Chemical News and Journal of Physical Science, Tom 103Chemical news office., 1911 |
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Strona 8
... oxide . They were dried by burning off the alcohol , and weighed . The current was , of course , not absolutely constant , so there is a possible error of 1 or 2 per cent in the efficiency as calculated , but the results are ...
... oxide . They were dried by burning off the alcohol , and weighed . The current was , of course , not absolutely constant , so there is a possible error of 1 or 2 per cent in the efficiency as calculated , but the results are ...
Strona 28
... oxides , first the precipitate from the Schaffgotsch mercuric making these separations . Any iron from the vessel which oxide solutions ignited to drive off the mercuric oxide , may adhere to the enamel may be removed by means of a and ...
... oxides , first the precipitate from the Schaffgotsch mercuric making these separations . Any iron from the vessel which oxide solutions ignited to drive off the mercuric oxide , may adhere to the enamel may be removed by means of a and ...
Strona 29
... Oxide . - The filtrate from the iron and alumina is raised to boiling , treated with boiling ammonium oxalate solution , and digested on water - bath until precipitate readily and quickly settles after being stirred . The calcium ...
... Oxide . - The filtrate from the iron and alumina is raised to boiling , treated with boiling ammonium oxalate solution , and digested on water - bath until precipitate readily and quickly settles after being stirred . The calcium ...
Strona 30
... oxide or more accurately determined by dissolving in an ammoniacal solution of ammonium sulphate , containing 10 grma . of ammonium sulphate and 40 cc . of concentrated ammonia for each 0.3 grm . of cobalt , and electrolysing in a ...
... oxide or more accurately determined by dissolving in an ammoniacal solution of ammonium sulphate , containing 10 grma . of ammonium sulphate and 40 cc . of concentrated ammonia for each 0.3 grm . of cobalt , and electrolysing in a ...
Strona 31
... oxide of copper which may form during the melting . It has been used for years in the brass industry , and the memory of the " oldest inhabitant " fails to indicate the date of its inception . Common salt is so efficacious in reducing oxide ...
... oxide of copper which may form during the melting . It has been used for years in the brass industry , and the memory of the " oldest inhabitant " fails to indicate the date of its inception . Common salt is so efficacious in reducing oxide ...
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