+1-415-670-9189
info@expertsmind.com
Explain the protons that give rise to the signal
Course:- Chemistry
Reference No.:- EM13148992




Assignment Help
Assignment Help >> Chemistry

A proton NMR spectrum (recorded using a spectrometer operating at 700 MHz) exhibits two signals, one at 7 ppm and one at 9ppm. Which of the following statements are correct? Select all that apply. A) The protons that give rise to the signal at 7 ppm are more shielded than the protons that give rise to the signal at 9 ppm. B) The protons that give rise to the signal at 7 ppm are less shielded than the protons that give rise to the signal at 9 ppm. C) The signal at 7 ppm is downfield from the signal at 9 ppm. D) The signal at 7 ppm is upfield from the signal 9 ppm. E) The resonance frequency of the protons that give rise to the signal at 7 ppm is larger than the resonance frequency of the protons that give rise to the signal at 9 ppm.




Put your comment
 
Minimize


Ask Question & Get Answers from Experts
Browse some more (Chemistry) Materials
What volume will a sample of hydrogen occupy at 28.0 degrees celsius if the gas occupies a volume of 22.3 dm3 at a temperature of 0.0 degrees Celsius. assume that the pressu
Assume the value of Delta H for this reaction is -3.8*10^2 kJ/mol The formula is 4. 2HCl (l) + Mg (s) ??? MgCl? (s) + H? (g) Assume magnesium reacts with excess HCL. Calcula
Copper has two naturally occurring isotopes,63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the pe
A 0.1510 gram sample of hydrocarbon produces 0.5008 gram CO2 and 0.128 gram H2O in combustion analysis. Its molecular weight is found to be 106. For this hydrocarbon, determ
Consider a 2430-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within 5.0 feet at the time of the
A compound of arsenic as well as fluorine is a gas. Explain a sample weighing 0.100g occupies 14.2mL at 23 C as well as 75 mmHg. Explain what is the molecular weight of the
A body consists of a right circular cone whose base is 12 in. and whose altitude is 16 in. A hole 8 in. in diameter and 4 in. deep has been drilled from the base. The axis o
Tris base (pka =8.1 ; ka = 8.32 e-9) was dissolved in 0.5l of water to give the final concentration of 1 M. a.) find pH of the obtained solution. b.) how much does the pH ch