Chemical Engineering

A coarse-grained texture typically represents a single long period of cooling and crystallization. This texture forms when the magma has had enough time to cool slowly and crystals have had time to grow to a visible size.

Water

Intercontinental Ballistic Missiles (ICBMs) can travel distances of up to 10,000 kilometers or more depending on the specific missile design. These missiles are capable of reaching targets on the other side of the world, making them a key component of long-range strategic weapons systems.

Oxidation. The metal is ionized by the loss of an electron.

Think how high all the detritus would be if something did not decompose it, especially all that cellulose plant make and die with. We are talking trillions of tons of indigestible fiber made per year. Some bacteria can digest this fiber; fortunately.

Yes, It is. The name "potassium" comes from the word "potash", as potassium was first isolated from potash. Potassium is a soft silvery-white metallic alkali metal that occurs naturally bound to other elements in seawater and many minerals.

its pretty much over once a car gets to that stage, even if you give it a 3000 dollar body job , the rust will return. Best advice is buy a newer car and underspray it every summer. Corrosion is like cancer - you need to remove it and protect non-damaged areas against it with undercoatings. Corrosion in a battery compartment can be dramatically reduced by saturating the area with baking soda dissolved in warm water.

The true mill-head grade of an ore-stream in percent, ounces, or parts per million of a metal or mineral, less extractive metallurgical losses; the proportion of an ore material actually recovered.

Diesel fuel can start to gel and potentially clog fuel filters and lines at temperatures below approximately 32°F (0°C). A specific temperature at which diesel fuel will gel can vary depending on the type and blend of diesel fuel. To prevent gelling, additives can be used to lower the gel point of diesel fuel.

PLGA when unmodified does tend to be hydrophobic. However it can be modified to ensure that it is hydrophilic. The best approach to this would probably be to do a literature search which would be able to give you a more exhaustive answer in respect to * the form in which your PLGA is (i.e as prepared or prepared through solvent phase separation/super critical processing) * the thickness of the material (is it 1nm or 1m?)

The element that fits this criteria is francium (Fr). All isotopes of francium are radioactive, with the most stable isotope having a half-life of only 22 minutes. Francium is a highly unstable element and is very rare in nature.

Neon is a noble gas and is a poor conductor of electricity. It is an insulator at normal conditions because it lacks free electrons to carry an electric current.

Catalyst reformers come in three flavours: non-regenerative, semi-regenerative (SRR) and continuous catalyst regeneration (CCR). The earliest were non-regenerative, most of these are no longer in service. Today most catalytic reformers are SSR and the latset technology (around since 1971 UOP) are CRR.

Catalytic reformers use a solid catalyst (usually chlorinated Pt/alumina or Pt-Re/alumina) under high partial pressures of hydrogen at around 500degC to convert low octane straight run naphtha (usually heavy naphtha: C6-C11, b.p. 140-200degC) into high octane "reformate".

However, the catalyst deactivates over time due to coke build-up and loss of chlorine. A regeneration is required to restore catalyst activity and metals dispersion.

In the semi-regenerative (SRR) version, the reactors have to be taken off-line for regeneration every 6-24 months depending on rate of loss of activity.

In continuous catalyst regeneration (CRR) version a portion of the catalyst is contiuously transferred from the reactor system to a regenerator where it undergoes controlled coke combustion and oxychlorination to restore activity and metals dispersion - without the need to take the unit off-line.

CRR process units can be licenced from UOP or Axens.

Paul Diddams, Intercat

Urine has no chemical formula because it is a "combination" of things. It contains water, which you know is H2O, urea, which is (NH2)2CO, sodium chloride, which is NaCl, and a number of other dissolved salts and organic compounds. Use the link below to learn more.

Resonance effect: It is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by one single Lewis formula.A molecule or ion with such delocalized electrons is represented by several contributing structures called as resonance structures or canonical forms.

Inductive Effect: It is a permanent effect. When group attached to carbon atom attract electrons from them or push the electrons toward it is called as Inductive effect.

it is a gas, used to help vegetables as tomato to ripen after picking theme out of trees as informed.

diamonds are made of carbon atoms. enough said.

The relative rate constant is a ratio of the rate constants of two reactions in a chemical reaction mechanism. It is used to determine the rate of reaction between different reactants in relation to each other.

An example of distillation is the process of separating alcohol from water to produce spirits like vodka or whiskey. This is done by heating the mixture to create vapor, which is then cooled and condensed back into a liquid form.

The conversion factor to convert inches to "Nominal Bore" (NB) is 25.4 mm per inch. NB sizes are based on the internal diameter of a pipe, and they do not directly correlate to inches.

ELECTROFILIC REAGENTS:It is the combination of two words(electro means electron and phile means loving).Therefore those reagents that contain positive charge on it are called eletrophilic reagents. These reagents have the property of attacking on the negative part of the other substance.Some of the reagents are(NO2+ ,SO3+) NUCLEOPHILIC REAGENTS:Combination(nucleo means nucleus and phuile means loving)

Because alloys often have better properties than their parent metals. Stronger, rust resistant etc