Topic :: Chemistry
QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.6 : In N + 1 Rule in Quantum Chemistry, whenever a spin 1 / 2 nucleus is adjacent to N other nuclei, it is split into N + 1 distinct peaks. In 1 peak or singlet, there is only 1 magnitude. In 2 peaks or doublet, the ratio of magnitude of each peak is 1 : 1. In 3 peaks or triplet, the ratio of magnitude of each peak is 1 : 2 : 1. In 4 peaks or quartet, the ratio of magnitude of each peak is 1 : 3 : 3 : 1. In 5 peaks or quintet, the ratio of magnitude of each peak is 1 : 4 : 6 : 4 : 1. (a) By using binomial coefficients or Triangle of Pascal find the ratio of magnitude of each peak if 6 peaks exists. (b) How many adjacent nuclei are available in a spin 1 / 2 nucleus in such situation of 6 peaks?
1 1477QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.7 : (a) The correct statement about both the average value of position ( ) of a 1-dimensional harmonic oscillator wavefunction is = 1 - x. Find the value of x. (b) The probabilities of finding a particle around points A, B and C in the wavefunction y = f(x) are P(A), P(B) and P(C) respectively. Coordinates are A (3,5), B (4,-10) and C (6,7). Arrange P(A), P(B) and P(C) in term of a < b < c, when | y-coordinate | signifies the probability.
QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.8 : (a) Acceptable wavefunction in quantum mechanics in the range of : negative infinity < x < positive infinity, vanishes at least at one boundary. Which of the following is the wavefunction or are the wavefunctions of acceptable theory : P = x, P = | x |, P = sin x, P = exp (-x), P = exp (-| x |)? State the reason. (b) Let linear momentum operator P = -ih d / dz. The wavefunction is S = exp (-ikz) where i x i = -1, k and h are constants. Find the linear momentum of such wavefunction by using the term P x S.
1 1620QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.9 : When an algebraic product is defined on the space, the Lie bracket is the commutator [x,y] = xy - yx according to Lie algebra in mathematics. If [p,x] f(x) = px f(x) - xp f(x), p = -ih d / dx, find the value of [p,x] in term of i and h.
1 1830QUANTUM CHEMISTRY AND CHEMICAL ENGINEERING - EXAMPLE 31.10 : There are 6 spin orbitals in p subshell in a ground state carbon atom. Only 2 electrons fill the p subshell. Number of different ways for n electrons to occupy the k spin orbitals are k! / [ (n!) (k-n)! ]. Find the number of different configurations of electrons to occupy the p subshell in a carbon atom.
1 1456What is the branch of chemistry that deals with the relationship between electricity and chemical reactions?
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i am a PG science(chemistry),now am working test engineer in small organization,now i will decide to move better organization please send model cv and advises
How are coupled reactions used in biochemistry?
i am graduate in chemistry . i want to do mba but i don't know in which specialisation is better for me . can you plz advice me
i have done M.S. in organic chemistry and now i got admission in M.B.A. (human resource management) but i dont know how i corelate my degree with M.B.A. to convence visa officer
i have done M.S. in organic chemistry and now i got admission in M.B.A. (human resource management) for usa college.my one sister is in london and another sister is in USA ,i am refused for visa becoz of them ,they said i won't come back after study.
hey gyes,ve done B.SC Micro n double graduation in biochemistry, n M.Sc in MLT=PARAMEDICAL, means studied all the subjects like micro,biochem,patho,bloodbank,hematology..everything n done DISSERTATION IN CYTOGENETICS n now m looking 4 a job in banglore in some research fields..so anybody can help me to find a job..pls reply me..my email id is chaku4u@yahoo.com
Hi, I am venkat. I am done with M.Sc Medical Biochemistry in the year 2007. I got rejected 3 times at US consulate, and the reason they say is why are you going agian for PG when you have already done PG, and they are not ready to get convinced only on this issue.
i am doing m.sc chemistry from delhi university..in my first yr i got 57% i am very confused about which subject should i opt for in second year...and what to do after m.sc if not selected in P.hD entrance exam..is their any job after m.sc???
i am going to face exam for the post of executive trainee (chemistry) in M.P Power generation company,i want to know the level of exam ,type of questions can be asked,and about any book whigh i can refer.
hi, i want last 10 years ongc exam recruitment papers for subject in chemistry ,genaralknowladge.
i have done m.sc in biochemistry subject.so plz tell me what type of question asked by board members of bank in my interview?
why did you choose analytical chemistry?
send the old question paper of oncg chemistry paper
hi i am siva icompleted m,sc in organic chemistry in 2008&working as alecturer can u send me the interview qusetions with answers . i expected that i got 135 - 140 marks is there any chance to get selection my interview is on may 7th 2010
can you pls provide chemistry previous papers for the post of trainee chemist in ap genco
