Silicon Tetramethyl, Si(CH3)4 (tetramethyl silicane), and silicon tetraethyl, Si(C2H5)4, are both liquids.
The latter reacts with chlorine to give silicon nonyl-chloride Si(C2H5)3 C2H4C1, which condenses with potassium acetate to give the acetic ester of silicon nonyl alcohol from which the alcohol (a camphor-smelling liquid) may be obtained by hydrolysis.
Triethyl silicol, (C2H5),Si OH, is a true alcohol, obtained by condensing zinc ethyl with silicic ester, the resulting substance of composition, (C2H5)3 SiOC2H51 with acetyl chloride yielding a chloro-compound (C2H5)3SiC1, which with aqueous ammonia yields the alcohol.
And without noticing that he was singing, to strengthen the si he sung a second, a third below the high note.
"Si vous envisagez la question sous ce point de vue," * he began, pronouncing French with evident difficulty, and speaking even slower than in Russian but quite calmly.
Lowe was delighted with this, and promptly translated it into Latin, as follows: "Centinentur hac in fossa Humilis Roberti ossa; Si ad coelum evolabit, Pax in coelo non restabit; Sin in inferis jacebit, Diabolum ejus poenitebit."
Group IV.: C, Si, Ge, Zr, Th, tetravalent; Ti, tetravalent and hexavalent; Sn, Pb, divalent and tetravalent; Ce, trivalent and tetravalent.
Si-ngan-fu), the capital of China, was equal to 225 °, which Ptolemy reduced to 177°, but which in reality only amount to 126°.
The first class contains such revenues as the emlak verghi-si (duty on realty), `ashar (tithes), temettu (professional tax), &c. In all such cases the taxable values are fixed by a commission of experts, sometimes chosen by the tax-payers themselves, sometimes by the official authorities; in all cases both tax-payers and authorities are represented on the commissions, whose decisions may be appealed against, in last resort, to the council of state at Constantinople, whose decision is final.
The use of the subjunctive, without any conjunction, to express purpose, a clause prescribing a sacrifice to Ceres being followed immediately by pacr si ut propitia sit).
Bouche-Leclercq's Manse; des aratiq ites romaines, quoted in Daremberg and Saglio; and on the equites si aptlares, T.
Thence the boundary describes a sinuous line, following the Great Wall, and thus includes the Ordos (Ho-tau) and Alashan (Si-tao), and reaches its most southern point in 36° 40' N., 104° 20' E.
We have a sequence So, Si, S2, ...
10) ready to acknowledge its utility in counteracting unpleasant smells ("si me odor alicujus loci offenderit, Arabiae aliquid incendo"), is careful to say that he scorns to offer it as an accompaniment to his heartfelt prayers (Apol.
SILICON [[[symbol]] Si, atomic weight 28.3 (0=16)], a nonmetallic chemical element.
When heated with sodium and potassium, apparently no action takes place, but if heated with lithium it forms a lithium silicide, Li 6 Si 2 (H.
It is only soluble in a mixture of hydrofluoric and nitric acid, or in solutions of the caustic alkalis, in the latter case yielding hydrogen and a silicate: Si-}-2KHO+H 2 O = K 2 SiO 3 +2H 2.
A second hydride of silicon, of composition Si 2 H 6, was prepared by H.
The hexachloride, Si 2 C1 61 is formed when silicon chloride vapour is passed over strongly heated silicon; by the action of chlorine on the corresponding iodocompound, or by heating the iodo-compound with mercuric chloride (C. Friedel, Comptes rendus, 18 7 1, 73, P. 497).
The octochloride, Si 3 C1 8r is formed to the extent of about 2 to 1% in the action of chlorine on silicon (L.
It is a colourless liquid which boils at 210° C. Water decomposes it with the formation of silico-mesoxalic acid, HOOSi Si(OH) 2 SiOOH.
It is soluble in carbon bisulphide, and is decomposed by water and also by heat, in the latter case yielding the tetraiodide and the di-iodide, Si 2 I 4, an orange-coloured solid which is not soluble in carbon bisulphide.
It crystallizes in needles which decompose at "4° C. Silicon amide, Si(NH 2) 4, is obtained as a white amorphous unstable solid by the action of dry ammonia on silicon chloride at -50° C. (E.
It is readily decomposed by water: Si(NH 2) 4 +2H 2 O=4NH 3 +S10 2 Above o° C. it decomposes thus: Si(NH 2) 4 =2HN3-}-Si(NH)2.
Numerous methods have been given for the preparation of magnesium silicide, Mg 2 Si, in a more or less pure state, but the pure substance appears to have been obtained by P. Lebeau (Cornptes rendus, 1908, 146, p. 282) in the following manner.
Moratin's crowning triumph in original comedy was El Si las Ninas (1806), which was performed night after night to crowded.
He merely corrects slackness or lack of doing justice (Si archiepiscopus defecerit in justitia exhibenda) and by his writ (precepto) directs the controversy to be determined in the metropolitan's court.
Hich float on or are suspended in water, and of the benthos, or si 2.
By Kiang-si, S.
- Fe, 97.3; C, 0.2; Si, 2.5.
Function of separations of (li'12 2 13 3 ...) of specification (si 1 s 22 s 33) Suppose the separations of (11 1 13 2 1 3 3 ...) to involve k different specifications and form the k identities ï¿½1s ï¿½ s Al A 2 A3 ..
Tschermak, in 1878, regarded them as isomorphous mixtures of the following fundamental molecules: H 2 KA1 3 (SiO 4) 3, corresponding with muscovite; Mg 6 Si 3 0 12, a hypothetical polymer of olivine; and H4S15012, a hypothetical silicic acid.
Z = k.si Mec ste Tha PER Deli,?
C, Si, Ti, Zr, Th, Sn; Fe, Ti.
As has been said, however, the contention of the common law judges prevailed, and the Admiralty Court (except for a temporary revival under Cromwell) sank into comparative Modern in si insignificance during the r th century.
1 1854 Elizabeth, daughter of Maximilian Joseph, duke of o avaria, who belonged to the younger and non-royal branch si f the house of Wittelsbach.
KIANG-SI, an eastern province of China, bounded N.
On the west of Prospect Hill is the Si yuan, or "Western Park," which forms part of the palace grounds.
By Kwang-si and Kwang-tung, and W.
Almost all the traffic is conveyed through Hu-nan by water-ways, which lead northward to Han-kow on the Yangtsze Kiang, and Fan-cheng on the Han River, eastward to Fu-kien, southward to Kwang-tung and Kwang-si and westward to Sze-ch'uen.