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The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
?E = (0.705 x 10-26 J T-1)B
where B is the magnetic field strength in Tesla. In an NMR spectrometer with a 1.45 T field strength, what is the ratio of the population of nuclei oriented opposite the magnetic field with respect to those oriented with the magnetic field at 25 °C?
In a separate experiment, it was found that, for fixed temperature and pressure, a 0.100 L sample of this compound takes 1.73 times longer to effuse than does a 0.100 L sample of Ar(g). What is the molecular formula of the compound? Draw possible ..
Explain why does ATP synthesis occur in the presence of Rotenone ( an inhibitor of one the reactions in the electron transport system.) if succinate is combined but not ATP synthesis doesn't occur if L-malate is added?
Please Describe functional groups and their nomenclature, particularly, hydroxyl groups, carboxylic acids, amines, amides, and anhydride bonds is needed.
A mixture of CO(g) and O2 (g) in a 1.0-L container at 1.0x10^3 Kelvin has a total pressure of 2.2 atm. After some time the total pressure falls to 1.9 atm as the result of formation of CO2. Find the mass (in grams) of CO2 that forms.
What is the relationship between atomic radius and ionization energy.
The solubility of KNO3 is 155g per 100g of water at 75 degrees C and 38.0g at 25degrees C. What mass in grams of KNO3 will crystalize out of solution if exactly 100g of it's saturated solution at 75 degrees C is cooled to 25 degrees C?
A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 67.9kJ of heat. Before the reaction, the volume of the system was 8.80L . After the reaction, the volume of the system was 2.80L .Calculate the total internal energy change ..
When calcium carbonate is added to the solution of organic acids, the following compounds form: calcium methanoate salt from the methanoic acid; calcium ethanoate from the ethanoic acid; and calcium phenoxide salt from the phenol.
Mole fraction of MgCl2 in an aqueous solution prepared by dissolving .400 moles of MgCl2 in 850g of water
Give the orbital designation (1s, 2p, 3d, etc) of electrons with the following combination of principal and azimuthal quantum numbers.
It takes 78.2 J of energy to raise the temperature of 45.6 g of lead by 13.3 oC. What is the specific heat capacity of Pb? What is the molar heat capacity of Pb.
Iron is obtained commercially by the reaction of hematite (Fe2O3) with carbon monoxide. How many grams of iron are produced if 25.0 moles of hematite react with 30.0 moles of carbon monoxide?
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