How to make phospating liquid used in the phospating process ?
468844
First of all unless you are sure you have the proper equipment I wouldn't mess with phosphoric acid.  The phosphoric acid and the zinc oxide could be enough depending on what type of metal you are trying to clean.  If the metal you are trying to clean has a higher reduction potential than zinc then your good otherwise you will need a catalyst.
214979
You can check out this site, it explains a step by step technique:\n\nhttp://www.pall.com/biosepra/34696_7290.asp
328683
http://www.indiana.edu/~bradwood/eagles/phosphate.htm\n\nhttp://pronet-internet.merck.de/Attachment/17795.ProNet.pdf?file
285749
Well i can't paste that on here for you...but consult this link; http://www.abb.com/GLOBAL/NOOFS/noofs187.nsf/viewunid/713C646EB0A24CCBC12569EE0036977F/$file/PS.pdf#search='MAKING%20POLYSTYRENE%2C%20process%20flow%20diagram'\n\nIf u can't access via the above link, go to http://www.search.abb.com Then type 'making polystyrene' or :PS Web 2001" Folow the first link...its a pdf file.
482888
I'm guessing that your question pertains to the series of standard solutions you would prepare using the stock solution and volumetric flasks/pipette.  \n\nYes, you can use the C1V1=C2V2 formula, however there's a more practical and faster method that can be arrived at through common sense.  That is the concept of dilution factor.  If you have a stock solution of .5M iron for instance and you wanted to make a .05M iron solution, just dilute the next solution by a factor of 10%.  One way this can be achieved is by taking 10 mL of this stock solution using a volumetric pipette and adding it to a 100 mL volumetric flask.  To lessen the sampling error, it's better to take a larger sample volume, but usually this becomes tedious since lab equipment can be limited.\n\nSo take the original x molarity stock solution.  And if your final desired concentration is y, then the dilution factor is\n\ny/x \n\nThis percentage, y/x, represents the volume percentage in the final solution, that is multiply y/x by the particular To Deliver volume of the volumetric flask, to determine how much volume of the stock solution you need.......place this solution into the volumetric flask with a volumetric pipette, and then dilute to the mark with the standard solvent.
15138
you boil fat down, and let it cool into layers.  (this will happen naturally.)  take the hard layer of fat off the top, and mix it with lye.  lye can be obtained by mixing hearth ash with water.. a sort of highly toxic and corrosive "tea", so to speak.  (by hearth ash, i mean ash from the hearth..  wood ash from a cooking fire.)  you mix the lye with the hard fat, and it should start to foam up a bit.  keep stirring until it settles (stir with a wooden spoon.. not metal, for metal with react with the soap-in-progress.)  pour the foul-smelling liquid into molds, cover them, and let them sit for at least 7 months.  it takes this long for the lye to finish reacting with all that animal fat.  once the soap has cured, it's ready for use.\n\ni'm sorry, but i do not remember the exact proportions that go with with recipe, but i'm sure you can find that somewhere online.
889419
1) Decide what solvent you want to use: water or organic?\n2) Decide how much solution you want: 1L?\n3) Check the solubility of phenol in the solvent you choose. And calculate how much phenol you'll need by weight to make a saturated solution\n4) Find out the relationship between solubility and temperature.\n5) I assume you want to make a saturated phenol solution at room temperature. If the solubility increases as temperature goes higher, add a bit more phenol than needed (from the calculation above) to the solvent. \n6) Heat the flask or beaker that contains the solvent and phenol until all phenol dissolves.\n7) Let the container cool down to room temperature.\n8) If no phenol crystalizes the solution is over-saturated. You may rub the side of the flask or beaker to help phenol crystalize.\n9) You have your saturated phenol solution!!
1186593
Mix with a 0% solution in the relation 33:2\n\nSo use 2 units of your solution (like 2 liters) and 33 units of the 0% solution (like 33 liters).\n\nThat's all.
721022
Well, I do not know that syllabus.  You will need to sift useful answers.\n\nI would use:\n\ndifferent solubility in solvents\ndifferent boiling points\nrecrystallise one out of a mixed solution\n\nYou might be at too junior a level to know about ion exchange resins, and other chromatography techniques.
862240
Depends on the ingredient.  Usual procedure is to chop the plant in a blender and extract the active principle with a suitable solvent, and then refine the extract with fractional crystallization, distillation, or other such means.
500934
Combine 19 parts of solvent with 1 part solute.  Boom, 5% solution.  \n\nIf you have an already diluted substance, just figure out the ratio and try to make it 1/20.  For example, if you have a 50% solution of NaCl and water, add two parts (2*50% is 100% or 1 part) of it to 18 parts water to make a 5% NaCl and H20 solution.
457193
Here is the one I recently made:\n\nTake a transparency sheet and take ear buds (used for over head projectors)- lots of them. Dip the top of cotton part, of a bunch of ear buds, in glue and place them vertically on the transparent sheet. Go on doing this to make a square tightly filled with ear buds.  Note: you will have to give support to the ear buds until they are glued completely. \n\nNow you can apply the glue on the other side of ear buds and place another transparent sheet. Paint the central region of the ear bud-sticks with black colour. If required, cover the sides. It now looks like a square piece taken from a region in the plasma membrane.\n\nThe cotton ends now look like the hydrophobic layers on either end while the central region looks like the hydrophilic ends of phospholipids. If you want to elaborate, you can include proteins in the bilayer! You can use colour papers, ribbons etc (you can stiffen them by dipping in some glue and drying in the shape you want; I have also seen hair-bands available that form specific ion-channel like structures. Goodluck!
831401
Put it in hot water.\n\nTo slow the process put it in ice cold water.
236330
u can prepare prontosil from meta-phenylene diamine and sulphanilamide.
302581
add 2 parts HCl 1 part H20 to dilute properly
1095569
check this link-- http://www.orgsyn.org/orgsyn/prep.asp?prep=cv6p0468.\n\ninstead of Me use Ph
628263
Make Bubble solution\n\nDifficulty: Easy\n\nTime Required: 10 minutes plus rest time\n\nWhat You Need:\n1/2 c. dishwashing liquid\n4 1/2 c. water\n4 T. glycerin\nlarge covered container\nbubble wands\n\n\nHere's How:\n1.   Combine 1/2 cup dishwashing detergent, 4 1/2 cups water, and 4 tablespoons of glycerin in a large container with a cover.\n\n2.   Mix well, then allow the mixture to rest, covered, until ready for use.\n\n3.   Pour bubble solution into a shallow container. Dip bubble wands -- such as cookie cutters, shaped pipe cleaners or wire -- into the solution and blow!\n\n\nTips:\nJoy is usually the recommended brand of dishwashing liquid.\nFor best results, use distilled water.\nAs an alternative to glycerin, some recipes recommend using white corn syrup.