The Second Step in Chemistry, Or the Student's Guide to the Higher Branches of the ScienceChurchill, 1864 - 774 páginas |
Dentro del libro
Resultados 1-5 de 100
Página 26
... contained in the third column indi- cate the quantities of water in pounds , the temperature of which would be raised 1 ... contain equal amounts of latent heat . 60. The heat absorbed in vaporization decreases as the temperature of the ...
... contained in the third column indi- cate the quantities of water in pounds , the temperature of which would be raised 1 ... contain equal amounts of latent heat . 60. The heat absorbed in vaporization decreases as the temperature of the ...
Página 30
... contains a small amount of water above its mercury column . These two barometers are enclosed in a tall glass cylinder ... contain- ing the mercury , and conse- quently the water in the glass cylinder , the water in the tube continues to ...
... contains a small amount of water above its mercury column . These two barometers are enclosed in a tall glass cylinder ... contain- ing the mercury , and conse- quently the water in the glass cylinder , the water in the tube continues to ...
Página 38
... contain 79 19 measures of nitrogen and 20-81 mea- sures of oxygen ; find the quantity by weight of these substances in 100 parts by weight of air . 23. What is the total quantity of heat in steam at 100 ° C. ? 24. A gas ( moist ) ...
... contain 79 19 measures of nitrogen and 20-81 mea- sures of oxygen ; find the quantity by weight of these substances in 100 parts by weight of air . 23. What is the total quantity of heat in steam at 100 ° C. ? 24. A gas ( moist ) ...
Página 41
... contain ? 39. A substance gave by Liebig's method 21.84 volumes of the mixed gases ; after the absorption of the carbonic acid the gas measured 84 volumes of how many volumes of CO . , and of how many of N , were the 2184 volumes ...
... contain ? 39. A substance gave by Liebig's method 21.84 volumes of the mixed gases ; after the absorption of the carbonic acid the gas measured 84 volumes of how many volumes of CO . , and of how many of N , were the 2184 volumes ...
Página 42
... believe that in the same volume or bulk all gases contain the same number of ponderable atoms set at equal distances , and whose natural repulsion is expressed by the same law . B $ 5 . As it is much easier to 42 COMBINATIONS BY VOLUME .
... believe that in the same volume or bulk all gases contain the same number of ponderable atoms set at equal distances , and whose natural repulsion is expressed by the same law . B $ 5 . As it is much easier to 42 COMBINATIONS BY VOLUME .
Otras ediciones - Ver todas
The Second Step in Chemistry, Or the Student's Guide to the Higher Branches ... Robert Galloway Sin vista previa disponible - 2017 |
The Second Step in Chemistry, Or the Student's Guide to the Higher Branches ... Robert Galloway Sin vista previa disponible - 2017 |
Términos y frases comunes
acetic acid acid radical action alcohol alcohol radicals aldehyde alkalies allyl ammonia ammonium anhydride anhydrous arsenic atomic volume atomic weights atoms of hydrogen atoms of oxygen bases bodies boiling point bromide C₂ H C₂H cacodyl carbonic acid chemical chloride chloride of sodium Cl₂ combination combustion compounds contain copper corresponding crystals cyanic acid cyanide decomposed decomposition density diatomic diffusion distillation elements equal equivalent ether ethyl ethylene formation formed formula gaseous gases glycerine glycol glycolic acid gramme H₂ H₂O Hofmann hydride hydrochloric acid hydrogen iodide isomorphous liquid mercury metals mixture molecule monamines monatomic monobasic nitrate nitric acid nitrogen O₂ obtained olefiant gas oxalic oxide oxygen phosphorus potash potassium pressure produced quantity of heat reaction replaced salts soda solid soluble solution specific gravity specific heat student substances substitution sulphate sulphuric acid temperature thermometer triatomic tube vapour volatile zinc
Pasajes populares
Página 491 - When the formulae of inorganic chemical compounds are considered, even a superficial observer is struck with the general symmetry of their construction ; the compounds of nitrogen, phosphorus, antimony, and arsenic especially exhibit the tendency of these elements to form compounds containing...
Página 695 - The colloidal is, in fact, a dynamical state of matter, the crystalloidal being the statical condition. The colloid possesses Energia. It may be looked upon as the probable primary source of the force appearing in the phenomena of vitality. To the gradual manner in which colloidal changes take place (for they always demand time as an element) may the characteristic protraction of chemico-organic changes also be referred.
Página 198 - A very valuable use of electro-chemical equivalents will be to decide, in cases of doubt, what is the true chemical equivalent, or definite proportional, or atomic number of a body ; for I have such conviction that the power which governs electro-decomposition and ordinary chemical attractions is the same...
Página 198 - I have such conviction that the power which governs electro-decomposition and ordinary chemical attractions is the same ; and such confidence in the overruling influence of those natural laws which render the former definite, as to feel no hesitation in believing that the latter must submit to them also.
Página 694 - Another and eminently characteristic quality of colloids is their mutability. Their existence is a continued metastasis. A colloid may be compared in this respect to water while existing liquid at a temperature under its usual freezing point, or to a supersaturated saline solution.
Página 692 - While soluble crystalloids are always highly sapid, soluble colloids are singularly insipid. It may be questioned whether a colloid, when tasted, ever reaches the sentient extremities of the nerves of the palate, as the latter are probably protected by a colloidal membrane, impermeable to soluble substances of the same physical constitution.
Página 694 - The inquiry suggests itself whether the colloid molecule may not be constituted by the grouping together of a number of smaller crystalloid molecules, and whether the basis of colloidality may not really be this composite character of the molecule.
Página 141 - Mercuric iodide separates from solution, and likewise sublimes at a very gentle heat, in scarlet tables belonging to the dimetric system; but when sublimed at a higher temperature in sulphur-yellow, rhombic tables of the monoclinic system. The red crystals turn yellow when heated, and resume their red tint on cooling. The yellow crystals obtained by sublimation retain their colour when cooled ; but, on the slightest rubbing or stirring with a pointed instrument, the part which is touched turns scarlet,...
Página 692 - A certain parallelism is maintained between the two classes, notwithstanding their differences. The phenomena of the solution of a salt or crystalloid probably all appear in the solution of a colloid, but greatly reduced in degree. The process becomes slow; time, indeed, appearing essential to all colloidal changes. The change of temperature, usually occurring in the act of solution, becomes barely perceptible.
Página 692 - It has been observed that vegetable gum is not digested in the stomach. The coats of that organ dialyse the soluble food, absorbing crystalloids and rejecting all colloids. This action appears to be aided by the thick coating of mucus which usually lines the stomach. The secretion of free hydrochloric acid during digestion — at times most abundant — appears to depend upon processes of which no distinct conception has been formed. But certain colloidal decompositions are equally inexplicable upon...