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Seite 34
It is then heated, first in open leaden pans, and then in vessels of glass or
platinum (as lead is attacked by the strong acid), until the excess of water is
driven off, and a sufficiently concentrated acid is obtained. So extensively is this
acid used, ...
It is then heated, first in open leaden pans, and then in vessels of glass or
platinum (as lead is attacked by the strong acid), until the excess of water is
driven off, and a sufficiently concentrated acid is obtained. So extensively is this
acid used, ...
Seite 54
The heated gases rising from the burning fuel are reverberated, or reflected, by
the arched roof of the furnace, and driven down upon the ore, and then pass off
through the fiuef. When the ore is sufficiently roasted, it -is allowed to fall through
...
The heated gases rising from the burning fuel are reverberated, or reflected, by
the arched roof of the furnace, and driven down upon the ore, and then pass off
through the fiuef. When the ore is sufficiently roasted, it -is allowed to fall through
...
Seite 56
It melts at 617°, and at a higher temperature volatilizes, though not in quantity
sufficient to be distilled. - The surface of the metal remains bright in dry air, but it
soon becomes tarnished in moist air, owing to the formation of a film of oxide; and
...
It melts at 617°, and at a higher temperature volatilizes, though not in quantity
sufficient to be distilled. - The surface of the metal remains bright in dry air, but it
soon becomes tarnished in moist air, owing to the formation of a film of oxide; and
...
Seite 65
... at the end of twenty-four hours it is placed upon a wooden table, the inclination
of which is increased from day to day until the mirror assumes a vertical position:
in about a month it is sufficiently drained to allow the mirror to be framed.
... at the end of twenty-four hours it is placed upon a wooden table, the inclination
of which is increased from day to day until the mirror assumes a vertical position:
in about a month it is sufficiently drained to allow the mirror to be framed.
Seite 69
When a mixture of oxygen and hydrogen is brought in contact with spongy
platinum, the heat developed by the condensation of the gases is sufficient to
ignite them. 91. SALTS OF MERCURYI—Mercury forms two oxides, the
mercurous, HgQO ...
When a mixture of oxygen and hydrogen is brought in contact with spongy
platinum, the heat developed by the condensation of the gases is sufficient to
ignite them. 91. SALTS OF MERCURYI—Mercury forms two oxides, the
mercurous, HgQO ...
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Handbook of Chemistry: For School and Home Use (Classic Reprint) W. J. Rolfe Keine Leseprobe verfügbar - 2017 |
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