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When a 200 MHz NMR is used to measure a proton. The measured Larmar frequency is 199999900 Hz. What is the value of chemical shift? When a 400 MHz NMR is used to measure the same proton, what is the chemical shift and Larmar frequncy of this proton?
Depict your all calculation in detail so I can understand the solution thoroughly
A radioactive sample contains 2.50g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 14.2 days
A compound containing only C, H, and O was extracted from the bark of the sassafras tree. The combustion of 50.7 mg produced 138 mg of CO2 and 28.2 mg of H2O. The molar mass of the compound was 162 g/mol. Find out its empirical and molecular formu..
Cake alum, aluminum sulfate, is commonly used to purify sewage. What mass of precipitate, aluminum hydroxide, forms whn 185.5 mL of 0.533 M NaOH is added to 627 mL of a cake alum solution that contains 15.8 grams per liter
What intermolecular forces account for the difference in boiling point for ethyl acetate and butyl acetate
What mass of real van der waal behaving form of N2 gas is present in a 50l container at 400K under 20 atm of N2 pressure where a=1.37 litre^2 bar mole^-2 and b=0.0387 litre/mole
The heated iron metal is poured in to a calorimeter with 100 ml of water at room temperature and the calorimeter is closed. The recorded temperature of the calorimeter is 28 degrees C.
Identify which of the following are oxidation-reduction reactions, and if they are, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced.
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 658 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour
after you preform your experiment you determine that the kf value for naphthalene is 6.91 . you are using 10g of
Draw and label a cell consisting of Bi(s), Bi(NO3)3 (aq), V(s), VCl2 (aq), salt bridge, and a wire where the Bi side undergoes reduction and the V side undergoes oxidation. Write the half reactions, balanced cell reaction where V is the reduced sp..
What is the concentration of Br- (aq) in a solution prepared by mixing 75.0ml of 0.62M iron (III) bromide with 75.0ml of water? Assume volumes are additive.
The following questions are based on the following reaction, in which Cl has a -1 oxidation number in MnCl2. 4HCl + MnO2 --> Cl2 + 2H2O + MnCl2. What is the oxidizing agent?
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