PRACTICE PROBLEM #4 Determine the structure of the following molecule C10H11CIO2 using the following information: Wavenumber (cm-1) 3500 3300 3000 2200 1700 1600 1000 10X2+2=22 11+1=12 1 3 =J 22-125 2 6 22 12 11 10 9 8 7 6 5 4 3 2 1 0
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- (a) Calculate the energy difference between the two spin states of 1H and of 13C in a magnetic field of 6.8 T. 1H 4.0 13C 4.0 J (b) What is the precession frequency of a 1H nucleus at this magnetic field? Of a 13c nucleus? 1H 4.0 260 MHz 13C (4.0 65 MHz (c) At what magnetic field do protons precess at a frequency of 300. MHz? 4.0 T.QUESTION 1 The pure rotational spectrum of 'H131 consists of a series of lines separated by 13.10 cm of the J = 43 transition is: O 52.4 cm1 O 9 85 x 106 m1s1 O 82.5 cm s1 O 101.25 cm1 O 106 s cm1 The wavenumberPlease correct answer and don't used hand raiting
- 5. C7H100 %T 9 HR20450064045 100 80 60 40 20 9000 8 1 1:1 7 Jul 3000 6 T 5 : ppm 2000 4 3 بلد 2 1500 2: 3 multiplet Wavenumber(cm-1] 1 0 1000 500 400 180 160 140 goll CR2005006-46NS DEPT-90 120 100 لللوحة DEPT-135A ppm 80 60 40 20 0A student prepares a solution of his dye and measures its absorbance using a 1 cm cuvette. The absorbance is 0.37 and the concentration of the solution is 2.0 * 10-5 M. Determine the molar extinction coefficient at this wavelength (Integer only) answer: Which of the following transition would be spin allowed? Group of answer choices a n to p b n to s c n to s* d n to p* e p to p* Which of the following transitions will exhibit the shortest wavelength in the UV-Vis spectrum? Group of answer choices a p to s* b s to s* c n to p* d p to p* e n to s*How many signals do you expect in HNMR A) 1 B) 2 c) 3 D) 4
- (a) Calculate the energy difference between the two spin states of 1H and of 13C in a magnetic field of 6.8 T. 1H 4.0 1.91e-29 X J 13C 4.80e-33 X J (b) What is the precession frequency of a 'H nucleus at this magnetic field? Of a 13C nucleus? 1H 4.0 290 MHz 13C 4.0 73 MHz (c) At what magnetic field do protons precess at a frequency of 300. MHz? [4.0 7.04For light with a wavelength of 9.60 µm, calculate the corresponding wavenumber value. wavenumber cm-!(a) Calculate the energy difference between the two spin states of 1H and of 13C in a magnetic field of 6.8 T. 1H 4.0 1.19e-25 X J 13C 4.0 J (b) What is the precession frequency of a 1H nucleus at this magnetic field? Of a 13C nucleus? 1H 4.0 290 MHz 13C 4.0 73 MHz (c) At what magnetic field do protons precess at a frequency of 300. MHz? 4.0 7.04 T