Iron Definition and 497 Threads

Homework Statement The density of bcc iron is 7900 kg/m3, and its atomic wieght is 56 amu. Using this information, calculate the lattice constant of iron's cubic unit cell and the interatomic spacing (i.e. nearest neighbor distance). Homework Equations The Attempt at a Solution...

Hello everyone, Is their simple reason for this. Like how there must be 8 electrons in outer shell,I know that is very basic and probably not applicable, or is this something to do with sub shells etc. Also in billirubin metabolism. Why do red blood cells produce hemin which is iron in...

I am a mechanical engineer who is writing a science fiction novel where a means has been discovered to temporarily reduce the mass of the nucleus of certain 56Fe atoms. When a certain field is applied to the iron, it gets lighter. When the field is removed, the iron regains its original mass...

1. Homework Statement 10) Both iron (III) oxide and copper (IV) oxide are mined for use as primary ores in the production of pure iron and copper respectively. Historically, the earliest use of copper tools appears to be around 4500 BC. Iron tools appear much later; European artifacts have...

Why does an iron nail always get attracted to a bar magnet? You think one side would attract it and on side would repel it, Is this because When I bring the magnet close to the nail does it causes the domains to flip so it attracts it, Is this similar to why a neutral object gets attracted to a...

This is the experiment that I did in class, please read the whole thing before posting: http://www.chem.uic.edu/fetzer/chem222/Exp_19.pdf How do I calculate the molarity of Fe(o-phenanthroline) in each solution? So I was thinking of doing this: According to the pdf there are 2.5 grams of...

I am aware that fusing two iron nuclei together is highly endothermic. But at what temperature does it begin. Does anybody have a clue? I know that fusing two hydrogen nuclei begins at 10 to 14 million Kelvins and that helium fusion begins at 100 million Kelvins. It wouldn't surprise me that...

Hi just wondering if you could help, I've stumbled across an example question where the iron purity is meant to be above 80% when 8H+ + 5Fe2+ + MnO4- → 5Fe3+ + Mn2+ + 4H2O 15cm3 is titrated and concentration of potassium permanganate used is 0.02M So far I have worked out Number...

Interesting documental about how Latin America suffered from anti-communism and how is still under threat. This parts talks about my country El Salvador. http://www.youtube.com/watch?v=x5NmZ-PdwIo&feature=related An this is part 1 if you wana see the whole documental. This...

Homework Statement Basically, I missed a quiz question that had to do with solubility. According to the instructor's own rules AND everything I have read online, iron (iii) carbonate is insoluble. Homework Equations The Attempt at a Solution

Sorry if this question is too elementary (no pun intended) for this forum. If stellar fusion of iron takes more energy than it produces, how are heaver elements formed? Cheers, JP

Why is it iron 2 and not iron 3? Hi all Upon the reaction of Hydrochloric acid with Iron.. the following equation represents the reaction: Fe + 2HCl -------> FeCl2 + H2 Why isn't the product FeCl3? I don't understand what makes it not possible for iron to form this chloride salt...

Hi all this is my first post. I would like to see magnetic flux is there anyway I could do this I remember at school many years ago using iron filing. I would like to see the results of magnetic shielding

So if a reaction involves Fe2+ and the same reaction involves Fe3+, which one would occur at a faster rate? I know that the nature of the reactants has to due something with this difference in the rate of the reaction but I'm not sure how to explain it. what about C2O42- (oxalate) and 2CO2...

Let assume a desert with very deep sand and an iron ball on the ground level. Due to small perturbations (wind, small earthquakes, etc.) the iron ball will sinking down. Is there an equilibrium level, or the iron ball will sink down to "negative infinity level"?

My (high school, gah!) textbook gives an experiment: I take a straight current carrying conductor, a cardboard sheet is placed perpendicular to the conductor, so that the conductor passes straight through the sheet, remains perpendicular. Then I use a salt sprinkler to sprinkle iron filings on...

