What is the chemical composition of the white powdery substance inside incandescent lightbulbs?
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The phosphors\n\nhttp://www.sylvania.com/BusinessProducts/MaterialsandComponents/LightingComponents/Phosphor/FluorescentLamps/\n\nhttp://www.lgchem.com/en_products/electromaterial/display/phosphors/pdp_flor.html\n\nHow the bulbs work\n\nhttp://home.howstuffworks.com/fluorescent-lamp2.htm\n\nhttp://nemesis.lonestar.org/reference/electricity/fluorescent/lamps.html
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At room temperature, 0.968 g/cm³
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Exact composition will depend on manufacturer but this is close.\n\nABC DRY CHEMICAL- Clacium carbonate, magneisium aluminum silicate, monomonium phosphate, ammonium sulfate\n\nCO2- Carbon Dioxide\n\nHalon- Bromochlorodifluoromethane\n\nWater-  Water\n\nAFFF - Animal Protein \n\nClass K- Inorganic Salts \n\nPurple K- Potassium bicarbonate\n\nBC-  Sodium Bicarbonate\n\nClass D (Lithium Fires)-  Copper \n\nClass D (others)- Saran, magneisium aluminum silicate, sodium chloride\n\nFE36-  Hexaflouropropane
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The gas mixture within the latest halogen lamps is designet to interact with the tungsten that is vaporized from the burning filament so that it will not coat the interior of the lamp glass, which wpi;d otherwise dim the bulb, thus extending its lifetime.  It can also be used to affect the spectrum of  the emitted light, with differing gas mixtures altering the emission spectrum.
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flammable , orderless, colorless . have low frozen point ,reactive
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A lightbulb is a very cheap effective producer of heat!  Use something like a 15 to 25 watt bulb and make sure it holds the temperature steady at the correct level so you don't fry your eggs or they don't get cold.\n\nBTW a 100W lightbulb gives off 2% of the energy in light and guess what the other 98 watts are?  HEAT!
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http://en.wikipedia.org/wiki/Light_bulb#History_of_the_light_bulb
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If the white powder is sodium carbonate, when you react it with HCl, you will get carbon dioxide gas given off as one of the products of the reaction.. this gas is odorless.\n\nIf the white powder is Zinc Sulphide, when you react it with HCl, you will get sulphur dioxide gas given off as one of the products of the reaction, this gas smells like rotten eggs and is toxic.\n\nAs for the Zinc Gold mixture, you can use different methods of extraction.. both have different melting points.. you can melt the metal with the lower melting point and pour it off, or you can add a strong acid such as Sulphuric Acid to react with the mixture... Pure Gold will not react to the mixture,  all the Zinc will  react (in presence of enough acid) and become a salt that is soluble in water... then you just filter the gold out from the solution
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i think its acid..........The kind of batteries you have in your toys and CD player are wrapped in nickel-plated steel. This steel case has a thin plastic coating on the outside. Inside are the three main parts of a battery: the anode, the cathode, and electrolyte. The anode is made of zinc metal, and electricity travels from the anode through a circuit back to the cathode. The cathode is made of manganese dioxide and graphite. The electricity then passes back to the anode through the electrolyte, which is a salt and water solution. Batteries may have other parts inside made of plastic, brass, and other materials. For a look inside a battery, check out this Duracell page. For more information about the shocking world of electricity, explore the Yahooligans! Electricity category.
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The manufacturer may be able to supply you with the spectral analysis for a particular light source.  For example flourescent bulbs use UV to cause phosphors to emit light and may absorb most or all the UV in the process.
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An electric INCANDSCENT bulb uses a tungstene filament (twisted wire) that is heated by the current passing through to several hundred degrees.  It is this heat that heats the glass.  It is also the proof of inefficiency of the bulb, because it is transforming 80% of the energy it receives into heat, giving only 20% for light!\nIn the FLUORESCENT tubes, the light is produced by the ionisation of the internal gas (neon or argon).  This ionisation is initiated by heating two small filaments at teach end of the tube, that heat up a small drop of mercury.  Once the mercury is vaporised inside the tube, the "starter" opens, creating a high voltage puls across the whole tube, ionising the gas that then becomes conductor: a small current passes through the gas, and the filaments are disconnected.  Since the ionised and conductive gas has nearly no resistance, the current is limited by the "ballast" (an inductor inserted in series).\nSince the CURRENT is limited, there is no "Joule Effect" (heating) and the tube stays pretty cool.\nTheir efficiency is about 100 times more than a bulb... (in terms of power/light ratio).
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In terms of clear crystals and clear solutions, they do not absorb light in the visible range.\n\nIn terms of flame test, they all contain sodium ions, which give off a yellowish light when heated.
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It's impossible to say considering you give no indication of your lighting needs.\n\nThey do make fourescent bulbs which fit into regular incandescent sockets.  The flourescent bulbs use a lot less energy.
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It can be a powder, but that's usually cheap bunk shit thats around $10 a gram. It can look like a salt, most of it technically is(hydrochloride), anywhere from tiny uniform shards that are almost white because theyre so small, to bigger broken up shards that are clear with white in the cracks where they broke it up, to big fist sized shards that are clear. It can also be a dirty green or tan transparent which indicates the anhydrous ammonia wasn't cooked out all the way, or light pink transparent that actually can mean it's pretty good purity but the cook put in a small impurity to turn it that color kinda like a trademark.
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NA2SO4,KOH,AGCL,CA(NO3)2 ARE SOLUBLE.AND HG2BR2 AND CDS IS INSOLUBLE.
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The fact that no oxygen is present in a light bulb protects it
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what sort of a bleach are you talking about...\ngeneral bleaching powder is CaOCl2 Calcium Oxychloride or Calicum chloro hypochlorite. Apart from this H2O2 or hydrogen peroxide bleaches by oxidation. SO2 bleaches by reduction. Cosmetic bleaches are generally peroxide bleaches. The ones you use to wash clothes are CaOCl2