The Claisen rearrangement is a powerful carbon–carbon bond-forming chemical reaction discovered by Rainer Ludwig Claisen. The heating of an allyl vinyl ether will initiate a [3,3]-sigmatropic rearrangement to give a γ,δ-unsaturated carbonyl.
Discovered in 1912, the Claisen rearrangement is the first recorded example of a [3,3]-sigmatropic rearrangement. Many reviews have been written.
I am trying to get to grips with rearranging this formula to find c
Vc = Vs ( 1 -e -t/rc )
i can plug the numbers in to a point but im unsure about rearranging to create the new formula
I've gotten to this point:
v^2/2=gs(sin(α)+cos(α)*k)
I'm suppost to get "k" from this equation can some help by showing me the steps because I'm a bit confused on how to do it.
equation is:
k/((j+x)*^(1/2-a))+1=r/(x-1)
Been spending countless hours on trying to figure a way to make x the subject in the equation and haven't got anywhere.
I'm working with hysteresis losses in transformers at the moment, and I was wanting to know if there are units for the coefficient.
Normally, I'd just rearrange the equation for units, below,
h=ηB1.6f
η=hf-1B-1.6
so it would have units
JsT-1.6
However, given the power of 1.6, I'm not sure it...
I tried rearranging the formula multiple times but the answers I got made no sense.
The equation I have to use is a=(v2-v1)/t
I need to solve for v2
v1=1
a=2.27
t=3.88
If you cold help me rearrange the formula correctly that'd be great!
Thanks!
Hello everyone,
Please can someone help me rearrange this equation to make t the subject:
Relevant equations:
My attempt at a solution:
Thank you all for you help
Suppose you have a set of vectors v1 v2 v3, etc.
However large they are, suppose they span some area, which I think is typically represented by
Span {v1, v2, v3}
But I mean, if you're given these vectors, is there anything wrong with rearranging them? Because there's a theorem- that
"an...
Hello there,
I was wondering if someone might be able to help me out with some intermediate steps please. I can't see how
$$f_{tt} =-\int_{r_0}^0 \left(\frac{2Gm_0}{r} - \frac{2Gm_0}{r_0}\right)^{-\frac{1}{2}} dr$$
becomes
$$f_{tt} =-...
Hi,
So i know that the doppler equation is as follos;
F(observed)= (Vsound + Vdetector) / (Vsound +- Vsource) x F(emitted)
Does anyone know how to reaarange the equation to solve for the other variables?
I found two ways to solve this problem, but I get two different solutions, it's confusing because I can't see the flaw in wrong solution.
1. Homework Statement
Long cylindrical inductor of diameter D1 and inductance L1 is connected to battery and creates magnetic field B1. Inductor is then...
Two functions are defined as:
f(x) = 1/(-10x+14)+17
g(x) = 1/(-4x-3)
Find fg(x) and gf(x) and simplify answer into form (ax+b)/(cx+d) where a,b,c and d are numbers to be found.
I know it is common practice to put in some of my own attempts onto here, but I am not even getting remotely close to...
I have determined the solution to a nonlinear first order ordinary differential equation but am struggling to rearrange the result, I have that
$$\\ln(R)+\frac{mR^{n-1}}{n-1}=\bar{w}_{\infty}\xi+C.$$
How would I rearrange this equation for $$R$$?
Homework Statement
Maybe this is not possible because i does not represent anything quantile and is merely abstract? I'm not sure and maybe you guys can help!
Homework Equations
e^{i \pi} + 1 = 0
The Attempt at a Solution
e^{i \pi} + 1 = 0
e^{i \pi} = -1
You cannot...
dHomework Statement A bucket 2.00kg is whirled in a vertical circle of a radius 1.10m. At the lowest point of its motion the tension in the rope supporting the bucket is 25.0 N a) find the speed of the bucket b) how fast must the bucket move at the top of the circle so that the rope does not go...
I'm trying to prove that
$$\dfrac{l}{c+u}+\dfrac{l}{c-u}=\dfrac{2l}{\sqrt{c^2-u^2}}$$My workings so far:
$$\dfrac{l}{c+u}+\dfrac{l}{c-u},$$
put over common denominator,
$$\dfrac{l(c-u)}{(c-u)(c+u)}+\dfrac{l(c+u)}{(c-u)(c+u)},$$
$$\dfrac{l(c-u)+l(c+u)}{(c-u)(c+u)},$$
expand out...
Hi all,
Homework Statement
I'm working on a problem related to an MRI signal equation. Essentially I want to derive an equation that can tell me the point at which f(x) is maximum. I have differentiated with respect to x and double checked that there are no errors.
But now I am stumped at...
How to rearrange this equation?
apparently 1/M (F-μmg)=μmg/g
goes to
μ=F/(M+m)g
but I don't see how please help
i never learned the simple maths and I am paying for it now
Hi all,
I need to rearrange my data. I have an excel file with 12 columns and 2045 rows, which I transformed that into a .mat.
I need to query my data rearranged as follows (cf. example matrix below):
1-sum all values of Col 3 if:
a-they belong to a given value of Col 1 and to a...
Homework Statement
I am trying to rearrange formula to make r^2 the subject.
Homework Equations
0.05=(2.88/4*1*0.018)(0.05^2-r^2)
The Attempt at a Solution
I tried to rearrage as :
0.05^2+0.05/2.88/4*0.018 then sqr root of the answer but I don't think it is correct
Please help
Homework Statement
I'm pretty sure we're meant to solve this using a calculator but I'd like to see if it can be rearranged to make x the subject. I've tried the usual approaches but ended up going in circles. It's part of a bigger problem which required me to find the intersection of...
