Reaction Definition and 1000 Threads

This is the given reaction:https://www.physicsforums.com/attachments/1559750554233-png.244625/ Where will the reaction take place - at ketone or at alkene? And why?

Video Link According to the video in the link above the binding energy for deuterium is about 2 MeV and the binding energy for tritium is about 8 MeV so the total for the input items is 10 MeV the binding energy for helium is 28 MeV I am confused by this part if the resulting binding energy is...

I believe It's fission, but am Unsure. As for X I will try solve later.

https://postimg.cc/JtP2h113 I think I may have forgotten some more basic elements of tension and normal reactions. I do not understand why the vertical component of the normal reaction =Tsin60-15g Because Tsin60-15g is negative when resolving upwards, i would have thought this meant that the...

I have tried using the formula $$Δm=[Zmp+(A−Z)mn−M]$$ But either I plug the wrong thing into the wrong part or it just isn't working. Essentially I want to know the method I need to use. I will then try to solve it and hopefully get it correct. Thanks

Summary: I came across a question in my chemistry homework where i am supposed to write the balanced equation between ammonia and benzoic acid. I am not really good with chemistry but it's my last exam of chemistry ever in my high school experience, so i need to (and want to) get a good grade...

Hey Guys, exercise: "It is desired to study the first excited state of 16O which is at energy of 6.049 MeV. Using the (alpha, n) reaction on target of 13C, what is the minimum energy of incident alphas which will populate the excited state? So, i suggest to define first the reaction equation...

Hi all - I have a question on the redox reactions in Li ion batteries. I'm not being able to figure out where the Li-> Li+ + e- half cell reaction is actualy happening. Take the standard LCO reaction: LiCoO2 + C6 -> LiC6 + CoO2 (in reality, only 50% of the Li reacts this way, but let's ignore...

Hi everyone, in school we recently learned about the Lorentz Force, which says that when charged particles move through an electric field (perpendicular to the field lines), a force is excerted on them (called the Lorentz Force), which goes perpendicular to both the magnetic field lines and the...

Homework Statement A -> Products The two half-lives are 34 minutes and 68 minutes respectively. Find the order of the reaction. So I and my friends are having disagreements over whether this is first order or second order or not. Homework Equations For first order half-life, t = 0.693/k For...

Hi, Can someone suggest me an open source code for simulation of (a,n) reactions? I want to build a geometry(sphere) with an a-decay radioisotope covered by Beryllium and count the neutron production. Thanks a lot

1. The illustrated structure is affected by a known couple, and try to figure out the restraining reaction force of the hinge A and hinge E. We should analyse ECD instead. Since arm CD is a two force members, so N(C) in in the direction where CD connects by these two points. The distance from...

A microwave transmitter, bouncing the microwaves off a parabolic dish, should have a small amount of acceleration due to the reaction of the microwaves against the dish. Would an arrangement of two dipole antennas, 1/4 wave apart and phase shifted by 90 deg., creating a cardioid pattern...

Homework Statement Solid sodium bicarbonate decompose when it's heated above 50 celsius. However, when it is dissolved in water interactions of components changes. So what happens when sodium hydrogen carbonate solution is heated? Does it release carbon dioxide when temperature is above 50...

The question arises in which procedure to follow, a balance by element or by compound? The excersise is this: A mineral of a process contains contains 90% FeS2 and 10% inerts by weight. This materialit is calcined with 25% excess air, according to the reaction: FeS2 + 02 ► Fe203 + S02 The...

Homework Statement Hi all, I am having issues with the following problem. Assistance is greatly appreciated! Homework EquationsThe Attempt at a Solution a) The "law of mass action" I know of is just the equilibrium constant, which I wrote in terms of partial pressures at equiilbrium $$K =...

For a reaction defined as such, $$A\rightleftharpoons B$$ the equilibrium constant ##K## is defined by ##K = p_B / p_A##, with ##p## denoting the partial pressure (edit: at equilibrium). However, if ##K<<1##, which implies ##p_A >> p_B##, it is said that the backwards reaction dominates and that...

