Iron Definition and 497 Threads

I have a problem I can't seem to solve. here it is and here is what I have gotten. Iron metal is produced in a blast furnace through a complex series of reactions the involve reduction of iron(III) oxide with carbon monoxide a. Write a balanced overall equation for the process, including the...

Any have good results by mixing iron powder and epoxy, purpose is to create an armature for a generator.

I searched different places but couldn't find how actually you calculate this:- What is the magnitude of force experienced by a cylindrical piece of iron placed near the end of a solenoid with internal field strength B0.

Is the reason why the energy liberating fustion process ends with uranium(more precisely Iron) is that uranium's bindind energy per nucleon begins to decrease and hence will absorb energy rather than emit it, and thus is not self sustaining? Thanks in Advance

Homework Statement A piece of iron weighing 85.65 grams was burned in air. The mass of the iron oxide produced was 118.37g. 1. Use the law of conservation of mass to calculuate the mass of oxygen that reacted with iron. 2. use the molar mass of oxygen to calculate the number of moles...

Homework Statement Calculate the maximum mass of aluminum that can be made from 408 tonnes of alumina, assuming that aluminum is produced by electrolysis. Homework Equations At the cathode: Al^{3+} (l) + 3e^{-} \Rightarrow Al (l). At the anode: O^{2-} (l) \Rightarrow O_2 (g) + 4e^{-}. Is...

Homework Statement An iron nucleus has a radius of 5.4x10^-15 and a mass of 9.3x10^-26 what is its mass per unit volume in kg/m^3 Homework Equations Area of a sphere = 4/3(pi)r^3 Density= M/V The Attempt at a Solution i basically plugged everything into the equations so...

Is iron electric conductor also when it's molten?

Hello, I'm new to the forum and joined because I have a question regarding Iron Properties. I'm interested mainly to understand the Earth's Magnetic field better. So here's my question. Is there some sort of chart plotting Iron State (Gas, Liquid, Soild) in a Temperature vs. Pressure...

This is a quick question. Is it correct to say that the change in color of iron to a reddish-brown color when the iron rusts is a physical change?

Homework Statement Al(s) + Fe3 O4 = Fe (s) + Al2 O3(s) calculate how many grams of iron can be produced when 14.0g of Al are combined with excess FeO4. Homework Equations The Attempt at a Solution I know that I need to balance the solution which is: 8Al(s) + 3Fe3 O4 = 9Fe (s)...

Lets say I take the North pole of a magnet and place it 1 inch from a mass of iron with the same density and shape of the magnet, and somehow measure the force of attraction, I'll label that value "i". And then I take that same magnet and place it the same distance from another identical magnet...

The iron law of oligarchy is a political theory, first developed by the German syndicalist sociologist Robert Michels in his 1911 book, Political Parties. It states that all forms of organization, regardless of how democratic or autocratic they may be at the start, will eventually and inevitably...

What is the reading on the scale for the first one?? My friend mentioned that upthrust need not be considered as its an 'internal force', i wonder why?? Shouldnt' the net force dowards be (Weight of stone - pVg) + (Weight of water + pVg) as the water experiences an equal an opposite downthrust...

If our sun will took around 15 billion years to convert hydrogen (Atomic#1) in helium (Atomic#2) how much time it took, since big bang, to generate heavy atoms like all we have on Earth as iron, uranium, plutonium and etc ?

My employer operates a biological water filtration plant. The first stage of filtration has the raw water passing through a filter embedded with bacteria, the processes used here is aerated biological treatment where oxidizing processes (bio-oxidation) are used and the microbes gain energy when...

If the proton does not decay, will black dwarfs become iron stars in 10^1500 years>

Hi, I'm new to the forum so i don't really quite know what I'm doing yet! anyway, i know this question is REALLY basic but physics is not my forte and I'm confused... "John has just bought a new iron and sees this plate on the handle - 230V 1840W 50Hz" John irons a shirt for 10s...

An iron block of the mass 1 kg is suspended on a spring of the spring constant 130 N/m , and merged into a vessel with 10 liters of water. The mass is displaced by 10 cm from its equilibrium position, and released. a. What is the mass of water in the container in kg? I think iron density...

I have checked Wikipedia and the National Nuclear Data Center and it looks like Iron (Fe) has 28 isotopes. There are 6 additional isotopes that come under the main ones (such as 52mFe under 52Fe) making the total of 34. My question is if there is any possibility that someday more Iron isotopes...

Doesn't milk block the absorption of iron? :confused:

If a 2.893 g sample of an unknown containing iron requires 28.45 mL of the permanganate solution described in Pre-Laboratory question 3 to reach the endpoint what is the % Fe in the unknown?

I know from reading that when the core from a massive star is transformed into iron through the process of nuclear fusion that the star collapses because the newly formed iron core does not put out any energy to support the weight of the star. My question is, why is iron like this when it is...

You're in a room with 2 iron bars. One is a magnet and the other is not. How do you tell which one is the magnet? You have nothing but the iron bars to test this.

Homework Statement A physics student has two cubes of iron. One cube has three times the volume of the other. The cubes are heated over identical flames for the same amount of time. The cubes are then removed and the temperature of each cube is recorded immediately. How will the thermometer...

ur in a room with 2 iron bars one is a magnet and the other is not , they are the same shape and size , how do u tell which one is the magnet and all u have is the 2 bars to test this nothing else in the room.

