Help-Calculate the conductivity of insulating material.
Example 3.38. An electric cable of 12 mm diameter is insulated to increase the current capacity. Due to insulation the current carrying capacity is increased by 15% without increasing cable surface... more
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Chemical Engineering Science Chemistry Act Science

03/16/23

Chemical reaction balancing problem
4.800 g of H2 was mixed and ignited with 36.40 g of O2. How much and which substances will be present in the reaction flask when the reaction is complete? Prove that the total mass of all the... more
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Chemical Engineering Chemistry Physics Biochemistry

03/15/23

Identify the affect the equilibrium of the system on the following given situation.
Consider the reaction that has reached a state of equilibrium at 200oC:CO(g) + 3H2(g) ⇌ CH4(g) + H2O(g)   exothermic Determine whether each of the following will increase the equilibrium... more
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Chemical Engineering

03/05/23

What kind of chemical processes are used to create aspirin

What kind of chemical processes are used to create aspirin
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02/24/23

Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M.
The decomposition of H2O, to water and oxygen follows first-order kinetics with a rate constant of 0.0400 min-1.2H2O2(I) -> 2H2O(I)+ 02(g)Calculate the [H2O2] after 10 minutes if [H2O2]0 is 0.200M. more
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02/22/23

What is the reaction of Fe metal with ferric chloride?
What is the reaction of Fe metal with ferric chloride?
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Chemical Engineering Math Biology Chemistry

02/14/23

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.

A rate law is 1/2 order with respect to a reactant. Describe (quantitatively) what happens to the rate of reaction when the concentration of this reactant is doubled.
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Chemical Engineering Math Biology Chemistry

02/14/23

Consider the possible reaction mechanism below.
A + B ➞ C + D D + B ➞ C a. Show that mechanism is consistent with balanced equation. b. Show which is the rate-determining step (RDS). Explain your choice.
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Chemical Engineering Math Science Biology

02/14/23

The experiment is repeated at 500˚C. How would the following change (qualitatively) at the new temperature (explain your answer)?

This reaction was originally done at a temperature of 250K, but now it is being done at 500K.4PH3 (g) ➞ P4 (g) + 6H2 (g)a. The half-life of phosphine. b. The rate law for phosphine decomposition.... more
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Chemical Engineering Math Science Biology

02/14/23

Assume the rate of disappearance of PH3 is 2.5 x 10^-3 M/s at 20 seconds.

4PH3 (g) ➞ P4 (g) + 6H2 (g)a. What is the rate of appearance of P4 at 20 seconds?b. How will the rate of P4 appearance change (qualitatively) as the reactionprogresses?Justify each answer!
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Chemical Engineering Math Science Chemistry

01/21/23

Im not sure how to answer any of these questions, can someone explain each stage?
Acetic acid and acetone are used for the purification of PLA production. A liquid mixture of acetic acid and acetone is in vapour liquid equilibria (VLE) at 100 °C. The mole fraction of acetic... more
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Chemical Engineering

12/23/22

thermodynamics mcq

A gas undergoes an isobaric expansion, meaning that the pressure remains constant during the process. The initial volume of the gas is 10 L, the final volume is 20 L, and the work done by the gas... more
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Chemical Engineering

12/23/22

thermodynamics mcq

What is the first law of thermodynamics? a) Energy cannot be created or destroyed b) The entropy of a closed system always increases c) Heat cannot be converted into work without some other change... more
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12/20/22

The following reaction occurs at 298 K: Zn(s) + 2Ag+(aq)  Zn2+(aq) + 2Ag(s)
Topic: REDOX AND ELECTROCHEMISTRYQuestion:Sketch a diagram that shows how this cell could be set up. A voltmeter and two beakers, with some labels, are provided to give you a start. Add and label... more
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12/20/22

Identify the oxidation numbers on all atoms in this reaction. Balance the reaction in acidic solution and basic solution.
SO42−(aq) + Al(s) ® SO32− (g) + Al3+(aq)
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Chemical Engineering

11/07/22

Protein estimation

I want to measure the protein content of an unknown sample concentration. I’m wondering do I need to produce my own BSA curve? Or can I just use an online BSA curve and plug the absorbance value of... more
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10/31/22

Hello, please help me with this problem
.model small .data msg1 db 10,13,"Enter first no.$" msg2 db 10,13,"Enter second no.$" msg3 db 10,13,"Result is:$" .code start: mov ax,@data mov ds,ax lea dx,msg1 mov ah,09H int... more
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Chemical Engineering Mechanical Engineering

10/23/22

How to calculate Steam Generator Pressure in this cycle if you only have one turbine inlet condition?
A simple, superheated Rankine cycle has turbine inlet temperature of 900 K and condenser pressure of 20 kPa. The turbine has efficiency of 92% and the pump has efficiency of 85%. If the overall... more
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Chemical Engineering Science Chemistry

10/01/22

What is the balanced equation of the chemical reactions involved in making toothpaste?
Like for example the balanced chemical equation for the synthesis of Urea is: 2NH3 (aq) + CO2 (aq) à CH4N2O (aq) + H2O (l)
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Chemical Engineering Chemistry Organic Chemistry

09/29/22

I need help solving it by the rule of three #Chemistry
Rust contains an iron-oxygen compound in which there are three oxygen atoms for each two iron atoms. In this compound, the iron to oxygen mass ratio is 2.325:1. Another compound of iron and oxygen... more
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09/18/22

chemistry question, HELP

The substance Fe2 O3 contains 2.325g of iron for every 1000g of oxygen. How much iron and oxygen compound contains these elements in the ratio 2.616g of Fe to 1000g of oxygen.What is the formula of... more
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Chemical Engineering Chemistry

09/13/22

Mass Balance Diagram
I have a mass balance diagram where you're mixing sulfuric acid(40% concentrate) with sulfuric acid(90% concentrate) and it needs to be 250 lbm sulfuric acid with 98% concentrate. How do I do the... more
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Chemical Engineering Math Science Biology

09/12/22

Senior High school Project ideas - Scientific

Hi! I’m doing a big project in Senior high school right now that plays a huge part in my graduation and would appreciate some help!I have to come up with an idea/subject that includes a good... more
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Chemical Engineering Science Chemistry

08/29/22

if a sample containing...
If a sample containing 13.7 g of H2 is reacted with 31.9 g of O2, determine the theoretical yield of H2O.
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