what is the best way to detect odors from a beaker?
961437
You don't want to smell straight from the beaker because that can be dangerous.  Keep the beaker away from your face and waft the "smelly air" with your hand to your nose.
208054
sniff some pepper or pluck a nose hair
913627
Hey, i'm doing that for Chem coursework too! AS right?\nanyway, im not entirely sure, but the most important bit you need is a gas syringe to measure the volume of gas.\nOther bits u will need r:\n-conical flask on tripod, with bunsen underneath.\n-A bung with a glass tube in, to put in the conical flask.\n-This tube leads to the gas syringe, via a rubber seal.\n-Remember the CaCO3 goes in the conical flask.\n-Now all you need to do is heat the CaCO3.\n\nYour welcome!
89141
One method is by solubilizing a portion of the polymer and analyzing via GC/Mas spectrometer. Another means would be to burn a portion of the polymer and trap the gases in a trap of sodium hydroxide solution. The solution could then be tested via specific ion electrode and the proportion of flourine could be calculated by knowing the volume of the trap solution, the concentration of fluoride in the trap and the mass of material burned.There are several other means of performing this analysis. One non-destructive test is via X-ray fluorescence. Each element has characteristic fluorescent lines. This method is not terribly sensitive for fluorine but might work well if one was dealing with percentage levels of fluorine.
798471
Assuming a pure substance, (this method will not work on mixtures).  \n1. Dissolve in Carbon disulphide.  (The compound is now banned in schools)\n2. Allow to evaporate in a fume cupboard.\n3. The presence of yellow rhombic like crystals is a test for S.\n4. Melt a sample and do a MP test.\n5. Melt a few grammes and allow to cool in air.  Needle like crystals will be formed.
1000570
Here's one: Measure the density of air.\n\nTake a flask, weigh it.\nVacuum out all the air, then weight it again.
151863
Either:\n\n(a) you're not getting a very clean separation, as the peaks should be vivid\n\nor\n\n(b) your detector is insuitable for the acids you're studying.\n\nAtleast, that's my analysis. Any A-Chem experts here?
1118096
laboratory apparatus ang its function
358092
Check the Omega online catalog. They have an extensive supply of measuring devices for lab, process, and manufacturing uses. Customer service is top notch.\n\nwww.omega.com
768671
I am a paranormal investigator and have caught many things on tape.a cheap emf detector as long as it is used with caution can be found at wal-mart. in their hardware department. I use one called live wire. it is an ac sniffer just turn down the sensitivity way down and stay away from ac lines . and when you come across an emf field the tester will flash and beep.. cost about $10 have video of this in use investigator was standing still aking questions and telling spirit to make the tester beep faster or slower acording to the questions answer.. kind of cool.. \n\nhttp://www.kiestronics.com/nwopis
478056
There are many different "organic vapor analyzers" on the commercial market.  The specifics of each depends on the detection mechanism used.\n\nSome systems use infra-red radiation, others use mass spectrometric techniques, some use photo-ionization, and still others use a small catalytic combustion chamber to determine the concentration of flammable organic vapors.\n\nCheck for more information at places like Lab Safety Supply, or other industrial safety product companies.
53470
Yeah, that's a good suggestion.  \nYou might also want to try stirring with a bulbous glass stirring rod or a rubber policeman very carefully.  Also, I think you'd be okay if you stir without making contact with the paper.  Perhaps the best suggestion, though, would be to pull through a little bit of your sample at a time; that way, your filter can handle pulling almost all of the liquid out of a small sample, then you add more in, etc., until it's all in and dry.
217873
Measure concentration. Use a dummy (with water only) measuring that with a LabPro probe. Then compare that to a certain volume of a variable soft drink. I did this in high school, hope it works!
483055
Wear your PPE (Personal protective equipment). The safest way would probably be to dispense it in a fume hood, with secondary containment (e.g. inside a container with boundaries). You'll want the secondary containment to contain something that can neutralize the base, such as a weak acid. This is for the liquid.\n\nThe solid sample should be dispensed in a fume hood, using a scoopula to transport the sample after it has been poured out.
234381
In order to do this you will most likley have to also apply a voltage to the wire in order to drive the reaction.  Also, the bridge between the 2 beakers must be conductive, so there has to be some sort of electrolyte soaked into the bridge.  i would suggest using a simple copper sulfide solution in the plating side of the cell, and using an iron electrode in the other beaker.  electroplating is sometimes quite complex so you may want to consult a chemist regarding your final setup.
980626
ChemDraw from CambridgeSoft Corporation may be help you. Look at www.cambridgesoft.com
793219
Lead acetate (lead(II) ethanoate) is used to detect the presence of hydrogen sulphide, H2S. A strip of paper is soaked in the solution, and held in the stream of the (smelly) gas. If the paper turns black (with lead sulphide, PbS) then hydrogen sulphide was present.\n\nPb2+ + H2S ---> PbS + 2H+\n\nThis used to be frequently done in UK schools, but no longer.