Hc sentence example

hc
  • Ag ?HC 'OH ?H CO 2 H-f-H 2 N OH, and also on the production from sodium nitromethane and mercuric chloride, thus CH 2: NO Ohg - > H 2 O -I-C: NOhg (hg = 2 Hg).
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  • Silberrad (Ber., to be a dihydro HC NH N --> 1V NH CH.
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  • If the carbon atoms are connected by two valencies, we obtain a compound H2C:CH2, ethylene; if by three valencies, HC: CH, acetylene.
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  • Thus ethane gives H3C CH2 CH3, propane; ethylene gives H 2 C:CH CH 3, propylene; and acetylene gives HC: C CH 3, allylene.
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  • In comparison with the isomeric propylene, CH 3 HC:CH 2, it is remarkably inert, being only very slowly attacked by bromine, which readily combines with propylene.
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  • The following diagrams illustrate these statements: - C ` H C OH HC /CH HC CH HC,/CH 'N/ HC CH CH CH From the benzene nucleus we can derive other aromatic nuclei, graphically represented by fusing two or more hexagons along common sides.
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  • Berthelot first accomplished the synthesis of benzene in 1870 by leading acetylene, HC: CH, through tubes heated to dull redness; at higher temperatures the action becomes reversible, the benzene yielding diphenyl, diphenylbenzene, and acetylene.
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  • Substituted acetylenes also exhibit this form of condensation; for instance, bromacetylene, BrC: CH, is readily converted into tribrombenzene, while propiolic acid, HC: C. COOH, under the influence of sunlight, gives benzene tricarboxylic acid.
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  • 'Cooh Ci, BrC CO CBr3+ H H2 HC ("CH, HC C /CH, H02C C02HCI CI (t) (2) C(3) (4) (5) The reduction of o-oxybenzoic acids by sodium in amyl alcohol solution has been studied by A.
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  • CH CH HC, N CH HC CH HC HC HC Hcch Hc Ch Ch Kekule t i Dewar Ladenburg One of the earliest and strongest objections urged against Kekule's formula was that it demanded two isomeric ortho-di-substitution derivatives; for if we number the carbon atoms in cyclical order from i to 6, then the derivatives 1.2 and 1.6 should be different.'
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  • From this he infers that cyanogen is C: N N :C and not N; C C; N, that hydrocyanic acid is HC N, and acetonitrile CH 3 C; N.
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  • Bladin HC -N (Ber., 1892, 25, p. 183) by the action of acetic)NH anhydride on dicyanophenylhydrazine (formed N: CH from cyanogen and phenylhydrazine), the resulting acetyl derivative losing water and yielding phenylmethylcyanotriazole, which, on hydrolysis, gives the free acid.
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  • Isomeric triazoles of the following constitutions are known:- HC :N N :CH N-N?
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  • HC:N ›NH N:CH ›NH HC:CH" Osotriazole (aa').
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  • CH E li CH 3 CO CO CH 3 HC CO.
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  • crotonic acid, isocrotonic acid and methacrylic acid; the constitutional formulae are HC CO 2 H HC C02H HC CH3 CH3 CH Crotonic Acid.
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  • Pararosaniline was reduced to the corresponding leuco compound (paraleucaniline), from which by diazotization and boiling with alcohol, the parent hydrocarbon was obtained (H 2 N C 5 H 4) 2 C:C 6 H 4 :NH 2 Cl - HC(C6H4NH2 HCl)3 - >HC(C6H4N2C13) Pararosaniline hydrochloride.
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  • -> HC(C6H5) 3.
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  • CH(CH 3) CO 2 HC 2 H 5 CO CH 2 CH3; and by the action of zinc alkyls on acid chlorides (M.
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  • with aldehydes and ketones it gives the fulvenes, substances characterized by their intense orange-red colour HC: CH (J.
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  • Phenylfulven, j " > C :CHPh, HC: CHI obtained from benzaldehyde and cyclo-pentadiene, forms dark red plates.
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  • - Two types of ketones are to be noted in this group, namely the a/3 and, fay ketones, depending upon the position of the double linkage in the molecule, thus: H2C / CH2: CH CO HC?
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  • >CH3�CHHC--CH, -HC - CH 3 >HC--CH3 OC 2 H 5 CH3 CH3 Formic ester.
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  • Poly HC Pontypridd Ladies We are a club looking to explore new avenues in Europe.
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  • Kinney HC, Brody BA, Kloman AS, Gilles FH: Sequence of central nervous system myelination in human infancy.
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  • The next day we left for HC (High Camp) in deteriorating weather.
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  • Nef based his formula, which involves bivalent carbon, on many reactions; in particular, that silver fulminate with hydrochloric acid gave salts of formylchloridoxime, which with water gave hydroxylamine and formic acid, thus - C: NO OAg -)HC?C?
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  • CO 2 H +C HC13 (7) HO 2 C CCI: CH CC12 CO CHC12 (4) CO 2 +[[Cihc: Ch Co Co]] CHCl2 (5) t 2 C O OH 0 Hooc C12c cl o HCl C Nc0 CH CH HC CH HC CH HCL -I) CH HC CH CH IttClaus Iv connected by single bonds to (say) four other atoms, then in a certain unit of time it will collide with each of these atoms in turn.
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  • and III., pyrazine being I.: HC N CH HC NH CH HC N CH2 H2C NH CH2 HC N CH2 H2C NH H2 I (Pyrazine) II (1.4 dihydro) III (2.3 dihydro) IV (Piperazine).
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  • Formamidine, HC: (NH)NH 2, is only known in the form of its salts, the hydrochloride being obtained by the action of ammonia on the hydrochloride of formimido-ethyl ether (A.
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  • >CH3�CHHC--CH, -HC - CH 3 >HC--CH3 OC 2 H 5 CH3 CH3 Formic ester.
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  • Ultrasound is used to evaluate the growth of the baby and the ratio of the head circumference (HC) to the abdominal circumference (AC) is a good predictor of asymmetric IUGR.
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