Hi everyone, I'm new here so I hope I'm posting this in the right place. I'm struggling to duplicate the horizontal reaction forces being generated in an L shaped beam. Typically I like to do hand calculations and verify my answer using Solidworks, but in this case I can't seem to wrap my head...

Hello new to the forum. I'm a builder by trade and enjoy studying the concepts behind the things I build. My problem is: A typical concrete post and base panel with a wooden fence. Unit mass approximately 350kgs including the foundation concrete around the posts. 2.0m wide x 2.0m above...

Homework Statement Homework Equations Using dimensional plane in the vertical y and horizontal x. ##\Sigma##Fx = 0 ##\Sigma##Fy = 0 ##\Sigma##Mz = 0 The Attempt at a Solution I have detached the 2 members at B and analyze them both separately. The 14 kip force is throwing me off though...

Homework Statement For the reaction below, the constant pressure heat of reaction is qp = −3256 kJ mol−1 at 25 °C. What is the constant volume heat of reaction, qV , at 25 °C? 16 CO(g) + 33 H2(g) ⟶ C16H34(l) + 16 H2O(l) Enter your answer in kJ mol−1, rounded to the nearest kilojoule...

I’m a high school student, I generally get problem in chemical reactions. I understand all physical and chemical properties of a compound, for example carboxylic acid have all the acidic property and aldehydes are highly polar. But the problem comes in chemical reactions like shift of positive...

##dU = dw + dq ## vs ##dU = dw + dq + µdN## Which equation do we apply to a closed system involving chemical reaction? According to textbooks, the first equation holds for any closed system in the absence of fields and kinetic energy. However, later chapters use the second equation for...

Homework Statement Homework EquationsThe Attempt at a Solution I need to know the time it takes for the [H+] concentration to be 0.15mol/L. However, the graph gives me the [I2] concentration over time, and I don't know how to convert it to the [H+] concentration. How should I solve the...

Homework Statement I'm trying to figure out the reaction at D,that's where the system can rotate. Problem: A force P of magnitude 90 N is applied to member ACDE, which is supported by a frictionless pin at D and by the cable ABE. Since the cable passes over a small pulley at B, the tension...

Hello, it has been quite some time since my statics class, and I am having a problem determining the reaction forces and moments in a rigid body. I have included a sketch of my problem, and I am hoping someone can help guide me to a solution. I apologize if the sketch is a bit crude.I have a...

Hi. Basically, the title. I've been thinking about combining phenolphthalein and bromothymol for this purpose. Will this work? Thoughts?

Homework Statement A rope of length L and mass m is attached to the ceiling and folded at mid length. The free end of the rope is held against the ceiling, then dropped at time t=0. a) Calculate the velocity of the free end as a function of y, its distance from the ceiling. b) Calculate R...

1. Homework Statement The chemical reaction is given: 2C2H2 + 5O2 -> 4CO2 + 2 H2O. ΔrH* = -1299 kJ / mol. How much heat is released when 50 grams of C2H2 is burned? Homework EquationsThe Attempt at a Solution First, I convert mass into moles. M(C2H2) = 2*12+2 = 26 g/mol n(C2H2) = m/M = 50 g...

Given a large enough energy source (nuclear?)... can I build a rocket that creates its own reaction mass via electron-positron pair production, and then derive thrust by accelerating the charged particles out the back with a magnetic nozzle?

Homework Statement Which one of the following products will not be obtained in the given Wurtz reaction? The Attempt at a Solution Well, (a) will definitely be the major product. We know that this reaction may proceed by a free radical or an ionic mechanism. But what's that got to do with the...

Homework Statement Which one is more reactive, CO2 or NO2? Homework Equations The Attempt at a Solution I drew the Lewis structures of these species and found there is one delocalized electron in NO2, so I think NO2 is more reactive. Am I correct?

Hi, Im trying to find the method for working out the support reaction loads on a beam at given angle. example: a 6m beam with a point load 600kg or UDl of 100kg/m perpendicular to the beam. Suspended at each end by a chain hoist, "a" and "b". "b" is 2m higher than "a". I believe using angle is...

Please let me know if the following reaction is possible for high energy electrons colliding with neutrons or neutron-rich nuclei: n+e^{-}\to \Delta^{-}+\nu_e.\tag{1} If it is forbidden for some conservation law or for some other reason, please give me an explanation why. This reaction is...

