Magnesium Definition and 85 Threads

I've just seen a video made by Dr. Usha Singh associate physics professor. It showed a practical experiment giving results that the changing field is directly proportional to the inverse square law. It involves two bar magnets. I do however have some conflicting information. When analysing...

With distance from the source the feild strength is reduced. Do the electrons travel slower the further from the source ? And thus faster closer to the source. Or is the feild strength reduced simply because there are less electrons but the speed of them is the same as inner feild. I'm asking...

How to calculate the kinetic energy of an object propelled by a magnetic field. For example I have 2 magnets face to face in opposition. Each magnet is a N42 Neodymium cube dimensions 10, 10, 10 mm they are in free space with no interference. The maximum pull strength is 4.7 kg. If I were to...

I saw this video on YouTube, () which shows a person making potassium with the following reaction K2CO3 + Mg = K + C + MgO I just don’t understand how Mg can displace K I googled the reaction but couldn’t find much info on this reaction. Could someone give the name to this, or explain the...

I have recently learned that taking vitamin D supplements can cause a dip in magnesium, because Mg is used as a cofactor to process the vitamin. Does this apply to a sudden lifestyle change from very little exposure to lots of exposure to sunlight? (I am asking this as a purely theoretical...

Hello, I have a question or two that I need help with: What happens when you put magnesium bisglycinate and citric acid into water solution? Does magnesium change form here? Kind regards, IN

Suppose there's some slow burning pyrotechnic mixture like KNO##_3## with powdered charcoal, and several really thin threads/wires of magnesium metal (or zirconium or magnesium/aluminum alloy) are made go through a pile of that mixture. Now I would guess that because a mixture of finely powdered...

I'm wondering if there is any way to compress anhydrous magnesium sulfate into a tablet to slaw a chemical reaction in water.

I am trying to find out the heat of combustion of one kilogram of carbon dioxide with magnesium. I am looking for results for stochiometric conditions of these two reactants. I have found the following equation online 2 Mg(s) + CO2 ---> 2 MgO(s) + C(s) yields a standard enthalpy of --810.1...

In first attempt i flashed the solution with the hot HCl vapours and then fractionation was done to remove the TMB(tri methyl benzene) + THF the bottom was MgCl2 and some of the TMB +THF then i washed the solution with 30% HCl + acidic water,since Magnesium chloride is highly soluble in water at...

I am evaluating the possibility what magnesium may be the most-easily obtainable structural material on Moon. The following ISRU sequence is proposed: 1) Regolith melt electrolysis produce ingots made of ferro-silicon, as by-product of breathable oxygen production 2) Ferro-silicon ingots are...

In attempting to make magnetized neodymium powder, I grinded neodymium magnets into a powderusing a belt sander. However, I found that the magnetic properties of the neodymium had decreased substantially. It would appear that any attempt to grind the magnets into a powder using this method seems...

Hello! today I have a question regarding the most efficient way to generate electricity by moving a magnet across a coil. The theoretical magnet would be moving in a circular motion fixed to the outer circumference of a driver wheel like in many simple generators, how does the physical torque...

I want also to build electrolysis based hydrogen generator or and water oxygenator/aerator. It's simple electrolysis device but requires special electrodes that are corrosion resistant or at least safe for human consumption. I seen that hydrogen bottles use platinum titanium electrodes. Platinum...

Homework Statement If you had a solution of Magnesium carbonate, what results would you expect from the following four tests: Precipitation Test, Flame Test, Benedicts Reagents Test, Dilute Acid Test. Could someone take a look at my reasoning to how the Magnesium Carbonate would react under...

Trying to create an experiment that utilizes a motor driven shaft to measure the angular velocity of another shaft via eddy currents. We made a mock experiment that uses 8mm shafts, pillow bearings, and ceramic magnets from home depot, but don't see a torque on a non-ferrous metal attached to a...

Homework Statement Calculate the net charge on a magnesium ion which has lost two electrons. 2. The attempt at a solution I put 2+ as my answer and this is what I was told, but I don't understand what they mean by the following; That's a chemist's shorthand, not the amount of charge on the...

Homework Statement In the picture 20.40, what is the direction of the current induced in the resistor at the instant the switch is closed.[/B]Homework Equations Right hand rules- Point thumb in direction of current and your fingers will curl in direction of magnetic field. Lenz's law. The...

