nitrate in drinking water
208218
If you own a single family (domestic) well, it is recommended that you test your water every three years for nitrates; more often if you live in an area with a history of high nitrate levels or if someone in your home is at risk from nitrate contamination. \n\n Reverse osmosis, ion exchange and distillation units could conceivably provide home treatment for removing nitrates from water, but those processes can be complicated, expensive, and generally require routine maintenance. Activated carbon and other simple filters do not remove nitrates to any significant degree. Home treatment units are generally not recommended, particularly as a permanent solution to assure nitrate-free water for infant use.
473444
The first reaction is simply wrong.  Nitrous acid does not ionize to nitrate.\n\nThe second reaction is a precipitation reaction, showing the net ionic equation.  The compound is ionic.\n\nThe third reaction is an example of SN2 displacement, not elimination.  Only single bonds are formed.
473694
It could if you are sensitive. Buy a Britta water filter this filters out the minerals. I use the jug type. Makes the water taste better also.
425919
1) dissolve in water\n     a) burn - yellow / orange flame flame = sodium\n         \n2) take pH - neutrals - lead compounds or chlorides (or poorly soluble calcium)\n     10 or so - sodium carbonate - heat the solution - if pH goes up to about 10 you have calcium hydroxide or calcium carbonate (More soluble in hot water)\n\n3) acidify - bubbles = carbonates\n     burn acidified solution red = Calcium\n\nAt this point you know if it is sodium / calcium / (or by elimination lead).\nyou also can differentiate all the calcium compounds, so all that is left is the lead compunds (carbonate would have been found, so tell the nitrate from the chloride)\nThe nitrate is 25 times more soluble in water, so you can tell from that\n\n1 test tube used
433922
All nitrates are soluble.  You would need to consult a table of solubilities to see what other ions you could use to precipitate out the cations.\n\nEx:  If you had silver nitrate in a solution you could add something with a halide ion such as sodium chloride.  The silver ion would precipitate out with the chloride ion.  If no ppt forms with the sodium chloride you know it was not silver ions.\n\nThen look for other ions that you could test for.
51343
Cool question!\n\nNow the easy answer is that fluorides are natural or man-made minerals which help prevent tooth decay. Most toothpaste will say something like "contains fluoride" like it is some big invention. D'oh! Many cities and towns add fluorides into the drinking water to help fight cavities. They add it at the local water treatment plant. \n\nChlorine is a chemical used in swimming pools, chlorine bleach, and in small amounts in town drinking water. It makes water safe to drink by killing dangerous germs and other tiny pests in the water. Hey head down to the town pool, you are going to get that familiar whiff of chlorine! P.U.!\n\nHere are some geeky links with all kinds of tech talk. I'd just ignore them since the practical answers is just "Dudes, Fluoride is a mineral which protects your teeth and Chlorine is a chemical which kills germs and stuff!"\n\nBest wishes!
383614
Well, it depends on whether the substance can dissolve in water. Generally, for ionic compounds, here are a few rules:\nAll nitrates are soluble.\nAll chlorides are soluble except for AgCl and lead (II) chloride (which is only soluble in hot water).\nAll sulphates are soluble except barium sulphate, lead (II) sulphate and calcium sulphate (slightly soluble).\nAll carbonates are insoluble EXCEPT sodium carbonate, potassium carbonate and ammonium carbonate.\nAll compounds of sodium, potassium and ammonium are soluble.\n\nThus barium carbonate is insoluble, (s). Silver nitrate, AgNO3, is soluble, (aq).\nSilver nitrate solution, acidified with sulphuric acid, is usually used in lab to test for presence of chloride ions. Formation of a white ppt of silver chloride indicates presence of chloride ions.\nHope this helps. :)
610250
Sodium nitrate (NaNO3) and its close relative sodium nitrite (NaNO2) are preservatives that you find in lots of processed meats. Stuff like salami, hot dogs, pepperoni, bologna, ham, bacon and SPAM all normally contain sodium nitrate as one of the ingredients. Fresh meats generally do not contain any added chemicals, so the question is, "Why is sodium nitrate added to all of these processed meats?" \n\nThere are two reasons for adding these chemicals to processed meats: \n\nThey preserve the color of the meat (meaning that it looks pink like SPAM rather than gray like cooked hamburger). You have probably noticed that nearly all meats that contain sodium nitrate or sodium nitrite remain pink or red even though they are cooked during processing. \nThese chemicals inhibit botulism to some degree. \nThe jury is out on how harmful these substances are. Sodium nitrite reacts with stomach acid and other chemicals in the stomach to produce nitrosamines, which have been shown to cause cancer in animals when consumed in large quantities. However, there's not much sodium nitrate/nitrite in meats, and we consume sodium nitrate/nitrite from other foods as well, so it is not clear that they are harmful in the quantities we get from meats. Some people recommend that small children and pregnant women avoid these chemicals altogether just to be safe. Since neither canned chicken nor tuna have any redness to protect, they generally do not contain nitrates.