Homework Statement
i had a solid rectangular beam of max stress equalling 1.65x10^6N/m²
a new beam, a hollow rectangular beam is made to reduce weight, it has the same maximum bending stress 1.65x10^6N/m² but this time has a horizontal dimension of 0.2m and a constant wall thickness of 0.02...
I am currently doing AS level physics at school. However I still can't rearrange formula for questions. I literally have no idea on how to go about doing it.
For example, a simple formula like R=V/I
I tried to rearrange it so I could find I. I tried using an example I found on this...
Ok, this is a separate topic about Microwaves.
I have come across claim that microwaved food is safe for health as long as the food is microwaved on a low power.
This is because microwaves oven that are used on high power can strip ionise a water molecule and rearraange atoms in food...
a) and reduce our risk of / lifestyle / By adopting a healthy lifestyle, / a healthy body / and diet related diseases / we can maintain / developing
b) tissues / to create / and repair / Healthy eating / all necessary nutrients / means / supply / and abundant / of energy
[a]1. How do I make dp the subject?
Q=[(dp/dx)/2k]^(1/n).[pi/(1/n)+3].R^(1/n)+3
^= power of
Please Help
I also have attached the equation.
Thanks
M.Stephens
Homework Statement
Rearrange formula for series and parallel circuit combination.
Make R1 the subject of the formula : Rt = R3 + [ ( 1/R1 + 1/R2 ) ^-1 ]
Homework Equations
Rt = R3 + [ ( 1/R1 + 1/R2 ) ^-1 ]
The Attempt at a Solution
I am unsure as to how to get rid of the...
Homework Statement
Hello.
This is the gist of the question:
I have 0 < k < n and I need a formula to show the number of sets of exactly k integers, each chosen from 1, ... , n.
Homework Equations
n! is the number of distinct ways to rearrange n objects into n slots.
The...
I am having difficulty trying to rearrange this equation to solve for one unknown variable.
i=(io)exp(z*α*F*∆V)/(R*T)
How would I rearrange this equation if i wanted to solve for io, also how would I rearrange this equation to solve for say α.
I've been trying (unsuccessfully!) to rearrange the following equation so that H is the subject:
mgH = [k(H - L)^2] / 2
(Where ^2 means squared.) I also have some test data which shows that if m = 50, g = 9.8, k = 40 and L = 20, H should equal 57.5, or thereabouts
I need to rearrange this formula to make e the subject. Have I done it correctly?
10b + 5be - 3e + 7c
10b + 5be - 3e = 7c
5be - 3e = 7c - 10b
e(5b - 3) = 7c - 10b
e = 7c - 10b / 5b - 3
I have been trying to rearrange this formula to make x the subject:
ax - b = cx + d
My (wrong) attempt at the answer was:
x = cx + d/a - b
I know that that is wrong because x still appears on the right side of the formula. The right answer is:
x = (d+b)/(a-c)
I have no idea how...
Deflection of Beams - Rearrange formula [URGENT]
Homework Statement
Deflection for a simply supported beam... I calculated the deflection of it to be 9.72mm downwards, but there is a support 6mm from the original position and need to calculate the force on the support...
The original...
Homework Statement
I'm doing springs in Engineering, need to find 'n' = Number of coils, only equations I have are..
Compression (let's give it a symbol &)
& = ( 8FC3n ) / Gd
And
K = Gd / 8C3n
Thanks..
Homework Equations
The Attempt at a Solution
Hey, new member here. Been viewing this forums for a long time now and used this forum as a resource for help with homework.
Anyways, wasn't sure where to put this problem. I am having trouble setting up the problem.
How many ways can we rearrange the letters in DISCRETE so that the E’s...
Can't Rearrange this equation!??
Homework Statement
I need to substitute one equation into another and rearrange for one term. I can't get the right answer!
Homework Equations
I've had to attach the equations as pictures I am afraid, here they are.
The equation to be...
Hi Helpers:blushing:, the following is my problem:
I have to rearrange Equation(1) to make Equation(2) using trigonometric identities
(1): E(θ)=2Eo + (ΔR)^2 (c(x)cos^2(θ-θo) + c(y)sin^2(θ-θo))
(2): E(θ)=2Eo + ½(ΔR)^2 ((c(x)-c(y))cos(2(θ-θo)) + (c(x) + c(y))
I was able to get...
Hey,
I've spent ageees trying this . . .
Re-arrange to find A:
(A + Bh) / (2B + A/h) = X
* / indicates division
I would post my attempts although it would take me a while to do s and it probably wouldn't give anyone any insight.
I'd much appreciate it if someone could...
Hi, I know the kinetic energy equation is
Kinetic Energy(J) = 0.5 x Mass (Kg) x velocity² (m/s)
So how do I rearrange it. I've been having problems with it
I have a question here
What is the weight of an object traveling at 2m/s with 2J of kinetic energy?
the answer is 10N, but...
I have a real big problem. My physics teacher has given an extra-credit assignment to my class to figure out. He said we can use whatever we want to figure it out. The problem was to rearrange the Projectile Motion equation (d = Vit + 1/2at2) to solve for t.
So I started out by asking my Math...
How do I rearrange this where do I begin?
y= -2sin [ 2\pi * \frac {(t+1)} {3} ]
I need to state the period, amplitude, max/min, range, domain, horizontal phase shift, and vertical displacement
Im not sure how to rearrange the square brackets.
have been trying this for 8 hours. have finally come up with q = Fe X r squared, divided by Ke.
In the problem I have been told the value for:
Fe = 5.5 x 10-9, r = 5.0 x 10 -10 and of course Ke (8.99 x 10 9)
known nucleus charge is e= 1.6 x 10-19.
I have been asked whether the magnitude of...