Chemical Engineering

25 000 rands

Normally you can just refer to the polymers just as proteins, but if you want to be specific, you can say polypeptide, thereby excluding amino acids, dipeptides, and oligopeptides. The monomers of proteins are amino acids.

1.5

(Sack of Barite = 100 pounds)

(Cubic foot of Barite = 150 pounds)

(Density of Barite - 2.087)

*Sucrose (fructose, glucose) *Maltose (glucose, glucose) *Lactose (galactose, glucose)

* = disaccharides

()= monosaccharides

All are sugars which equal carbohydrates

other examples are corn syrup, sorbitol, glycerol, dextrin, starch...

You can make your own battery, or you can use a generator of some sort.

To make a battery, you need an electrolyte of some sort and electrodes from opposite ends of the period table. You would likely use zinc for one of the electrodes and copper or carbon for the other. You could use citrus fruit or potatoes for the electrolyte medium, and place the electrodes into them.

For a generator, you would need to create moving magnetic fields inside of coils of wire. You would have to create the movement at a steady rate, and use circuits to regulate the voltage and current produced.

Silver is used as a low resistance conductive material. Contactors and relays contact points are made of copper and are silver plated to obtain the lowest resistance between the moving contact faces.

Assuming you have binary components the McCabe Thiele Method should be used. Otherwise a process simulator such as Aspen, Pro/II, and/or KGTower should be used.

Well.. Its a small n initeresting question but the answer is too lengthy for this.. I will try briefing on it. Crude oil procured contains many impurities like salts, metals which need to be taken off. Its been taken to desalters and then to the main crude column. In fractionator, the components get separated depending on their boiling points. The bottmom of the fractionator is taken to vaccum column. The vacuum maintained will be approx 15- 20 mmHg at the bottom of the column. Lighters generated in main column are aondensed and used as naptha. The different cuts like kerosene and diesel are routed to respective hydro treaters. The heavier portion (higher C-H) are considered for either hydro cracking or hydro treater. In hydrotreater the main reactant is Hydrogen which is used at very high pressure and temperature which helps in denitrification and desulfurisation respectively.

No, brass is a metal that will stay for thousands of years in landfills and rubbish dumps without breaking down.

Process engineering helps obtain the specifics of a certain industrial process. In the biotech industry, the quality of the final product has a huge bearing on the right physical and chemical conditions being maintained.

Therefore, the industrial process has to be engineered in order to obtain product starting from raw material.

thermosetting plastic becomes hard when heated and deteriorates by excessive cross linking and thermoplastic becomes soft and can be moulded into any shape.

I know it is an additive used in gasoline and some other petroleum products. Do a google search on it. The above answer is incorrect. It was a refrigerant and aerosol spray propellant until its manufacture was discontinued in 1995. It was usually sold under the brand name Freon-12.

Yes, in olden times, when cars used lead net in the smoke valve of the cars, at that time, it released a lot of smoke into the air. If one wanted to dispose it, he needed a lot of effort to do so. So, lead vapour is a non- biodegradable pollutant. Now a days too burning lead is poisonous thing and is a hateful thing to do to the workers. It releases CO2 in the air also.

By evaporating the water out, which precipitates the sugar back into its crystalline form.

1. The orifice plate can easily be changed to accomodate widely different flow rates, whereas the throat diameter of a venturi is fixed, so that its range of flow rates is circumscribed by the practical limits of Dp.
2. The orifice meter has a large permanent loss of pressure because of the presence of eddies on the downstream side of the orifice-plate; the shape of the venturi meter prevents the formation OS these eddies and greatly reduces the permanent loss.
3. The orifice is cheap and easy to install. The venturi meter is expensive, as it must be carefully proportioned and fabricated. A home made orifice is often entirely satisfactory, whereas a venturi meter is practically always purchased from an instrument dealer.
4. On the other hand, the head lost in the orifice for the same conditions as in the venturi is many times greater. The power lost is proportionally greater, and, when an orifice is inserted in a line carrying fluid continuously over long periods of time, the cost of the power may be out of all proportion to the saving in first cost. Orifices are therefore best used for testing purposes or other cases where the power lost is not a factor, as in steam lines.
5. However, in spite of considerations of power loss, orifices are widely used, partly because of their greater flexibility, because installing a new orifice plate with a different opening is a simpler matter. The venturi meter can not be so altered. Venturi meters are used only for permanent installations.
6. It should be noted that for a given pipe diameter and a given diameter of orifice opening or venturi throat, the reading of the venturi meter for a given velocity is to the reading of the orifice as (0.61/0.98)2, or 1:2.58.(i.e. orifice meter will show higher manometer reading for a given velocity than venturi meter).

By proper composition of metal & by slow cooling & by uniform distribution of metal

GAS ABSORPTION: The process of wholly taking in one substance into other through the pores or interstices is called gas absorption. EXAMPLE:When hydrogen chloride gas is passed through water it gets absorped to form hydrochloric acid ans by m.fahim

A common electrolyte bath will normally contain either a potassium-cyanide solution or a cyanide-free solution based on sulfites or chlorides.

These data depends strongly on the chemical composition.

For gasoline: the freezing point is from -40 0C to -60 0C

For Diesel fuel: the freezing point is from -6 0C to -20 0C

Higher the glass transition temperature of the polystyrene can be attributed to the fact that sterically rigid bulky aromatic moieties like benzene in the styrene compared to that of aliphatic polypropylene

Yes, especially Hoover's less expensive models.