157721
mostly water, fructose, cellulose, vitamns, minerals,
550599
Go to google or wikipidia and type in nitrogen regulators and tons of available info will pop up.....word....take care and good luck
22171
water, water and more water
99647
Actually, it depends...\n\nAll municipal water (if you get a water bill, it is municipal) is treated by your municipality with chlorine, and occasionally chloramines. With that said, chlorine is basically used to kill living organisms within in your water supply. Once you fill a glass, the chlorine will evaporate after about 3-5 days. Your water would not begin to develop bacteria until all of the chlorine in the water is evaporated. Now, if you are drinking chlorinated water, you might want to think about the carcinogens that are in it now more than a bacteria that may grow to a harmful level after you let it sit for about 3 months!\n\nIf you are talking about distilled water (NOT HEALTHY TO DRINK ANYWAY!) it can begin to develop bacteria within the first 48-72 hours just like any other beverage would.
65492
Uranyl nitrate (UO2(NO3)2) is a water soluble yellow uranium salt. Its molecular weight is 394.04 (anhydrous) or 502.13 (hexahydrate). and its CAS number is 10102-06-4[1] or 36478-76-9[2] (anhydrous) or 13520-83-7[3] (hexahydrate). It is used in photography. It is also used as a negative stain for viruses in electron microscopy; in tissues it stabilizes nucleic acids and cell membranes; uranyl acetate is used for the same purpose too.\n\nUranyl nitrate is a very toxic compound and should not be ingested; it causes severe renal insufficiency and acute tubular necrosis and is a lymphocyte mitogen.\n\nCrystals of uranium nitrate are triboluminescent.\n\nUranyl nitrate can be prepared by reaction of uranium salts with nitric acid. It is soluble in water, ethanol, acetone, and ether, but not in benzene, toluene, and chloroform.\n\nUranyl nitrate was used to fuel Aqueous Homogeneous Reactors.\n\nUranyl nitrate is important for nuclear reprocessing; it is the compound of uranium that results from dissolving the decladded spent nuclear fuel rods or yellowcake in nitric acid, for further separation and preparation of uranium hexafluoride for isotope separation for preparing of enriched uranium.
332207
There is a product made by HTH called pH Minus. (I'm sure there are other company's that make it as well), it's fairly inexpensive, around $14.00 for 1/2 gal. Just follow the directions and your water will be back to normal in no time at all. It works quickly! GOOD LUCK!