Homework Statement The addition of hydrochloric acid to a silver nitrate solution precipitates silver chloride according to the reaction: AgNO3(aq)+HCl(aq)→AgCl(s)+HNO3(aq) When 500 mL of 0.100 MAgNO3 is combined with 500 mL of HCl in a coffee-cup calorimeter, the temperature changes from...

Homework Statement Fission, the process that supplies energy in nuclear power plants, occurs when a heavy nucleus is split into two medium-sized nuclei. One such reaction occurs when a neutron colliding with a 235U (uranium) nucleus splits that nucleus into a 141Ba (barium) nucleus and a 92Kr...

Hi, I've been wondering about this a lot and I didn't find a satisfactory answer by myself. My professor said that in order to promote a fission reaction you need to provide a certain amount of energy (like in a chemical reaction you need to overcome the activation energy) and the easiest way...

Homework Statement A motorist is traveling at 10m/s in a car whose maximum deceleration rate is 5.0 m/s^2 The effective reaction time between seeing a hazard and starting to brake is 0.5s Calculate the thinking distance for the drover ar this speed (ie the distance traveled during his...

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...

<< Thread moved from the technical forums, so no Homework Help Template is shown >> I have mind boggling problem, trying to distinguish between Dynamic reaction versus Coriolis acceleration of thin hoop. Problem: A thin, hoop of mass m and radius r spins at the constant rate ω 1 about an axle...

Homework Statement What is the product of acetlyene and HOCl reaction? I gathered that Cl acts as electrophile and so (HCOH)=CHCl is formed. Now two things can happen, it could tautomerize to keto form since enol form is unstable, or another molecule of HOCl can add itself, if it adds again...

I'm confused in the balancing of a reactor , let's say the inlet volumetric flow rate is ##v_○## and outlet volumetric flow rate is ##v_1## Doubts: 1) How is the volumetric flow rate and volume of the reactor ##V## are related to each other ? 2) If the volumetric flow rate is constant (...

I am not talking about the reactions of simple atoms in chemistry, I am speaking, for example deuterium, heavy water, isotopes of hydrogen, oxygen, carbon, etc.I would like to know how to calculate when two atoms merge, to know mathematically what atom will form, example deuterium + deuterium =...

The DTT project proposal talks about a D-D reaction inside the future tokamak that is going to be built in Italy, Frascati. Which is the reason of this choise? The cross section is smaller than the D-T reaction one, and neutrons are less energetic. How this influences heat and particle exhaust...

Homework Statement To stop a car, first you require a certain reaction time to begin braking; then the car slows down under constant breaking decelaration. Suppose that the total distance moved by the car during these two phases is 56.7 m when its initial speed was 80.5 km/h and 24.4 m when its...

How do i suppose to determine the uncertainty for the slope of my Static friction against normal reaction graph? My data for static friction and normal force has the uncertainty of +/- 0.0001 The uncertainty is too small for me to draw airbox/bar in the graph to draw the max and min slope...

Hi, I have been searching d-d reaction cross-section at higher energies up to 10 MeV. I checked ENDF database, however, I could not find any data. Do anyone offer a source from which I can get d-d cross-section data? thanks in advance.

Homework Statement Suppose there is a chemical reaction : N2 + 3H2 = 2NH3 The following things are written in my book : rate of disappearance of H2 = - Δ / Δt rate of reaction wrt H2 = - 1/3 * Δ / Δt My question is that why can't we write rate of reaction = rate of disappearance of H2 ? In...

Homework Statement My question is not a homework problem. I am having difficulty in understanding the concept oof contact forces. Homework Equations What I don't understand is that when two bodies A and B are in contact and left on a frictionless surface, they apply normal reactions on each...

Homework Statement Calculate E cell for the following reaction at 25deg celcius 3 CU(s) + 2 MnO4-(aq) + 8 H+(aq) →2 MnO2(s) + 3 CU^2+(aq) + 4 H2O(l) Given: [CU^2+] = 0.010M, [MnO4-] = 2.0M, [H+] = 1.0M I’ve posted a picture of my work, if someone could just let me know if I answered the...