Chemical News and Journal of Industrial Science, Tomy 105-106Chemical news office., 1912 |
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Strona 1
... copper electrodes , in a mixture of boron chloride with a large excess of hydrogen in a glass or copper vessel . The boron is thrown off in fine powder on to the walls of the vessel or agglomerates on the ends of the electrodes , where ...
... copper electrodes , in a mixture of boron chloride with a large excess of hydrogen in a glass or copper vessel . The boron is thrown off in fine powder on to the walls of the vessel or agglomerates on the ends of the electrodes , where ...
Strona 2
... copper following the sparking at the rubbing con- tact yielded a dust of extreme tenuity , such as could not arise from mechanical abrasion of the solid metal . Sir Walter Noel Hartley found that the amount of copper passing between the ...
... copper following the sparking at the rubbing con- tact yielded a dust of extreme tenuity , such as could not arise from mechanical abrasion of the solid metal . Sir Walter Noel Hartley found that the amount of copper passing between the ...
Strona 7
... Copper hy . droxide is less soluble in aqueous solutions of primary aliphatic amines than in ammonia , but I . 2 diamines con- taining two primary amino - groups are excellent solvents for it . One molecular weight of copper is always ...
... Copper hy . droxide is less soluble in aqueous solutions of primary aliphatic amines than in ammonia , but I . 2 diamines con- taining two primary amino - groups are excellent solvents for it . One molecular weight of copper is always ...
Strona 23
... copper ; since samples have been known to blister , and even perforate , a copper lamp , the testing of commercial kerosenes for such unstable sulphur was recommended . The author described a qualitative and quantitative method for the ...
... copper ; since samples have been known to blister , and even perforate , a copper lamp , the testing of commercial kerosenes for such unstable sulphur was recommended . The author described a qualitative and quantitative method for the ...
Strona 29
... copper , lead , and zinc , whose values may be said to be well fixed by occurrence and costs of production , we soon reach other metals , for which a new demand might well greatly reduce the cost . Among these are many whose ores occur ...
... copper , lead , and zinc , whose values may be said to be well fixed by occurrence and costs of production , we soon reach other metals , for which a new demand might well greatly reduce the cost . Among these are many whose ores occur ...
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