Iron Definition and 497 Threads

Hello All, I have a sample which has been covered in a layer of iron and gold for protection. So, in order to work with the sample, we need to etch away the metallic layers. I hear there is a specific chemical recipe for chemically etching away iron and gold from a sample. If anyone can link...

[FONT="Georgia"][SIZE="3"]Homework Statement A rectangle bar of iron is 2cm by 2cm in cross section. Calculate its resistance if the resistivity of iron is 11 \times 10^{-8}\Omega{m}. Homework Equations R = \frac{Pl}{A} The Attempt at a Solution R = \frac{Pl}{A} A = 2 \times 2...

[b]1. This is a question about a lab. The absorbing solution used in the lab had a mole ratio of phen to Fe of 52.8:1 However, the complex [Fe(phen)3]2+ has a mole ratio of 3:1 for phen:Fe [Fe(phen)3]2+ is a coloured complex and we were determing iron concentration in a tablet. I don't...

I want to make a standard iron solution 1 g/L by using iron powder and i can't dissolve it by any way. Is anyone have an idea? thanks in advance.

http://www2.uah.es/jmc/ai14.pdf On page 2 of the above pdf there is an example in a box with title 'Acceleration' which states that there is a difference between a man pulling on a rope with 600N force and an iron weight of 60Kg (g = 10) tied to the rope. The difference being that once the...

I might be posting this in the wrong area. If so, sorry about that. :<) From what little I understand of the subject oral vitamin C helps the body absorb iron. Should this be the case, could topical vitamin C in combination with penetration enhancers also enhance dermal absorption of iron oxide?

determine the % of iron II and iron III in a mixture containing both, where i am given 200cm3 of a solution containing 1.3g of iron ions(Fe 2+ Fe 3+) using potassium magnanete. I wrote down the equation already, and method, but i don't know how to work out the % from it :/ Can you please help...

1. if one had a bar of iron that was magnetized and tossed it around on the asphalt, why does it get demagnetized. 2. how can i re magnetize it? 3. I don't get the question

Ok, this is from the first's: :wink: I have an iron stick of 3 inch long, If I insert this stick into a baz jar then immediately insert it into an acidic (H2SO4 liq) will that stick be worn out ? How do I know it is worn ? Thanks Joan John

Calculate the lattice constant of a body-centered cubic iron crystal using the molar mass of iron, the density of iron and the Avogadro number.

as i know, ferrous iron (Fe2+) will convert to ferric iron (Fe3+) if we mix water contain iron (such as groundwater) with chlorine. then the water should go through filtration process to filter the extractable iron (Fe3+). that how we can reduce the content of iron in water. my question...

when a compass is installed on an iron ship, why must there be small correcting magnets installed near the compass? Is it because the iron is itself magnetized somehow?

hi everyone this is a related rates question no one in the class could solve it. I could not find how to find the equation that relate all the things in the question.the question is: A spherical iron ball 8 in. in diameter is coated with a layer of ice of uniform thickness. If the ice melts...

[SOLVED] Iron ions I am curious about the properties of iron ions fe2+ and fe3+. As they are accelerated in a mass spectrometer, which would travel faster and have the largest radius. I understand that they have lost electrons and have a marginal loss in mass, as well I understand that a...

Ok, so I decided to make some rust. I had some steel wool lying around and decided to try the water/bleach/vinegar solution. I put 2 pieces of steel wool into a glass mason jar in the solution that covered the steel wool by about an inch. Then I put a plastic container over it to keep the...

Does anyone know a online store I can purchase a solder iron from? i need one at my house and my schools not letting me take one home. How much are they anyway?

Homework Statement You must devise a volumetric procedure to determine the percentage or Iron(ii) and Iron (iii) in a mixture containing both. You are provided with 200cm^{}3 of a solution containing between 1.1g and 1.3g of iron ions as a mixture of Fe^{}2+ and Fe^{}3+(aq). You may assume...

Consider two iron spheres, each of diameter 100mm, which are just touching. At what distance r from the center of the Earth will the force of mutual attraction between the contacting spheres be equal to the force exerted by the Earth on one of the spheres? Here's my work... d = distance...

Can iron oxide be reduced to metallic iron with methane in place of hydrogen?

heat turn iron to gold if heated?? Can Iron(Fe) be changed to gold(Au) if heated to a high enough temperature? My attempt Question 2 No, iron cannot be changed to gold by heating it to a high enough the temperature. Increasing the metal's temperature has no effect on the state.

If I were to go to a random hardware store and look at some iron, how would I be able to tell how soft or hard the iron was? Also, is there any other cheap magnetic material that would work better then iron to make an electromagnet with? Thank you for your time.

might be a naive question, but concerning the blast furnace: they blow pure o2 through the raw iron to oxidise impurities like carbon etc, but that would mean that exactly the right amount of o2 would have to be blown through before the iron also started reacting, which in turn means the...

I tried 1.000.000 on google and I didn't find nothing. So please help me. Thank you.

I have weighed a cast iron brake disc and got an average reading of roughly 4kg, id like to know how a stainless steel disc would compare with this weight (just roughly) and also, if a ceramic plate was added to the iron disc...any help appreciated...thanks! H

I would like to know what is the function of soft iron core? Is there a difference in function when inserting soft iron core in inductor , motor , generator ? Thank you

Hello, I have seen some very good analysis on this website. Therefore, I would like to get some comments on my idea. I was thinking how practical is to develop a sheild by rapid and powerful shooting of numerous Iron blades (with diameter and length slightly bigger than a bullet) over a...

