Word Finder - dilution

definition

The process of making something dilute.

definition

A solution that has had additional solvent, such as water, added to it into order to make it less concentrated.

definition

The process of bringing in unskilled workers to replace skilled ones, for example during wartime.

definition

Short for share dilution.

It occasionally happens that a change in dilution affects the chemical action that occurs.

On solution in sulphuric acid, followed by dilution with water, it yields acetophenone.

A volume of the diluted yeast was introduced into flasks containing sterilized wort, the degree of dilution being such that only a small proportion of the flasks became infected.

It is remarkable that even a small addition of zinc-white (oxide of zinc) to the reddish varieties especially causes a considerable diminution in the intensity of the colour, while dilution with artificial precipitated sulphate of lime ("annalin") or sulphate of baryta ("blanc fix") acts pretty much as one would expect.

The equation then becomes a 2 /V = k, or a = A / Vk, so that the molecular conductivity is proportional to the square root of the dilution.

From these numbers we can, by help of the equation, calculate the conductivity of the acids for any dilution.

Strong sulphuric acid dissolves it, forming an acid salt, Pb(HS04)2, which is hydrolysed by adding water, the normal sulphate being precipitated; hence the milkiness exhibited by samples of oil of vitriol on dilution.

On this principle Hahnemann ordered his original tinctures to be reduced in strength to onefiftieth; these first dilutions again to one-fiftieth; and so on, even till the thirtieth dilution, which he himself used by preference, and to which he ascribed the highest "potentiality."

The solution may be directly precipitated with copper, the copper passing into solution as copper sulphate, and the silver separating as a mud, termed " cement silvers" Or the silver sulphate may be separated from the solution by cooling and dilution, and then mixed with iron clippings, the interaction being accompanied with a considerable evolution of heat.

Where the evaporation is at a minimum, the inflow of rivers from a large continental area and the precipitation from the atmosphere at a maximum, there is necessarily the greatest dilution of the sea-water, the Baltic and the Arctic Sea being conspicuous examples.

Wood has studied the iridescent colours seen when a precipitate of potassium silicofluoride is produced by adding silicofluoric acid to a solution of potassium chloride, and found that they are due to the same cause, the refractive index of the minute crystals precipitated being about the same as that of the solution, which latter can be varied by dilution.

The fact that benzene and its derivatives are remarkable for their powerful absorption of the most refrangible rays, and for some characteristic absorption bands appearing on dilution, led Hartley to a more extended examination of some of the more complicated organic substances.

If, on the other hand, the salt of the cryohydrate fails before the ice the water given by the continued fusion dilutes the solution, and we pass along the curve OB which shows the freezing points of a series of solutions of constantly increasing dilution.

Now measurements of osmotic properties of these solutions show that their osmotic pressures are abnormally great and that, at extreme dilution, the ratio of their osmotic pressures to that of equivalent solutions of non-electrolytes is equal to the number of ions indicated by the electrolytic properties.

At the limit of dilution, when the concentration of a solution approaches zero, we have seen that thermodynamical theory, verified by experiment, shows that the osmotic pressure has the same value as the gas pressure of the same number of molecules in the same space.

If l is the heat of dilution per unit change of volume in a calorimeter where all the energy goes to heat, the change in internal energy U is measured by ldv.

In the limit of dilution when n is very small compared with N this gives Raoult's experimental law that the relative lowering is n/N, which we deduced from the osmotic law, and conversely from which the osmotic law follows, while for more concentrated solutions agreement is obtained by assigning arbitrary values to a, which, as we have seen, is 5 in the case of cane-sugar.

This may consist of a steam injector by means of which air is made to bubble through the liquid, which produces both the required agitation and the heating, and at the same time oxidizes at least part of the sulphides; but this method of agitation causes a great waste of steam and at the same time a further dilution of the liquor.

The boric acid being scarcely ionized gives only a very small quantity of hydrogen ions, whilst the base (sodium hydroxide) produced by the hydrolysis occasioned by the dilution of the solution, being a "strong base," is highly ionized and gives a comparatively large amount of hydroxyl ions.

When fixed amounts of this dilution series are mixed with an appropriate agar and incubated, then different numbers of colonies will be obtained.

Our benzoin is a dilution of 60% benzoin resin in coconut oil.

The flask used for the dilution will also need to be accurately calibrated.

Using the PDWork template to calculate dilution factors Getting the right dilution of samples for analysis can be a great help for laboratory technicians.

This would avoid dilution of effort in both groups.

The approved dilution is published on a list of disinfectants under The Animal Health Act 1981.

Each fund can also invest in a company at subsequent rounds to prevent dilution.

For wet analysis samples require dilution to be measured.

An alternative method is the application of the frontal method at infinite dilution.

Some paste packets will recommend the correct dilution for ' size ' .

Target values were determined by isotope dilution GCMS at Professor Thienpont's laboratory in Gent.

Studies that wish to estimate associations between disease risk and usual exposure levels need to take regression dilution effects into account.

The United States House of Representatives has just approved a bill that will make the law on trademark dilution much stricter.

But in the field, nothing much happened beyond wishful thinking, contaminant dilution and perhaps inadvertent nutrient addition.

Use the same dilution in a bowl of steaming hot water for a steam inhalation.

Previously we contributed to the development of a novel compact dilution refrigerator.

The dilution caused by the addition of the cell suspension should not be considered in determining the potency titre.

The greater the protein breakdown, the more urea is created and therefore more water is required for dilution.

He found that dilution with water does not effect proportionate alteration in the transpiration velocities of different liquids, and a certain determinable degree of dilution retards the transpiration velocity.

Analyzes involved proportional hazards modeling and adjustment for confounding by known cardiovascular risk factors and for regression dilution bias.

This paper describes the determination of the solubility parameter of starch measured by water at infinite dilution.

While some have been able to get away with it, others have been caught by savvy lab technicians who tested for the presence of detox products and dilution attempts.

You may weaken the vinegar through dilution with water and there are a variety of different formulas or recipes available, a few of which are outlined below.

White wine dilution - Pour white wine on a red wine stain to dilute it.

A titer is the serial dilution of antibodies (protein molecules or immunoglobulins produced by the immune system in response to specific disease agents) found in blood serum that determines their level of concentration.

Titer-The highest dilution of a material (e.g., serum or other body fluid) that produces a reaction in an immunologic test system.

It's important to keep the dance your own, however - while collaborative dance creation can work, it can also lead to intense frustration, wasted time, and the dilution of a certain person's vision of a dance through compromise.

If either ion carried with it some of the unaltered salt or some of the solvent, concentration or dilution of the liquid would be produced where the ion was liberated.

Many solutions in which the transport numbers vary at high concentration often become simple at greater dilution.

In the case of substances like ammonia and acetic acid, where the dissociation is very small, I - a is nearly equal to unity, and only varies slowly with dilution.

The value of k, however, does not keep constant so satisfactorily in the case of highly dissociated substances, and empirical formulae have been constructed to represent the effect of dilution on them.