Applied Chemistry: An Elementary Text Book for Secondary SchoolsC.V. Mosby Company, 1922 - 461 σελίδες |
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Σελίδα 43
... considerable number of hydrates are able to part with all their water at ordinary room tempera- ture and usual atmospheric conditions . Such hydrates are said to be efflorescent . Efflorescence may be defined as the property which some ...
... considerable number of hydrates are able to part with all their water at ordinary room tempera- ture and usual atmospheric conditions . Such hydrates are said to be efflorescent . Efflorescence may be defined as the property which some ...
Σελίδα 53
... considerably above that of the or- dinary room ; but if the dish be roughened or scratched the decomposition becomes rapid . In all these cases , the powdered metals , the charcoal and the roughened plat- inum serve as catalytic agents ...
... considerably above that of the or- dinary room ; but if the dish be roughened or scratched the decomposition becomes rapid . In all these cases , the powdered metals , the charcoal and the roughened plat- inum serve as catalytic agents ...
Σελίδα 60
... considerable quantities . It is blue in color . It is much more soluble in water than oxygen ; at 12 ° C. 100 c.c. of water will dissolve about 50 of ozone , while even at zero only 4 c.c. of oxygen would be dissolved by the same volume ...
... considerable quantities . It is blue in color . It is much more soluble in water than oxygen ; at 12 ° C. 100 c.c. of water will dissolve about 50 of ozone , while even at zero only 4 c.c. of oxygen would be dissolved by the same volume ...
Σελίδα 72
... considerable number of gases was discovered and the air itself received a very careful study in its rela- tion to combustion . Even thus , until near the end of the century , all the gases known were regarded as modifications of ...
... considerable number of gases was discovered and the air itself received a very careful study in its rela- tion to combustion . Even thus , until near the end of the century , all the gases known were regarded as modifications of ...
Σελίδα 76
... considerable numbers , as photoplay houses , theaters , and the like . Health boards in many cities require that means shall be provided for furnishing 30 cubic feet of fresh air per minute per individual . In the ordinary home where ...
... considerable numbers , as photoplay houses , theaters , and the like . Health boards in many cities require that means shall be provided for furnishing 30 cubic feet of fresh air per minute per individual . In the ordinary home where ...
Άλλες εκδόσεις - Προβολή όλων
Applied Chemistry: An Elementary Text Book for Secondary Schools (Classic ... Fredus N. Peters Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Applied Chemistry: An Elementary Text Book for Secondary Schools (Classic ... Fredus N. Peters Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
2H₂O alcohol alkali alloys alum aluminum ammonia ammonium amount antimony arsenic arsine atomic weight blue boiling bromine burning calcium called carbon dioxide carbon monoxide cent Characteristics chemical coal color combustion common salt compounds contain copper crystals decomposed dissolved elements equation Exercises for Review ferric ferrous flame foods formula furnace gases Give glass grams H₂O H₂SO heat hence hydrate hydrochloric acid hydrogen chloride hydroxide ignited iodine ions iron known light lime liquid liter magnesium melting mercury metal method mixed mixture molecular weight molecules monoxide Name nitrate nitric acid nitrogen obtained occurs oxide oxygen ozone phosphorus platinum potassium potassium chlorate pounds powder prepared pressure produced quantities reaction removed seen silicate silver soap soda sodium carbonate sodium hydroxide solid soluble in water solution starch substances sugar sulphate sulphide sulphur dioxide sulphuric acid temperature tion tube usually valence vapor variety volume yellow zinc zine
Δημοφιλή αποσπάσματα
Σελίδα 173 - ... gas may be expelled from a liquid, viz. : 1. When the liquid is supersaturated, the excess gas is expelled. 2. By heating the liquid, when some of the gas is expelled due to an increase in its volume. 3. By pressure reduction, as in the Elmore vacuum process, where, according to the law of Henry,14 "the amount of gas dissolved by a liquid is proportional to the pressure to which the gas is subjected.
Σελίδα 100 - Weights. — The molecular weight of a substance is the sum of the weights of the atoms constituting a molecule of that particular substance.
Σελίδα 251 - ... in the form of a fine powder, known as flowers of sulphur, and composed of minute crystals.
Σελίδα 266 - In this way he had lithium, glucinum, boron, carbon, nitrogen, oxygen, fluorine, sodium, magnesium, aluminum, silicon, phosphorus, sulphur, chlorine, potassium, calcium, and so on.
Σελίδα 96 - Risteen's work upon molecules (now for many years a standard authority), the distance from the center of one molecule to the center of its neighbor is put, on the average, as ten times the molecular diameter.
Σελίδα 101 - Avogadro that equal volumes of all gases under the same pressure and temperature contain the same number of molecules.
Σελίδα 89 - In the mercurial barometer at sea level, the pressure of the air supports a column of mercury 30 inches in height or, in other words, the weight of 30 inches of mercury.
Σελίδα 266 - Mendeleeff arranged the elements in the order of their atomic weights, beginning with the lightest, but omitting hydrogen.
Σελίδα 384 - Orichalcum may be defined as an alloy of copper and zinc in which the proportion of zinc is high enough to give it a color that is appreciably different from that of copper, and in which the proportion of any other metal, or combination of other metals, is considerably lower than that of the zinc.
Σελίδα 26 - Per Cent Oxygen 49.98 Silicon 25.30 Aluminum 7.26 Iron 5.08 Calcium 3.51 Magnesium , 2.50 Sodium 2.28 Potassium 2.23 Hydrogen 0.94 Titanium 0.30 Carbon 0.21 Chlorine and Bromine 0.15 Phosphorus 0.09 Manganese 0.07 All others . 0.10 Total 100.00 Table II.