why don't our blood get correded(rusted)even there is presence of oxygen and iron?
145630
The answer is actually quite interesting. The iron in a group called the Heme ring of Hemoglobin is oxidized by oxygen but not O as you would think. It's oxidized by elemental oxygen 02. The iron is not free. It is contained within a heme ring and it cannot be converted to free rust because it's actually contained within another structure. If the iron were to be freed then that might happen but free elemental iron in the blood is toxic I believe. Iron supplements do not have that occur though. If in need your body readily uses it but if you have iron in excess then it might be possible.
753805
Pure water......no!  Rusting is a very LONG process; however, if salt is present it acts to speed up the reaction.  Even if the nail is placed in salt water, it will not rust until exposed to oxygen.
476743
Rust is made of Iron (III) Oxide, not pure iron.  As for its crystal structure, I'm not completely sure.
511699
Yes, lemon juice and vinegar will cause iron to rust as well. It's like that old story where they say that putting a tooth in a can of coke for a day will cause the tooth to dissolve, yes it will, but the same could be said for putting a tooth in a glass of orange juice for a day as well. It's the acid in coke that causes the effects you're talking about, an Orange and Lemon juice and Vinegar all have more acid in them than coke does.
821724
Rusting of iron is an oxidation/reduction process which means there is a transfer of electrons.  Any soluble ionic compound will facilitate the transfer of the electrons and accelerate the oxidation process.
228915
Lobster Blood is transparent or white, but because Copper is used to transport oxygen around their bodies (whereas humans use Iron), oxygenated blood is slighty blue.
588190
Iron is necessary to make hemoglobin, the substance that carries oxygen through your blood to all the cells in your body. Hemoglobin is what makes red blood cells red. With insufficient iron, and therefore not enough hemoglobin, red blood cells become small and pale and don't carry enough oxygen. You may have heard the phrase "tired blood." This really means blood that is low in iron and that can't carry enough oxygen to vital organs and muscles. "Tired blood" results in a tired body. \n\nIron is needed not only for blood, but also for brains. Neurotransmitters, the neurochemicals that carry messages from one nerve to another, require sufficient iron to function properly. A person with an iron deficiency may have a tired mind as well as a tired body.
521265
All metals do not "corrode."  Some metals oxidize, such as iron turning to rust and silver turning black.\nSome metals do not oxidize, such as gold and platinum.\nNo health care professional would put a metal into your body if it rusted, corroded, or deteriorated in some other way.  The fact that the rods are 30 years old should be proof that your rods are not corroding.\nYour doctor should be the one to explain the term "hot."
387409
Hi there.. I'm a Licenced Dietetic Technician. The answer to your question....Anemia is a concern that can be fixed. Anemia is a condition in which the iron count in your blood is low meaning you have a hard time transmitting oxygen in the blood to other body parts. An easy solution is to take a simle daily supplement of 18mg/daily for 2 weeks. Then have your HGB and HCT checked again to see if the Anemia has improved. Make sure you also take a Vit C supplement with the Iron to help absorb the iron. Hope this helped. Your should have more energy because you'll have more oxygen flowing through your blood! Good luck and if you have anymore health questions feel free to ask. -Elizabeth Segler DTR/LDT
724303
Sounds exactly like you could be anemic...Get a full blood count test done - Your iron levels are probably low. Your iron level should not be lower than 12.0
679627
The more surface area is open to the air, or oxygen, the faster it rusts.  That's why a sheet, which is pretty much totally exposed, will rust fast, but not thick parts like the engine, etc.  Rust, after all, is the product of Iron mixing with Oxygen.  Also, steel is a mixture, more specifically a metal alloy, of iron with carbon.  Alloys with higher carbon content than this are known as cast iron.  Therefore, cast iron rusts slower than sheet metal also because it contains a lot of carbon, rather than being all iron.  I don't know what is better for the garden, but "cast iron" is actually steel, with high amounts of carbon in it.
531919
errrrrrr Oxygen, hence rusting is stricly called oxidisation.  But perhaps you should inform your questioner that Water is actually made up of Hydrogen and Oxygen, therefore some of the answers are obsolete.\n\nThink about the fact that metalwork inside a waterproofed building goes rusty as well as that outside.
676709
Because blood is the transport medium for all the cells in the body. In order for the cells to obtain the right chemicals (and dispose of the right chemicals) the blood itself needs to  contaion those chemicals.
373303
Pennies can't rust.  The chemical composition isn't right.  Rust is Ferric oxide and ferric is iron.  A penny contains, primarily, copper.
108960
Rust is the common name for a very common compound, iron oxide. Iron oxide, the chemical Fe2O3, is common because iron combines very readily with oxygen -- so readily, in fact, that pure iron is only rarely found in nature. Iron (or steel) rusting is an example of corrosion -- an electrochemical process involving an anode (a piece of metal that readily gives up electrons), an electrolyte (a liquid that helps electrons move) and a cathode (a piece of metal that readily accepts electrons). When a piece of metal corrodes, the electrolyte helps provide oxygen to the anode. As oxygen combines with the metal, electrons are liberated. When they flow through the electrolyte to the cathode, the metal of the anode disappears, swept away by the electrical flow or converted into metal cations in a form such as rust.\n\nFor iron to become iron oxide, three things are required: iron, water and oxygen. Here's what happens when the three get together:\n\nWhen a drop of water hits an iron object, two things begin to happen almost immediately. First, the water, a good electrolyte, combines with carbon dioxide in the air to form a weak carbonic acid, an even better electrolyte. As the acid is formed and the iron dissolved, some of the water will begin to break down into its component pieces -- hydrogen and oxygen. The free oxygen and dissolved iron bond into iron oxide, in the process freeing electrons. The electrons liberated from the anode portion of the iron flow to the cathode, which may be a piece of a metal less electrically reactive than iron, or another point on the piece of iron itself.\n\nThe chemical compounds found in liquids like acid rain, seawater and the salt-loaded spray from snow-belt roads make them better electrolytes than pure water, allowing their presence to speed the process of rusting on iron and other forms of corrosion on other metals.
237327
it happens , the partial perassure of o2 is less in cells than in hemaglobin so it diffusses in to cells frm hemoglbin
465870
Iron from the hemoglobin