So in my experiment we combusted Magnesium ribbon to form Magnesium oxide. These were the reactions: Mg(s) + N2(g) + O2(g) → MgO(s) + Mg3N2(s) MgO(s) + Mg3N2(s) + H2O(l) → MgO(s) + Mg(OH)2(s) + NH3(g) MgO(s) + Mg(OH)2(s) → MgxOy(s) + H2O(g)...

Hi guys, I am trying to produce a desktop feature for a client which consists of a 3d printed cube with a metal ball at its center. I can suspend the ball in the center of the cube using a support or piece of rod, but I would really like to try and make it levitate using an electromagnet. I...

I've read that magnesium traditionally has a bright white flame. When I performed a flame test on magnesium carbonate in lab, there was no color change to the flame. Why is this?

I was reading through the standard complexiometric method of determining hardness in water, and the procedure mentioned the use of the magnesium salt of EDTA. I looked up online to purchase this reagent but all I could find was disodium magnesium salt of EDTA. Are they one and the same? Thanks!

I just conducted a lab in which I am testing varying amounts of magnesium to react with a consistent amount of hydrochloric acid, determining which amount of magnesium produces a reaction whose enthalpy is the closest to the theoretical/ideal enthalpy of this equation. I created 3 conditions...

I have a bottle with some vitamin capsules that got mixed up with other vitamins and I can't remember what it is but I'm almost sure it's magnesium. Is there a test I can do like drop the powder of the capsule into some kind of liquid and I would be able to tell if it's magnesium?

I would like to make a solution of magnesium sulfate (MgSO4) that is 15% magnesium sulfate by mass in water. As magnesium sulfate is sold as epsom salts which is MgSO4 7H2O I need a way to calculated the epsom salts required for the required magnesium sulfate or 1.24 pounds per gallon of water...

How will increasing the molar of HCl and dissolving magnesium in it, relate to particle theory

Homework Statement two proton beams going in same direction repel each other whereas two wires carrying currents in same direction attract each other Homework EquationsThe Attempt at a Solution two proton going in same direction then it makes two current going in same direction. And current...

1. In my Homework, the teacher gave me the project to collect the sample of corroded magnesium (pure metal, and not an alloy) and write a detailed description about the process related to it. 2. Although I collected the corroded sample, yet I am unable to write its description. What I know...

Homework Statement A zeeman experience is made in the transition 3s4s ## ^3S_1## -> 3s3p ##^3P_2## in Magnesium with a magnetic field of 2Teslas (20 000 Gauss). With no magnetic field the emission occurs in 518.360nm. a) Draw the spectrum of what you hoped you observe when you're watching the...

Hello my name is Mike Moore and I work for Copperhead Industries, LLC We are a tracer wire manufacture for the underground non-metallic pipe utility sector, natural gas, water, sewer and telecom. We use magnesium anodes for grounding out the far end of the tracer wire system which completes...

Mg(s) + 2HCl (aq) --> H2(g) + MgCl2(aq) + heatMg (s) + H2SO4(aq) --> H2 (g) + MgSO4 (aq) + heatMg(s) + 2C2H4O2(aq) --> H2 (g) + Mg(C2H3O2)2 (aq) + heat Which reaction will produce the great molar enthalpy and which the least? Why?

As you may know , some pencil sharpeners are made from magnesium(the case).Now what I want to know is are they all made from magnesium? Near my house there are only these ones for sale.I got one and tested it with some vinegar.What hapened is that layer of it started peeling off.After the...

I am trying to locate HK31A (magnesium thorium alloy) for a research project. I have tried my usual suppliers but they came up empty handed. Calls were then placed to the major magnesium alloy manufacturers (e.g. Magnesium Elektron) but to no avail. Upon further investigation the manufacturers...

Hi Everyone, i was wondering about how graphite flakes formed in Grey cast iron, and how Nodular or Spheroidal graphite formed in Ductile iron, and also how magnesium enhanced the spheroidal formation of graphite in Ductile iron, please elaborate your explanation (you may answer it in terms of...