Hi, I'm writing a science fiction story and in the future we are having to bring iron asteroids down to Earth. These asteroids are 1 to 3 miles in diameter and shaped charges brake up the asteroid and push it down into the atmosphere in such a way that the house size chunks land in an...

Hi everyone Does anyone know of any source where the total amount of iron in the solar system has been estimated? Free iron, isotopes, oxides, etc. I've been reading here and there about element abundance on Earth and in the cosmos, and am curious if solar percentage of iron is...

I've never taken physics, and I'm not even sure this is physics. :S On the hint it mentions, think of freshmen physics, but I honestly have no clue. Could someone help me out on how to even start this problem? Estimate the weight savings if a typical automobile engine (100 kg) is made of...

Hi Please look at this link. It is only very brief. It describes how to extract iron from iron oxide on a match head. My questions are: where does the carbon come from in this equation Iron(III) oxide + carbon → iron + carbon dioxide 2Fe2O3(s) + 3C(s) → 4Fe(s) + 3CO2(g) Is it...

An iron plate would glide through magnetic field lines from the more separated towards the more condensed of a permanent magnet. If we use a magnetic shield to make a trap where that iron plate finds itself in dead area (no magnetic field lines) then it would continue the motion it gained...

How does the water pump inside a steam iron work?

(skip this paragraph if you just want the math) I had some free time today, so I thought I'd toy with the impossible hilarity of the Arc Reactor from the Iron Man films. My first line of calculation was on the magnetic field that would be generated if 1/10th of the power output (3 gigawatts!)...

[FONT="Comic Sans MS"]If iron is the last element to undergo fusion wouldn't it be expected to be at a controlled state. Ie: if the pile wants to go toward Hydrogen, bump up the fusing protons. If it to go beyond the Iron tipping point toward Uranium, adsorb protons. From the Binding Energy...

Homework Statement I have been working on a University Physics thermodynamics problem for over a week now, day and night. I've consulted two physics PhDs, posted on Yahoo Answers (nobody took the bait) and I'm still stuck. I just wasted an hour and a half carefully posting my problem and...

Hello everyone, In anameia related to iron, plasma tranferring increases and iron decreases. How does this increase the total iron binding capacity of the enzyme. If I draw a sample of blood, there would be some transferrin enzymes in excess lowering iron binding capacity right? Thanks :smile:

http://www.youtube.com/watch?v=ibFtijBf3zE&feature=related Please visit that website.. Is that think include of prepetual motion? Have some one founded prepetual motion formula? Could you explain to me, how that works?and how to make it?

what is the absorption spectrum in UV radiations of iron?

Has anyone seen the part of Iron Man two where they combine the major scientific advances of the past centruy into a single scene where he makes a new element? For those who haven't, I will summarise; - He builds a particle accelerator in his front room showing no evidence of large...

I have to put a spreadsheet together which tells me the most mechnically effecient and cost efficient configuration of a pump, piping, values, etc. Where can I find industry pricing for galvanized iron pipes and labor costs? thanks

Homework Statement A mass of iron ore weighing 0.2792g was dissolved in dilute acid and all the iron was converted to Fe2+(aq). The iron II solution required 23.30ml of 0.0194M KMnO4 for titration. Calculate the percentage of iron in the ore.Homework Equations Wrote out my redox reactions...

Why is iron magnetic and copper is not?

Hello; Why are only iron, cobalt and nickel magnetic, and not any other material? Is it due to their unique electron configurations, or due to something else? Thanks.

Hello, I have recently been tasked with finding the permeability of iron at a frequency of 10 kHz. I have never done research before, this is my first time, I been looking all over the internet (IEEE, elsevier, ScienceDirect, etc...) for anything that might give me information on the subject...

I am just an electrician doing experimental work with a Stubblefield coil. From what I've read the most common steel is 1018. If Stubblefield used a common bolt I assume this would fall into the 1018 realm. Would the 1018 iron core be better cold rolled or hot rolled for the magnetic collapse as...

