Hoff Sentence Examples
This subject has occupied a dominant position in physico-chemical research since the investigations of van't Hoff and Arrhenius.
Van Hoff pointed out that measurements of osmotic pressure confirmed this value in the case of dilute solutions of cane sugar.
Van 't Hoff's formula is equivalent to taking the frequency of dissociation as proportional to the square of the concentration of the molecules, and the frequency of recombination as proportional to the cube of the concentration of the ions.
This influence extended from Germany to Denmark, where it was embraced by Hoff ding, and to England, where it was accepted by Romanes, and in a more qualified manner as " a working hypothesis " by Stout.
The conception of a semi-permeable membrane, permeable to the solvent only, was used by van't Hoff as a means of applying the principles of thermodynamics to the theory of solution.Advertisement
The physical investigation of osmotic pressure, and its correlation by Van't Hoff with the pressure of a gas, brought forward a new aspect of the phenomena, and suggested an identity of physical modus operandi as well as of numerical value.
Van't Hoff showed that the osmotic pressure P due to a number of dissolved molecules n in a volume V was the same as would be exerted by the same number of gas-molecules at the same temperature in the same volume, or that PV = ROn.
The highest pressures recorded for cane-sugar are nearly three times as great as those given by van't Hoff's formula for the gas-pressure, but agree very well with the vapour-pressure theory, as modified by Callendar, provided that we substitute for V in Arrhenius's formula the actual specific volume of the solvent in the solution, and if we also assume that each molecule of sugar in solution combines with 5 molecules of water, as required by the observations on the depression of the freezing-point and the rise of the boiling-point.
A formula of this type has been widely employed by van't Hoff and others to calculate heats of reaction and solution from observations of solubility and vice versa.
An account of Raoult's life and work was given by Professor van't Hoff in a memorial lecture delivered before the London Chemical Society on the 26th of March 1902.Advertisement
David Hasselhoff 24 Mb When The Hoff was in London last year, his hotel chambermaid switched him on to the joys of Magic.
In London to film an ad campaign, The Hoff severed a tendon on shards from a bathroom shelf he accidentally smashed.
Wislicenus, van't Hoff and others showed that substances having the same graphic formulae vary in properties and reactions, and consequently the formulae need modification in order to exhibit these differences.
Wislicenus, Le Bel and van 't Hoff has resulted in the introduction of another condition which formulae for the benzene complex must satisfy, viz.
The evidence which led Arrhenius to this conclusion was based on van 't Hoff's work on the osmotic pressure of solutions (see Solution).Advertisement
The subject was taken up by Emil Fischer, who succeeded in synthesizing glucose, and also several of its stereo-isomers, there being 16 according to the Le Bel-van't Hoff theory (see Stereo-Isomerism and Sugar).
These deposits, in addition to having a high commercial importance, present certain problems which have received much attention, more particularly at the hands of van't Hoff and his collaborators, whose results are embodied in his Zur Bildung der ozeanischen Salzablagerungen, vol.
Stewart, Recent Advances in Physical and Inorganic Chemistry, 1909; see also van't Hoff, Lectures on Theoretical and Physical Chemistry, vol.
According to Perez Hilton, The Hoff himself will star in a musical about his life set to launch in Australia.
Hoff says he was "on medication" but other sources report the only medication he was on was came in a bottle and was served in the first class lounge.Advertisement
For someone that has spent his career playing men that rescue other people, it seems that "The Hoff" can't rescue himself from his own demons.
Learning the true height of celebrities has become something of a pastime for many fans, and The Hoff is often the subject of such inquiries.
The Hoff, as he is nicknamed, has been married and divorced twice, He has two daughters, Taylor Ann and Hayley, with his former wife, actor Pamela Bach.
If you are interested in his jewelry, visit the Hoff Shop online.
To get an original Believe It bracelet, you must visit the official David Hasselhoff site and go to the link titled The Hoff Shop.Advertisement
It's hard to imagine the fate of Speedos if The Hoff, as he's affectionately known, hadn't been daring enough to sling one on with a leather jacket for a promotional poster in the 1980s.
The idea of David Hasselhoff in a speedo may seem ridiculous today, but in the Hoff's heyday, those images were cutting edge.