Chemical News and Journal of Physical Science, Tom 106Chemical news office., 1912 |
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Strona 6
... acid after fusion with potassium hydrogen sulphate , and almost completely soluble in concentrated sulphuric acid after digesting for several days . Titanium , tantalum , and iron appeared to be the chief ingredients , but tin , niobium ...
... acid after fusion with potassium hydrogen sulphate , and almost completely soluble in concentrated sulphuric acid after digesting for several days . Titanium , tantalum , and iron appeared to be the chief ingredients , but tin , niobium ...
Strona 8
... acid and the residual metal weighed . This is re - alloyed with silver by a second cupellation and parted in nitric acid , the residual metal being again weighed . Any difference shown between the two weighings is assumed to be , and is ...
... acid and the residual metal weighed . This is re - alloyed with silver by a second cupellation and parted in nitric acid , the residual metal being again weighed . Any difference shown between the two weighings is assumed to be , and is ...
Strona 9
... acid must be alloyed with silver and parted from the parting solution , a very dilute solution of hydrogen in nitric acid a second , or even a third time , before pro- sulphide should be used . One part of a strong solution ceeding to ...
... acid must be alloyed with silver and parted from the parting solution , a very dilute solution of hydrogen in nitric acid a second , or even a third time , before pro- sulphide should be used . One part of a strong solution ceeding to ...
Strona 12
... Acid and Glucose . - Jean Effront . - By the action of hydrogen peroxide lactic acid is readily converted into acetic acid according to the equation- CH2.CH.OH.COOH + O2 = CH3COOH + H2O + CO2 . The theoretical yield is very nearly ...
... Acid and Glucose . - Jean Effront . - By the action of hydrogen peroxide lactic acid is readily converted into acetic acid according to the equation- CH2.CH.OH.COOH + O2 = CH3COOH + H2O + CO2 . The theoretical yield is very nearly ...
Strona 14
... acid solution of the wolframite oxides was precipitated whilst boiling with hydrofluosilicic acid . ii . The fluorides thus precipitated were converted into sulphates by means of sulphuric acid , and the hydroxides were separated from ...
... acid solution of the wolframite oxides was precipitated whilst boiling with hydrofluosilicic acid . ii . The fluorides thus precipitated were converted into sulphates by means of sulphuric acid , and the hydroxides were separated from ...
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Strona 116 - What a piece of work is a man! how noble in reason! how infinite in faculty! in form and moving how express and admirable! in action how like an angel! in apprehension how like a god! the beauty of the world! the paragon of animals!
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Strona 123 - The world little knows how many of the thoughts and theories which have passed through the mind of a scientific investigator have been crushed in silence and secrecy by his own severe criticism and adverse examination ; that in the most successful instances not a tenth of the suggestions, the hopes, the wishes, the preliminary conclusions have been realized.
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Strona 184 - ... sold or offered for sale in the District of Columbia or the territories, or insular possessions of the United States, or if it be imported from a foreign country for sale, or if it is intended for export to a foreign country...
Strona 135 - As stated in the charter, it was intended "to give the highest specialized instruction and to provide the fullest equipment for the most advanced training and research in various branches of science, especially in its application to industry.
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Strona 85 - ... necessary for pursuing it to its full extent, it is proposed to raise a fund by subscription, for constructing a powerful battery, worthy of a national establishment, and capable of promoting the great objects of science. " Already, in other countries, public and ample means have been provided for pursuing these investigations. They have had their origin in this country ; and it would be dishonourable to a nation so great, so powerful, and so rich, if, from the want of pecuniary resources, they...