513391
decent drinking water
504483
The water first needs to be dechlorinared if using tap-water, use products sold at pet shops.  An aquarium needs to be cycling efficiently before it can support fish properly; bacteria that converts harmful nitrogenous waste (ammonia) into less harmfull stuff (nitrate) need to build up in the water, plants and substrate.  This bacteria may already be in the tank, but you can ensure it is by getting a plant, filter medium or substrate from a well established aquarium or buying commercialy products from your pet store.\nFirst you need to buy a few hardy fish, the number depending on the size of your tank. Platys and zebra danios are able to withstand a cycling tank and are ideal.\nThe fish will produce ammonia, this ammonia will build up and is very toxic, as levels of ammonia increase bacteria capable of converting ammonia into nitrite will build up. Nitrite is less deadly but levels of nitrite will increase until bacteria populations capable of converting nitrite into nitrate which is far less toxic ( you will still nedd to carry out weekly 10% water changes, using dechlorinated water, to ensure levels of nitrate don't get too high). After a number of weeks the tank will be able to cycle the waste of your fish from ammonia to nitrate, increase numbers of fish slowly, only 2-3 at a time.\nbuy test kits from your pet shop so you can monitor the various levels. \nBe patient, test your water, add few fish at a time and you'll soon have a healthy aquarium.
94115
Chlorination of drinking water eliminated typhoid, cholera, and dysentery that were commonly carried in drinking water when chlorination was introduced in the early 1900's.\n\nHowever, there are some negative effects:\nI quote:\n"... the July [1992] issue of the American Journal of Public Health, researchers found that people who regularly drink tap water containing high levels of chlorinated hydrocarbons have a greater risk of developing bladder and rectal cancers than people who drink unchlorinated water. The study estimates that about 9% of all bladder and 18% of all rectal cancer cases are associated with long-term consumption of these hydrocarbons. This amounts to over 20,000 new cases each year."\nhttp://www.chem.duke.edu/~jds/cruise_chem/water/watinorg.html\n\nEuropean water treatment has largely shifted to ozone and filtration, and they have found it works. Plus the chlorine residuals are about 10 times less than in US water.\n\nAnother negative effect of chlorination is that it can create what are known as trihalomethanes. One example of a trihalomethane is chloroform, which causes an allergic reaction in about 10% of the population. Chloroform, or trichloromethane can cause liver and kidney damage.  Fortunately the concentrations are monitored and are generally quite low. One trihalomethane, known as dibromochloromethane is associated with cancer risk of one per million at 0.6 micrograms per liter. That's about the same as 6 parts per billion. The cancer risk of this is only one per million, but that concentration is barely measureable, and most people ingest large quantities of drinking water daily, so it is not as insignificant as it may seem. \n\nBromine is also sometimes used, either in addition to chlorine, or as a substitute. This is the source of what I believe are the worst hazards, such as dibromochloromethane.\n\nAnother chemical that is added to drinking water is fluorine. Fluorine is added in much smaller concentrations than chlorine, and does substitute for some of the chlorine so it actually will reduce the amount of chlorination. You probably get quite a bit of fluorine in your toothpaste, as there is almost no toothpaste on the market today that does not contain fluoride. There are some potential negative health effects of fluoridation, however, there is lots of evidence that in the concentrations in most drinking water that it is beneficial more than harmful. Fluoridation is added in about 60% of US public drinking water.\nhttp://www.cancer.gov/cancertopics/factsheet/Risk/fluoridated-water\n\nIf you are concerned about your drinking water I suggest you use an activated carbon type filter and filter both drinking and cooking water. Not all activated carbon filters are created equal. Here is a source that explains what they will remove and what they won't remove:\nhttp://www.ext.nodak.edu/extpubs/h2oqual/watsys/ae1029w.htm\n\nDrinking bottled water does not mean you have avoided this problem. Bottled water is regulated in the US by the FDA, and must generally comply with the same standards as public drinking water. In many cases it is better because reverse osmosis, or distillation has removed any potential contaminants. One trade-off is that water in plastic bottles will absorb small quantities of phthalates. Studies that showed that phthalates caused cancer in rats were generally  dismissed as not being relevant to humans. They are also known to be broken down in the body within one or two days, so do not pose a risk of bioaccumulation. I quote:\n"The CDC report is, in all, very good news because the trace levels of phthalates found are within EPA safety levels and therefore should not pose a concern for human health."\nhttp://www.phthalates.org/yourhealth/human_exposure.asp