APP Gas

See Milnes v. Huddersfield, 11 App. Gas. 511 (1886). The quotations here are from the comments by the Earl of Selborne and Lord Blackburn. 

Mittasch, recognizing the fact that decompn of NC in Hess app was abnormally high because the gases under press excercised an autocatalytic action, constructed an app in which NC, heated to 70° under atm press, was connected to a manometer. Thus, any vol changes because of gas formation were automatically registered. As Mittasch s.app was very complicated and costly, it did not find practical application except in Engl, where it was used in modified form for... 

It has been prepd by various procs using chlorinating agents, ie, Cl gas or hypochlorites in aq or anhyd ammonia. For example, the interaction of Cl ammonia N 1 2.04 12.73 at 300° in a flow reactor gives chloramine which is absorbed in a suitable solv at 75° (Ref 9). An app is described in Ref 10 for the improved prepn of chloramine using a Cl ammonia N ratio of 1 8.6 3.2, max yield 95%. It has also been prepd by the hydrolysis of N,N -dichloro-urca (Ref 1)... 

Impact sensy has been found for IPN by a modified Imp Chem Ind app (Ref 6) which consists of a sample cylinder Vi inch in diam and 1 inch long, fitted with a piston upon which a wt of 310g is dropped. Results were found for both air and nitrogen by varying the vol of the gas above the liq IPN. These data are tabulated below ... 

Theoretically, at a low Uappl the counteraction would be expected to result in full polarization of the electrodes, i.e., would become equal to Eappl, so no current will be passed however, the actual pc,2 at the electrode surface is continuously diminished by diffusion of the Cl2 gas into the solution and so there results a residual current, i = (2 appl - E fR. The amount of the latter increases more or less gradually with increasing Uappl, because the actual pC 2 increases until it finally becomes 1 atm, where Cl2 gas starts to escape from the solution. In the meantime, the anode has been completely covered with Zn metal, so that [Zn] has become unity. In fact, E has now attained a constant maximum value, the so-called decomposition potential, where electrolysis really breaks through. Any further increase in app) would, according to first expectations, cause a linear current increase, i = ( app, - Edecomp )IR. However, Fig. 3.2 shows that the experimental current curve deviates more and... 

Contreas, M. Egaas, B. Ramanathan, K. 1999. Progress toward 20% efficiency in Cu(In,Ga)Se2 polycrystalline thin-film solar cells. Prog. Photovolt. Res. App. 7 311-316. 

Lehlila, Antti Tuhkanen, Sami. Integrated cost-effectiveness analysis of greenhouse gas emission abatement The case of Finland. 1999.145 p. + app. 15 p. 

Apps PJ, Pretorius V, Lawson KH, et al. 1987. Trace analysis of complex organic mixtures using capillary gas -- liquid chromatography and the dynamic solvent effect. J High Resolut Chromatogr Chromatogr Commun 10(3)122-127. 

The air-steam mixture (approx 7 vols of air for 1 vol of steam) is forced into app by means of an injector. The amt of steam used for 1 Lb of coal gasified lies betw 0.3 and 0.5 lb. The vol of gas produced from bituminous coal is about 60 cu ft semibitumitiious yields 30 and lignite 28 cu ft... 

Impact Test with 2kg wt, PicArsn App 7 inches Rifle Bullet Impact Test in std cast iron bomb 100% explns Vacuum Stability at 100° 3.66cc of gas in 40 hrs... 

D) and measure the total vertical height of the column In (C). Measure and subtract the vertical height of the column of Hg In (D). Note the RT and atm press. Insert the tube(A) in a bath maintained at desired temp 10.5° and heat for 40 hrs unless an excessive amt of gas(ll+ml) will be evolved in less time. Remove the app, cool RT and observe the atm press. Measure the total vertical height of the column of Hg in the capillary(C) and subtract the vertical height of the column in the cup(D) Calculate the vol of liberated gas from the difference betw the initial and final lev els, as well as the vol of the capillary pet unit of length, the vol... 

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