Hello This is more of a chemistry question but I would like to know how a piece of magnesium will react with concentrained and delute saltwater, and what will be the products in each case? Please help, I cannot find any complete info on the web

I am confused as to why this happens when magnesium is introduced into a hydrochloric acid solution: $$2HCl_(aq) + Mg(s) \rightarrow H_2(g) + MgCl_2(aq)$$ I understand that the magnesium will form an ionic bond with chlorine and then quickly dissolve. However, I don't understand why the hydrogen...

Is there any method to extract food grade magnesium chloride from industrial magnesium chloride?

I was thinking of plating iron or magnesium on to copper with a galvanic cell. Would this work? 3Cu(s) + 2Fe2+(aq) --> 3Cu2+(aq) + 2Fe(s) Cu(s) + Mg2+(aq) --> Cu2+(aq) + Mg(s) In the cathode, when the Cu turns into Cu2+ and makes Cu(OH)2, of what use is it? And in the anode, when the O2-...

Picture to show more clearly: http://i.imgur.com/JmARtQM.png 1. Homework Statement What is the molar enthalpy of combustion ΔH(c) of magnesium? Mg(s) + 2HC(aq) → H2(g) + MgCl2(aq) MgO(s) + 2HCl(aq) → H2O(l) + MgCl2(aq) m(Mg) = 0.5 g m(MgO) = 1.0 g V(HCl) = 100.0 mL C(HCl) = 1.0 mol/L...

Recently I've been looking for foods rich in magnesium to experiment with personal nutrition. Although I had found several sources that sited the rich magnesium content of black beans, when I found several brands of the beans at the store, I noticed none of the nutritional labels mentioned...

The NMDA receptor is a ligand gated non selective cation channel. It allows Na+ and to a lesser extent Ca2+ and K+ to pass through. I read that Mg2+ clogs up the pore. Why would Mg2+ block the channel but not Ca2+? Ca2+ is larger so I'd expect that to be more likely to block an ion channel. Is...

Homework Statement Hi,there is a question from my textbook: Name FOUR substances commonly found in the laboratory to prepare magnesium sulphate by reacting with dilute sulphuric acid. Homework Equations The Attempt at a Solution Here is my answer: Mg(OH)2,MgO,MgCO3,Mg(HCO3)2...

Homework Statement Calculate the Fermi energy for magnesium, assuming two free electrons per atom. Homework Equations {E_F} = \frac{{{\hbar ^2}}}{{2m}}{(3{\pi ^2}\rho )^{2/3}}, where \rho = q\frac{N}{V} and q is the number of free electrons. The Attempt at a Solution q = 2, so...

Homework Statement I need to work out what is happening with the above reaction. Why is my data showing a very slow hydrogen gas production rate (if it even is hydrogen gas), in fact, even slower than the production of hydrogen gas from the reaction of magnesium and ethanoic acid. All acids...

Homework Statement I have to design a lab which will determine nitric, hydrochloric and sulfuric acid from containers A, B and C - i.e. It is unknown which acid is held in which container. This has to be done by reacting the unknown acids with magnesium Homework Equations Mg + 2H(+) →...

Hi all, So a little background. I am currently trying to characterize corrosion rates of AZ31B Magnesium [Mg-3%Al-1%Zn] which would be used as an implant within the coronary artery. Currently I'm running a static test of the magnesium in 0.9% NaCl(saline) in an incubator @37C. Im...

Today in class my chem teacher was insistent that 2Mg + O2 = 2MgO was a synthesis reaction. this I agree with. however, he was also adamant that this was not a combustion reaction, when it our textbook it specifically gave us this very same example as a type of combustion reaction. Question: is...

Homework Statement In this calorimetry experiment, O.5 grams of magnesium is dissolved in 100.0 ml (100.0g) of diluted HCL (0.1mol/L) at an initial temperature of 29.50 C. The final temperature is 46.18 C. Q: Calculate the enthalpy change per mole of magnesium. Homework Equations...

Any help on this quistion would be greatly appreciated. I have no idea ho to answere it, and can't find anything in my nothes or books anywhere. The temperature-dependent molar specific heat capacity at constant pressure of many substances is given by: c =a+2bT−cT^−2 For magnesium, the...

Any help on this quistion would be greatly appreciated. I have no idea ho to answere it, and can't find anything in my nothes or books anywhere. The temperature-dependent molar specific heat capacity at constant pressure of many substances is given by: c =a+2bT−cT^−2 For magnesium, the...