material chemical composition as per isi standered?
958015
check out the site of Bureau of Indian Standards (BIS). It has catalogued references of specifications of various materials and standards.
394104
Yes. Everything is a chemical element.\n\nCSO2 I believe.
832783
e.g. of formula: Magnesium+oxygen=magnesium oxide\ne.g. of Mixture: Air\ne.g. of Compound: Magnesium oxide
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All materials shipped anywhere in the world will have a set of documentation appended. EIther it will be internal to a country, in which case the document could list what the substance is called locally, or it could be traveling internationally, in which case it must have a United Nations Identification Number.\n\n316 SS UN refers to the material known internationally as "stainless steel, grade 316".
1022742
calcium carbonate...\n\ncalcium and carbon....
839318
Hi. Iron, carbon, silicon, copper, oxygen (as part of silicon dioxide), hydrogen (as part of plastic).
97864
yes, with an alloy or equal or lower melting point
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Iron (II) SulfIDE\n\nSodium ChlorIDE\n\nSodium HydroxIDE\n\nand Lead...umm...something. *lol*\n\nThe answer is evidently (A). =D\n\n\n\nPS okay, so yea, someone already wrote what i wrote when i was typing it. sorry!
50274
Chemical equations show the molecular composition of compounds in a balaanced form between reactants and products. These are expressed in moles, or number of molecules, rather than mass. By matching the number of molecules needed for a reaction the result can be controlled better than if only mass were used. Excess or limited amounts of one element in a reaction might cause the product to be different than intended. Ultimately, a chemical engineer will convert the specifications to mass, but unless the molarity of the raw material is known this cannot be done properly.
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becos the paper u r burning may contain\nCopper sulfate\nBorax (Sodium borate)\nEach metal has a characteristic flame color which has been found to be useful in identifying minerals.
876010
all kinds of organi materials
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Try looking at a substances MSDS.  That is Material Data Safety Sheet.  If it is a pure substance that will be helpful. Just put the name of the substance and MSDS into yahoo and you'll find a sheet
845747
You have to run specific chemical tests for the material present, but usually more important is to test for known impurities.  For example, in NaCl you would test for K, Ca, and Mg.  These could vary by orders of magnitude, while the NaCl concentration may stay 99% within the limjts of its test.
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NA2SO4,KOH,AGCL,CA(NO3)2 ARE SOLUBLE.AND HG2BR2 AND CDS IS INSOLUBLE.
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Lead II Nitride\n\nCa(BrO2)2
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I can supply you said chemicals.\n(C2H5NH)(CH3)C6H3OH \nPlease contact me by email: halsliu@gmail.com
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Peter B has it right -- atomic absorption will do elemental analysis.\n\nAtomic emission spectroscopy is another tack, though a bit more challenging.