The Fundamental Principles of Chemistry: Practically Taught, by a New MethodLongmans, Green, and Company, 1888 - 364 Seiten |
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Häufige Begriffe und Wortgruppen
alkalies ammonia ammonium anhydride atmosphere atomic weights barium barometer bodies boiling boiling-point bottle burning calcium carbon centimetres chemical chloride cold colour column of mercury combination combustion compound containing cooling copper cork crystallisation cubic centimetres cubic foot cubic inches decomposed degree density dioxide displaced dissolved distilled elastic force elements employed equal volumes example expansion experiment ferric ferrous filled flame flask gaseous gases glass grains gramme H₂O hydrate hydrochloric acid hydrogen ignited insoluble iodine iron liquid litre matter measure metal millimetres mixture molecules nitrate nitric acid nitrogen obtained oxalate oxide oxygen particles phosphorus potassium potassium chloride potassium nitrate pound precipitate pressure produced properties proportions quantity of heat salt set free silver sodium sodium chloride solid soluble soluble in water specific gravity specific heat student substances sulphate sulphide sulphuric acid temperature termed thermometer tion tube unite vapour vessel whilst zinc
Beliebte Passagen
Seite 59 - foot-pound ' has been introduced to express, in a convenient way, the lifting of one pound to the height of a foot. Thus the quantity of heat necessary to raise the temperature of a pound of water one degree being taken, as a standard, 772 foot-pounds constitute what is called the mechanical equivalent of heat.
Seite 59 - The immediate cause of the phenomena of heat then is motion, and the laws of its communication are precisely the same, as the laws of the communication of motion.
Seite 67 - The straight line or distance between the centres of the transverse lines in the two gold plugs in the bronze bar deposited in the Office of the Exchequer shall be the genuine standard of length ifc 00 at 62° F., and if lost it shall be replaced by means of its copies.
Seite 85 - ... filled with cylinders of air and mercury having a downward motion. Air and mercury escape through the spout of the bulb B which is above the basin H, where the mercury is collected. It is...
Seite 4 - ... to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be more coarse grained than a heap of small shot, but probably less coarsegrained than a heap of footballs.
Seite 85 - Mercury is allowed to fall in this tube at a rate regulated by a clamp at c; the lower end of the tube cd fits in the flask B, which has a spout at the side a little higher than the lower end of cd; the upper part has a branch at x to which a receiver R can be tightly fixed. When the clamp at...
Seite 240 - Law, which states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Seite 144 - Regnault, one gramme of atmospheric air at the level of the sea, in the 45th degree of latitude, at 0° C., and under a pressure of 760 mm. of mercury, occupies a volume of 7 7 3 -5 2 6 cubic centimetres In the latitude 52° 36...
Seite 56 - In all these cases the quantity of heat which enters or leaves the body may be measured, and in order to express the result of this measurement in a convenient form, we may call it the latent heat required for a given change in the substance. We must carefully remember that all that we know about heat is what occurs when it passes from one body to another, and that we must not assume that after heat has entered a substance it exists in the form of heat within that substance.
Seite 245 - The actual weight of this cube of hydrogen, at the standard temperature and pressure mentioned, is 0'0896 gramme; a figure which I earnestly beg you to inscribe, as with a sharp graving tool, upon your memory. There is probably no figure in chemical science more important than this one to be borne in mind, and to be kept ever in readiness for use in calculation at a moment's notice. For this litre-weight of...