Homework Statement i am trying to make an air flow meter using an heating element which i got from an iron..basically i have thought of inserting the element into a duct through which i will pass air using a blower,to connect the element with a 12v supply in series with a ammeter...thn i...

I got a few questions about transformers.. I understand there is a primary winding and secondary winding wraped around a iron core. Now for the primary connection - take 7.2kv 1 phase line and connect it to one side of the winding and take ground (earth) to the other winding end. On the...

Hi all I have kind of an odd question, it has been quite hard to find an answer for. I'm doing a thesis comparing wear rates and patterns in low stress sliding abrasion between field conditions and labratory-based tests. The field trial uses a quarry 'pugmill', which is essentially a...

Homework Statement A 2.0 kg iron block is suspended from a spring scale and is submerged in a fluid of unknown density. The spring scale reads 2.55 N. What is the density of the fluid? Homework Equations Buoyant force = mass*gravity Buoyant force = (Density of fluid)*(volume of iron...

an IRON cube with (Length 1.3cm Width 1.3cm Height 0.7cm) so Volume = 1.183cm^3 density of an IRON = 7.8gm/cm^3 so Mass = 9.2274gram Q=mcT c for iron = 0.450 J/(g·K), T difference = 160 degree celsius Q=9.2 . 0.45 . 160 Q=662.4Joule 1Joule = 1 Watt.second so if i need to heat...

Wow it's pretty awesome. It is blazingly fast just like google chrome except you don't have to worry about all the privacy issues and google snooping on you in the background. I definitely recommend a download of this browser. Much faster than firefox so far and it doesn't crash all the time...

I've been researching Lithium Iron Disulfide Batteries, but I've been unable to find the half-equations for the Cathode and Anode. Cathode - Iron Disulfide Anode - Lithium Electrolyte - Organic Solvent Blend (Propylene Carbonite, Dioxolane, Dimethoxyethane) The overall equation is...

Homework Statement Consider a beam of neutrinos moving in the x direction at energy of 200 GeV, and passing through a block of iron. (a) The density of iron is ρ = 7.9gcm−3. In the rest frame of the neutrino, what is the flux of iron nuclei which are moving in its direction (give the...

Hi If we have a Y shape iron and we put a Permanent Magnet N pole at the bottom leg of the Y in such that it will saturate it. would the top ends of the Y also be saturated. what if instead of 2 we have 20 branches where flux can go. what is the saturation will be like at one branch? thx

Iron: Paramagnetic and Last Fusion Product Iron seems to have many mysterious properties: 1. Strongest ferromagnetic rare Earth element. 2. Last stage of fusion in stars to yield positive energy. 3. Heaviest of the ten most abundant elements. I can imagine how 2 and 3 are likely...

I want to buy a soldering station. Fry's has three different Weller stations all for the same price; the WESD51, WD1001, and the WD1002. Can you tell me which one you would prefer and why? http://www.frys.com/product/4865190?site=sr:SEARCH:MAIN_RSLT_PG"...

Does it seem reasonable that a machine which has, up until now, been used for machining steel parts without, apparently, leaving them magnetised could be causing low level magnetisation of the same parts when made of cast iron? There are some DC currents flowing in the machine, apparently but...

Homework Statement It is given that when a copper or aluminium bar is set in oscillation in a magnetic field eddy currents are produced inside the bar. Should it be necessary that the bar should be made of a non-magnetic substance such as copper, aluminium etc.? Can it be a ferromagnetic...

So being curious, I opened up my cheapo radioshack battery powered soldering iron and to my surprise there was basically just a resistor and a contact switch which connected to the batteries and the soldering tip. Does this seem correct or am I mistaken. My purpose for opening it is because...

1% iron solution?? Homework Statement Dissolve 1.70g of iron III chloride in 99 ml of distilled water. Mix well and label 1% iron. Homework Equations I've tried to check the value of the iron percentage but I don't succeed. The Attempt at a Solution First I've tried to find...