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Chlorine gas can be prepared in laboratory with hydrochloric acid and manganese-dioxide.


Put manganese lump in a round flask , now put concentrated hydrochloric acid into the round flask with tistle funnel and fit the flask with cork having a hole ,Now attach a tube into the hole of cork and leave to tube into an empty container,so the gas can be collected.The container must be sealed with cork having only one hole for the attachment of tube (from flask to container).Set the apparatus and there should be no leakage.Now heat the manganese lump and hydrochloric acid with a bunsen burner...
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Researchers from the unibersidad of
Connecticut recently unveiled their latest
invention , which is a long-lasting LED
light bulb that makes use of salmon DNA.
Scientists added two different fluorescent
colors to the DNA molecules, the dyes being
spaced from each other at a distance ranging
from 2 to 10 nanometers. After the colors
were added, the DNA molecules are spun into
nanofibers . The UV light that produces LED
is then covered with DNA nanofibers.
David Walt, a chemistry professor at Tufts
University , explained: "When UV light is
shined on the material, one dye absorbs the
energy and produces blue...
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added by Kamtsatka
Source: Gerry Garcia
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added by ThinkPink20
These people add rubidium and cesium to water. Both are alkali metals and highly reactive.
Sodium reacts with water.
Potassium permanganate solution changes colour when poured into sodium hydroxide and sugar solution.
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sodium polyacrylate is a super-absorber and can absorb 200 to 300 times its own weight this is used as fake snow
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Concentrated sodium hydroxide solution easily reacts with aluminum foil. One of the products of this reaction is the hydrogen gas.
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Making apoy with KMnO4+H2SO4 and acetone.
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Particle physics usually has a hard time competing with
politics and celebrity gossip for headlines, but the Higgs
boson has garnered some serious attention. That's
exactly what happened on July 4, 2012, though, when
scientists at CERN announced that they'd found a
particle that behaved the way they expect the Higgs
boson to behave. Maybe the famed boson's grand and
controversial nickname, the "God Particle," has kept
media outlets buzzing. Then again, the intriguing
possibility that the Higgs boson is responsible for all the
mass in the universe rather captures the imagination,
too. Or perhaps we're...
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added by Healerfan