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Chemical Engineering
Chemical Engineering is the branch of engineering that deals with the technology of large-scale chemical production and the manufacture of products through chemical processes. Today, the field of chemical engineering is a diverse one, covering areas from biotechnology and nanotechnology to mineral processing.
1,464 Questions
What are CNG compressors and where do they use?
The term CNG stands for Compressed Natural Gas. This is compressed by special compressors for use in automobiles, household and other less-polluting substitute fuel applications in industry.
Can you silver plate right over bronze?
I would hire someone to do it. But you should be able to as long as you clean the bronze allowing the silver to coat the bronze.
Nitrile rubber 30 shore A printing compound formula?
A typical formula for a nitrile rubber 30 shore A printing compound may include ingredients such as nitrile rubber (35-55%), plasticizer (15-30%), filler (10-30%), vulcanizing agent, and other additives like antioxidants or accelerators. The specific composition will depend on the desired properties such as flexibility, hardness, and print quality. It is recommended to work with a materials expert to fine-tune the formulation for your specific printing requirements.
Is there a job in chemical engineering that does not involve calculations?
Yes - delivering the paperwork and collecting the coffee orders for the engineers. Seriously, it is a form of engineering and will require a huge amount of work including a lot of calulations.
What is T in the equation G equals H TS?
The temperature in kelvins at which the reaction is happening
No, Stevia is not bad for you. Actually referred to as "Stevia Rebaudiana Bertoni", it is a natural, perennial herb that has been used for centuries in Paraguay and Southern Brazil. Stevia provides a healthier way to sweeten drinks and food without: fat, sugar, artificial sweeteners or ingredients, gluten, or fructose. Diabetics can use Stevia and many people with allergies have found that Stevia is better in their diets as well.
What are those white stripes or smoke that you see during a nuclear explosion?
The columns of white smoke seen in films of nuclear tests are smoke trails left by small rockets. These devices were used to measure the size (that is the height and diameter) of the explosion. The smoke columns provided scale and then the size of the fireball could be calculated mathematically.
How much oil does it take to make a gallon of gasoline?
It takes about 2.14 gallons of crude oil to produce one gallon of gasoline.
Describe three ways heat can be transferred in a boiler?
what are the 3 ways to transferred heat into a boiler
How do you convert output voltage of thermocouple into temperature?
You need to know the temperature of the reference junction and the voltage difference between the reference and sensing junctions.
First, you convert the reference temperature to a voltage using the reverse equation or table for your thermocouple type. Then you sum that voltage with the measured voltage. Finally, you convert the summed voltage back to a temperature using the equation or table for the thermocouple type you are using. If the reference junction is at zero degrees C, you can skip the reference summing part. Before computer processing was easy and cheap, the reference junction was often kept in an ice water bath for that reason.
What will happen if suction temperature of centrifugal compressor increased?
There will be little change or effect if the suction temperature of centrifugal compression increases. This is because the gases included incur minimal changes. The required temperature for proper functionality is 43 degrees Celsius.
How do you convert Acid Ph to Percent?
You can convert pH to Percent dissociated easily using the Ka value. You can calculate the [H+] from the pH value, the [A-] from stoichiometry, and the [HA] from all of the above. It is easy to find the percent dissociation from here.
What valves preffered in the upstream and downstream of a control valve ball valve or globe valve?
That would depend on the application such as high steam pressure and if throttling is needed
What are the advantages and disadvantages of latex casting by using Plaster of Paris mould?
The following assumes we are discussing the Slush Casting Method. The primary advantage of using Plaster of Paris Moulds with casting latex is their porosity. The latex solids are drawn to the face of the tool quickly, as the water and ammonia soak into the plaster. It is essential to have a DRY plaster mould to do this with. Once allowed to deposit latex solids for some time, which varies from latex to latex based on their solids content, the remaining mix is poured out. Grades of latex go from Cheap Moulding Latex > Cream Latex (40-70% solids variation!) The next advantage of a PoP mould is the speed which latex dries within it. Being fully porous, this allows the latex to dry from "both sides". Also the fact that the water/liquids disperse within the plaster. The whole mould then becomes a drying surface. The main disadvantage of PoP moulds is mould longevity. Plaster of Paris is a Beta Plaster. This means the plaster is essentially weaker. Its second main disadvantage is fine details can be lost to the larger particle size and therefore definition. To combat this try to find a harder plaster, but the balance is fine. Too hard and the porosity drops. In the UK Herculite 2 is a good balance, but Plaster of Paris (Fine Casting Plaster by British Gypsum) is cheap and readily available -ebay or a web search for british gypsum fine casting or herculite 2 will see you right! SummaryAdvantages * Porosity * Value * availability Disadvantages * Shorter Mould Life * Potential Loss of Detail
Evaluate limit x tends to 0 sinx x?
The limit as x approaches zero of sin(x) over x can be determined using the squeeze theorem.
For 0 < x < pi/2, sin(x) < x < tan(x)
Divide by sin(x), and you get 1 < x/sin(x) < tan(x)/sin(x)
That is the same as 1 < x/sin(x) < 1/cos(x)
But the limit as x approaches zero of 1/cos(x) is 1,
so 1 < x/sin(x) < 1
which means that the limit as x approaches zero of x over sin(x) is 1, and that also means the inverse; the limit as x approaches zero of sin(x) over x is 1.
You can also solve this using deriviatives...
The deriviative d/dxx is 1, at all points. The deriviative d/dxsin(x) at x=0 is also 1.
This means you have the division of two functions, sin(x) and x, at a point where their slope is the same, so the limit reduces to 1 over 1, which is 1.
The "dust" from a volcano, more properly called ash, consists of tiny pieces of rock and glass blasted out when a volcano erupts explosively.
What are the applications of vector fields in chemical engineering?
The applications are in transport phenomena, in determining the direction of flow in momentum transport, heat transfer, and mass flux.
What is the symbol for frequency?
It is the Greek Letter "nu" which is "v". It looks like the English letter "v".
Defined as 'a relative measure for evaluating the resistance of iron ores to size degradation by impact and abrasion' (ISO 3271:1995), also known as abrasion index.
Index used in certificate of analysis of iron ore pellets.
What is a rectifying tray in a distillation column?
a section above the feed tray called rectifying section and a trays which are above the feed tray called rectifying trays.
The Feed conditons entering are at 25 deg c with 101.3 kpa
the reactor is a cstr operating at 65deg c
the product if ethylene glycol!!!!!!