I posted this in general math, but then I saw that calculus and analysis was a more appropriate place for it. I am looking for a solution to this problem: When a magnet is dropped from rest near an iron wall, it accelerates downward due to gravity at constant acceleration. It also...

When a magnet is dropped from rest near an iron wall, it accelerates downward due to gravity at constant acceleration. It also accelerates toward the wall, and the closer it gets to the wall, the greater the acceleration. Can anyone refer me to a solution that would give the position of the...

Homework Statement A hanging wire made of an alloy of iron with diameter 0.09 cm is initially 2.2 m long. When a 66 kg mass is hung from it, the wire stretches an amount 1.12 cm. A mole of iron has a mass of 56 grams, and its density is 7.87 g/cm3. Based on these experimental measurements...

How do u calculate the atomic spacing on an iron cube? Can someone please help me!

the moving iron voltmeter has resistance of 5k ohm at 15c when it reads correcectly when connected to a supply of 200V. and the copper coil's temperature coefficient at 15c is 0.004ohm/c. so what's the percentage error in the reading when it's 50c?

I for inquisitional purposes only recently attempted electrolysis of Iron to create Iron oxide. I used a car battery charger (12v, 2.7A) and two large (assumed iron) nails; a de-ionized water solution (200ml) with approx. 15g sea salt (claimed 99.995%). After starting the reaction (outside with...

Why the base of an electric iron is made thick and heavy?

Good Evening, all... Trying to find a metal for casting that has a density slightly lighter than iron (.28 lbs per cubic inch). I'm looking for a material that is as strong as cast iron, but, reduces the weight of the cast item by 10%. Secondly, the cost and availability should be...

Hello, I was wondering if we can deoxidize Iron inside a crystal like Kyanite (Natural form), which contains Fe inclusions (sometimes rusty)... Thanks in advance.

Hi Community! I have to study the valence bad of Iron. Could anyone suggest me some articles where spin-resolved photoemission and inverse photoemission experiments are presented? Obviously textbooks are welcome too :smile: Thanks!

Thank you in advance. Homework Statement Nitrogen gas can be obtained from the reaction between sodium azide and iron oxide. 6NaN_3_{(s)}+Fe_2O_3_{(s)} \rightarrow 3Na_2O_{(s)}+2Fe_{(s)}+9N_2_{(g)} a) What is the yield of this reaction, knowing that, from 390 g of azide and 400 g of...

Homework Statement 4Fe+3O2=2Fe2O3 deltaH=-1.65 x 10^3kJ If there are 15.7 grams of iron and 7.99 grams of oxygen, how much heat will be produced? Homework Equations Since Iron is the limiting reagent do I use that to determine the heat released? The Attempt at a...

Hello everyone, My questions and link to my webpage is posted over at the original science forums. Please take a look: http://www.scienceforums.net/forum/showthread.php?t=36161 Cheers, Michael

How much pressure is needed to compress the volume of an iron block by 0.16 \%? Express your answer in {\rm{N/m}}^2. I know pressure is the same as stress, and that stress is force/csa. Could someone point me in the right direction.

Hi, My friend and I were having a discussion and had a disagreement. I'm hoping one of you intelligent people can settle it for us. There are two points I'd like to talk about. 1. Safety concerns and practicalities aside why would one choose to heat a room with a baseboard heater versus an...

I am not a student and this is not homework. I am just a thinking individual who would like to know the following: Weight is a product of mass and gravitational force. If the mass of two objects like a ball of cotton and a ball of iron is the same (1 kg) and the gravity is the same because both...

Hello:cool:o! I wanted to know that why do we use a soft iron core in an inductor?

I'm curious as to why there aren't heavier metals in the Earth's core than iron and nickel. Why those two? Anyone have any insight?

Homework Statement What is the volume of one mol of iron where iron is 55.8 g/mol and the density of iron is 7.86 x 10^3 kg/m^3 ? Homework Equations p = m/v The Attempt at a Solution I can get the numerical answer (checked back of book), but I'm not sure how my units worked...

I just need to refresh my memory: When writing electron configurations for elements in the d block such as Iron (Fe), would you write it like this: 1s2 2s2 2p6 3s2 3p6 4s2 4d6 OR like this: 1s2 2s2 2p6 3s2 3p6 4s2 4p6 4d6

So recently I was thinking about the movie Iron Man and I know its just a movie, but any ideas on how his suit flies? I know this sounds a little far fetched but I was just curious.

Homework Statement How much heat is needed to melt 16.7 kg of iron that is initially at 21.3°C? Homework Equations Q=m*c*ΔT + mL The Attempt at a Solution here: m=16.7kg, c=0.45kJ/kg*K, and ΔT=1538-21.3=1516.7 Thus, Q1=1.14e7 J Then, I need to calculate latent heat needed, which...

Any one know? I think becayse when you rub the magnet over the metal it causes something to align up, aligning up the poles? Ah i duno

Homework Statement Given an iron bar, of round cross-section, fixed by its extremities (bar measures 152 mm in length and 4.8 mm in diameter), a weight of 88.5 kgs is hung from its middle, bending it at least 90 degrees. How much weight/force would be needed to bend another bar of...