< td >< center > Gas </ center ></ td >

< td >< center > Liquid </ center ></ td >

< td >< center > Solid </ center ></ td >

< td > Gas </ td >

< td >< center > NONE ( All gases are mutually miscible )</ center ></ td >

< td >< center > Liquid aerosolExamples: fog, mist, hair sprays </ td >

< td >< center > Solid aerosolExamples: smoke, cloud, air particulates

< td > Liquid </ td >

< td >< center > FoamExample: whipped cream, Shaving cream </ td >

< td >< center > EmulsionExamples: milk, mayonnaise, hand cream </ td >

< td >< center > SolExamples: pigmented ink, blood </ td >

< td > Solid </ td >

< td >< center > Solid foamExamples: aerogel, styrofoam, pumice </ td >

The International Time Bureau ( BIH ) began a time scale, T < sub > m </ sub > or AM, in July 1955, using both local caesium clocks and comparisons to distant clocks using the phase of VLF radio signals.

Algeria has always been a source of inspiration for different painters who tried to immortalize the prodigious diversity of the sites it offers and the profusion of the facets that passes its population, which offers for Orientalists between the 19 < sup > th </ sup > century and the 20 < sup > th </ sup > century, a striking inspiration for a very rich artistic creation like Eugène Delacroix with his famous painting women of Algiers in their apartment or Etienne Dinet or other painters of world fame like Pablo Picasso with his painting women of Algiers, or painters issued from the Algiers school.

< center ></ center >

< center >

All 128 ASCII characters, including non-printable characters ( represented by their abbreviations ). The 95 ASCII graphic characters are numbered from 20 < sub > hexadecimal | hex </ sub > to 7E < sub > hexadecimal | hex </ sub > ( decimal 32 to 126 ).

The " space " character had to come before graphics to make sorting easier, so it became position 20 < sub > hex </ sub >; for the same reason, many special signs commonly used as separators were placed before digits.

To keep options available for lower case letters and other graphics, the special and numeric codes were arranged before the letters, and the letter " A " was placed in position 41 < sub > hex </ sub > to match the draft of the corresponding British standard.

The @ symbol was not used in continental Europe and the committee expected it would be replaced by an accented À in the French variation, so the @ was placed in position 40 < sub > hex </ sub > next to the letter A.

Carboxylic acid groups (− CO < sub > 2 </ sub > H ) can be deprotonated to become negative carboxylates (− CO < sub > 2 </ sub >< sup >−</ sup > ), and α-amino groups ( NH < sub > 2 </ sub >−) can be protonated to become positive α-ammonium groups (< sup >+</ sup > NH < sub > 3 </ sub >−).

Carboxylic acids are Brønsted-Lowry acids because they are proton ( H < sup >+</ sup >) donors.

Carboxylic acids are typically weak acids, meaning that they only partially dissociate into H < sup >+</ sup > cations and RCOO < sup >–</ sup > anions in neutral aqueous solution.

The Arrhenius definition states that acids are substances which increase the concentration of hydronium ions ( H < sub > 3 </ sub > O < sup >+</ sup >) in solution.

The reason why pHs of acids are less than 7 is that the concentration of hydronium ions is greater than 10 < sup >− 7 </ sup > moles per liter.

Reactions of acids are often generalized in the form HA H < sup >+</ sup > + A < sup >−</ sup >, where HA represents the acid and A < sup >−</ sup > is the conjugate base.

The stronger of two acids will have a higher K < sub > a </ sub > than the weaker acid ; the ratio of hydrogen ions to acid will be higher for the stronger acid as the stronger acid has a greater tendency to lose its proton.

The 21 amino acids found in eukaryotes, grouped according to their side-chains ' pKa | pK < sub > a </ sub > values and charges carried at pH # Living systems | physiological pH 7. 4

Amino acids (,, or ) are biologically important molecules made from amine (- NH < sub > 2 </ sub >) and carboxylic acid (- COOH ) functional groups, along with a side-chain specific to each amino acid.

They are known as 2 -, alpha -, or α-amino acids ( generic formula H < sub > 2 </ sub > NCHRCOOH in most cases < ref > Proline is an exception to this general formula.

It lacks the NH < sub > 2 </ sub > group because of the cyclization of the side-chain and is known as an imino acid ; it falls under the category of special structured amino acids .</ ref > where R is an organic substituent known as a " side-chain "); often the term " amino acid " is used to refer specifically to these.

A rare exception to the dominance of α-amino acids in biology is the β-amino acid beta alanine ( 3-aminopropanoic acid ), which is used in plants and microorganisms in the synthesis of pantothenic acid ( vitamin B < sub > 5 </ sub >), a component of coenzyme A.

The method initiates by converting mercury into Hg < sup > 2 +</ sup > by oxidation from nitric and sulfuric acids, followed by a reduction of Hg < sup > 2 +</ sup > with tin ( II ) chloride.

Reaction with concentrated, hot KMnO < sub > 4 </ sub > ( or other oxidizing salts ) in an acidic solution will yield ketones or carboxylic acids.

In addition to undergoing the reactions characteristic of internal alkynes, terminal alkynes are reactive as weak acids, with pK < sub > a </ sub > values ( 25 ) between that of ammonia ( 35 ) and ethanol ( 16 ).

The Lavoisier definition was held as absolute truth for over 30 years, until the 1810 article and subsequent lectures by Sir Humphry Davy in which he proved the lack of oxygen in H < sub > 2 </ sub > S, H < sub > 2 </ sub > Te, and the hydrohalic acids.

Aqueous solutions of Bk < sup > 3 +</ sup > ions are green in most acids.

Limestone dissolves under the action of rainwater and groundwater charged with H < sub > 2 </ sub > CO < sub > 3 </ sub > ( carbonic acid ) and naturally occurring organic acids.

However, some biological substances commonly called " monosaccharides " do not conform to this formula ( e. g., uronic acids and deoxy-sugars such as fucose ), and there are many chemicals that do conform to this formula but are not considered to be monosaccharides ( e. g., formaldehyde CH < sub > 2 </ sub > O and inositol ( CH < sub > 2 </ sub > O )< sub > 6 </ sub >).

Because the clocks had been on average well above sea level, this meant that TAI slowed down, by about 10 < sup >− 12 </ sup >.

* If it is required to use a single number X as an estimate for the value of numbers, then the arithmetic mean does this best, in the sense of minimizing the sum of squares ( x < sub > i </ sub > − X )< sup > 2 </ sup > of the residuals.

If F ≥ F < sub > Critical </ sub > ( Numerator DF, Denominator DF, α )

η < sup > 2 </ sup > ( eta-squared ):

He also offers a conversion table ( see Cohen, 1988, p. 283 ) for eta squared ( η < sup > 2 </ sup >) where 0. 0099 constitutes a small effect, 0. 0588 a medium effect and 0. 1379 a large effect.

When there are only two means to compare, the t-test and the ANOVA F-test are equivalent ; the relation between ANOVA and t is given by F = t < sup > 2 </ sup >.

With the formula C < sub > n </ sub > H < sub > 2n + 2 </ sub >, Alkanes belong to a homologous series of organic compounds in which the members differ by a constant relative molecular mass of 14.

The number of carbon atoms is used to define the size of the alkane ( e. g., C < sub > 2 </ sub >- alkane ).

The simplest possible alkane ( the parent molecule ) is methane, CH < sub > 4 </ sub >.