Homework Statement For my science assignment coming up i need to know more about rusting on iron nails, like how and why it occurs, what conditions help the process, what conditions don't and any other information would be very helpful. I will be setting up my own experiment so help solve...

Greetings, i am assigned to do a project which requires us to do experiment on ways to separate the rusted iron into 2 elements which are Iron and Oxygen. Anyone have any idea about that?:bugeye:

If i take a piece of iron, and put it into a 0.1 mol/L solution of sodium dichromate, will rusting occur? If the solution was 1 mol/L, i could use my table of standard reduction potentials, and find the emf of the reaction, but 0.1 mol/L isn't standard conditions. How should i go about...

As far as I know Iron is used in many enzymes as the metal complex. Beyond this are there any biological uses for iron? All uses appreciated, ty.

While I know iron isn't the most common element in the universe, is it possible that there is a Jupiter + size planet made primarly of iron? Also, when it comes to black holes - would a massive iron planet form a black hole due to it's immense mass? What would be the minimum mass to form a black...

Can someone please verify my results? and help me in one-2 questions? I did this lab in school today and had some problems filling in the table that followed. In the lab, we took some Copper Chloride and mixed it dionized water. Then we added in an iron nail and waited for about 20 mins. After...

1.If the tube of a faulty barometer is pushed down into the mercury trough, the barometric height will further decrease. Why does this happen? 2. If I am provided with two similar bars, one is a magnet and the other is soft iron. How can I distinguish between them without using any other thing?

Does the concentration of iron in the mesophere change significantly and can it effect global warming?

Steel is a metal alloy whose major component is iron, with carbon content between 0.02% and 1.7% by weight Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another Stainless steel has a minimum of 10%...

Help explain to me the understandings behind running an iron flywheel compared to an aluminum flywheel (or vice versa) in a street car and or drag car. An iron flywheel (21lbs for example) will help a car get off the line better from a launch compared to a lighter flywheel (11lbs for example)...

can anybody let me know the estimation of C,S,Si,Mn and P in cast iron and steel? i will be thankful to all who will reply for this.:smile:

I am a EE student and haven't done any hands on stuff yet, but have a broken shortwave radio and i wanted to fix it. I bought a 15/30w iron from radio shack and a desoldering vacuum. I also got some 60/40 rosin core solder with a .32 dia. I am a little worried about the lead in the solder...

The hard iron bar called irony, that is. The irony of toothaches. My sadistic dentist informs me, my wisdom teeth are coming in all wrong and will necessarily need amputation. Poor hypocrite me, I had declared I'd sooner die naturally than go under the knife; now I've given in, to schedule the...

Hello everyone, I was studying for my electromagnetism test by doing questions from a textbook that I won at the university's open house. This means that I don't have the complete answer key and neighter does my physics teacher. While reading through it, I came upon an interesting question...

so there're: 0.041 kg ice cube at 0.0 *C 0.110 kg water at 40.0 *C in 0.062 kg iron cup at 40.0 *C Find the equilibrium temperature of the cup and its contents: ------- So what I tried doing was... I found the heat lost by water if cooled to 0 *C, which was 18418.4 J (mass of water *...

I am unsure how to do this question : Will acidified potassium manganate (VII) oxidise hydrogen sulphide to sulphur in aqueous solution? Will bromine oxidise iron (II) ions in aq solution ? Will iodine " " " " " " " ? any ideas

An iron bar of weight W is having its one end on the ground and the other on the shoulder of a man. The rod makes an angle alpha with the horizontal. What is the weight experienced by the man? If the same iron bar were balanced by two men, what will be the be the weight of the bar as...

how to test the component inside oxygen absorber in food?? we guess that there may be iron(II) or iron(III) ion. we use reducing agent or oxidzing agent to test it ? however, if both of them exist in the oxygen absorber, how can we distinguish them?? :confused:

Why does copper conduct heat better than aluminium and iron? Could anyone help me answering the question? Thanks.

I'm with a small doubt let me show for you: I have a solution: KNO3 + Fe(SCN)3 Plus: Na2SO4 (aq) I would like to know if could happen it? ---> NaNO3 + FeSO4↓ppt red + KSCN Or plus: NaOH (aq) Could Happen ? ----> NaNO3+ Fe(OH)3 ↓ppt red +KSCN Thank you Paulo

Hello All, Consider the following. Take a cylindrical magnet (say 2” long by 0.5” diameter and wrap it with iron wire in such a fashion that the windings do not touch (assuming it is uninsinuated). Wrap just enough turns of wire so that the magnet’s field is essentially short circuited...

I really don't know what catagoir this would go under :confused: , but its an assignment for chem so... Woud there be any positive envromental impacts of iron ore extraction? This was on of the topics we had to reaserch, but form 3 days of searching throught the net, positive effects iron ore...

Hi, I have searched rigorously for a solution to this problem but I seem to get inconclusive answers. I want to find the percentage purity of iron in cast iron and the best way to go about this is a redox titration. The first step is to reduce the Iron to Fe2+ . I intend to do this by...

I have noticed on cast iron surfaces that have been heated pretty well, they form craters on the surface. I have seen it on exhaust headers on cars where the timimg was wrong. I was wondering if this is a standard phenomenon and what action is occurring here to cause this? thanks John