This process is calculated within enthalpy calculations as U + pV, to label the amount of energy or work required to " set aside space for " and " create " the system ; describing the work done by both the reaction or formation of systems, and the surroundings.

# Reverse the reduction reaction with the smallest potential ( to create an oxidation reaction / overall positive cell potential )

Iron oxide mixed with aluminium powder can be ignited to create a thermite reaction, used in welding and purifying ores.

Secondary dolomitization of limestone is common, where calcite or aragonite are converted to dolomite ; this reaction increases pore space ( the unit cell volume of dolomite is 88 % that of calcite ), which can create a reservoir for oil and gas.

Once there, a series of chemical reactions ( the Sabatier reaction coupled with electrolysis ) would be used to combine a small amount of hydrogen ( 8 tons ) carried by the Earth Return Vehicle with the carbon dioxide of the Martian atmosphere to create up to 112 tonnes of methane and oxygen.

In 1936, Szilárd attempted to create a chain reaction using beryllium and indium, but was unsuccessful.

A postmodernism of ' reaction ' rejects Modernism and seeks to return to the lost traditions and history in order to create a new cultural synthesis, while Postmodernity of ' resistance ' seeks to deconstruct Modernism and is a critique of the origins without necessarily returning to them ( Irving 1993, 60 ).

Since chemical reactions can neither create nor destroy matter, nor transmute one element into another, the amount of each element must be the same throughout the overall reaction.

At this time, research on the use of a fission weapon to create a fusion reaction had been ongoing since 1942, but the design was still essentially the one originally proposed by Teller.

The Wedding-Guest's reaction turns from bemusement to impatience and fear to fascination as the Mariner's story progresses, as can be seen in the language style: for example, Coleridge uses narrative techniques such as personification and repetition to create either a sense of danger, of the supernatural or of serenity, depending on the mood of each of the different parts of the poem.

There was no kind of success that did not create its own reaction.

The hypochlorite radical then reacts with an atomic oxygen creating another oxygen molecule and another chlorine radical, thereby preventing the reaction of a monoatomic oxygen with O < sub > 2 </ sub > to create natural ozone.

The later prequel series Star Trek: Enterprise describes the warp engine technology as a ' Gravimetric Field Displacement Manifold ' ( Commander Tucker's tour, " Cold Front "), and describes the device as being powered by an anti-matter / matter reaction which powers the two separate nacelles ( one on each side of the ship ) to create a displacement field ( the aforementioned " bubble ") The episode also firmly establishes that many other civilizations had warp drive before humans ; First Contact co-writer Ronald D. Moore suggested that Cochrane's drive was in some way superior to forms that existed beforehand, and was gradually adopted by the galaxy at large.

The Act also authorized the President to intervene in strikes or potential strikes that create a national emergency, a reaction to the national coal miners ' strikes called by the United Mine Workers of America in the 1940s.

Traditionally made hard cheese, such as Emmental, and soft ripened cheeses may create less reaction than the equivalent amount of milk because of the processes involved.

There they could perform different functions: some blocked the cavity through which the nuclear materials were shot to create a reaction ; other locks blocked circuits ; and some simply prevented access to the control panel.

Plans were announced later that year to renovate and expand the monastery in order to create housing units and underground parking, but negative public reaction squelched those plans.

Fetish fashions are sometimes confused with costuming, because both are usually understood to be clothing that is not worn as the usual wardrobe of people, and is instead worn to create a particular reaction.

McMillan understood the underlying principle of the reaction and started to bombard the uranium-239 with deuterium to create the element 94.

Argonne traces its birth from Enrico Fermi's secret charge — the Manhattan Project — to create the world's first self-sustaining nuclear reaction.

Another reaction that occurs is that the lines create after-images of certain colors due to how the retina receives and processes light.

The trio decided to create their own series in reaction to a proclamation by the children's cable network Nickelodeon that they were to launch their own line of animated shows, which would be later called Nicktoons.

Water produced along with the acetal product is used up in hydrolysing the orthoester and producing more alcohol to be used in the reaction.

In 1991, a more efficient synthesis was described that involves the condensation of 2-acetylpyridine and enaminone, which is prepared by the reaction of 2-acetylpyridine with N, N-dimethylformamide dimethyl acetal.

This reaction uses a benzaldehyde and aminoacetoaldehyde diethyl acetal, which in an acid medium react to form isoquinoline.

Acetalisation is an organic reaction that involves the formation of an acetal or ketal.

The reaction can be driven to the acetal when water is removed from the reaction system either by azeotropic distillation or trapping water with molecular sieves or aluminium oxide.

The latter reagent in itself is an acetal and therefore the reaction is actually a cross-acetalisation.

The original Pictet – Spengler reaction was the reaction of β-phenethylamine with the dimethyl acetal of formaldehyde and hydrochloric acid forming a tetrahydroisoquinoline.

Usually, this state results when the forward reaction proceeds at the same rate as the reverse reaction.

If a catalyst does change the equilibrium, then it must be consumed as the reaction proceeds, and thus it is also a reactant.

The tip of the arrow points in the direction in which the reaction proceeds.

The S < sub > N </ sub > 1 reaction proceeds in two steps.

Then the reaction proceeds as an avalanche until two radicals meet and recombine.

As with the free-radical substitution, the radical addition proceeds as a chain reaction, and such reactions are the basis of the free-radical polymerization.

ATP is required for the ligase reaction, which proceeds in three steps:

Both electrodes undergo the same chemistry ( although the reaction proceeds in reverse at the cathode )

Synthesis proceeds as a multi-step biochemical reaction.

The value of k determines how a nuclear chain reaction proceeds:

A stoichiometric amount or stoichiometric ratio of a reagent is the optimum amount or ratio where, assuming that the reaction proceeds to completion:

The Arrhenius equation gives the quantitative basis of the relationship between the activation energy and the rate at which a reaction proceeds.

* Its relatively low melting point () means that it is easy to melt the metal, so that the reaction can occur mainly in the liquid phase and thus proceeds fairly quickly.

It dissolves in boiling alkalis, with the formation of the tellurite and telluride: 3Te + 6KOH = K < sub > 2 </ sub > TeO < sub > 3 </ sub > + 2K < sub > 2 </ sub > Te + 3H < sub > 2 </ sub > O, a reaction which proceeds or is reversible with increasing or decreasing temperature.

Henry, rattled by her reaction, declares her ugly and attempts to nullify the marriage contract, but the marriage proceeds with two unwilling participants.

The reaction is exothermic and proceeds as follows:

In heterolactic fermentation, the reaction proceeds as follows, with one molecule of glucose converted to one molecule of lactic acid, one molecule of ethanol, and one molecule of carbon dioxide:

To activate the reaction, a small amount of water is added, and the boiling point of water is quickly reached as the reaction proceeds.

This reaction is analogous to iron being rusted by oxygen, and proceeds at about the same slow rate.

The graph for these equations is a sigmoid curve, which is typical for autocatalytic reactions: these chemical reactions proceed slowly at the start because there is little catalyst present, the rate of reaction increases progressively as the reaction proceeds as the amount of catalyst increases and then it again slows down as the reactant concentration decreases.