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What is the half-life (in years) of 44Ti if a 1.0 ng sample decays initially at a rate of 4.8*10^3 disintegration s/s?
consider the reaction 4 fes 3 o2g rarr 2 fe2o3s.if 12.5 g of ironiii oxide rust are pro- duced from 8.74 g of iron how
Draw the skeletal structure of 1-isopropyl-3-methylcycloheptane. Please explain, I am having trouble grasping this concept.
What is the molecular formula of the compound? , draw Structures for the molecule (1 bonus mark for every acceptable structure, up to a maximum of 5 bonus marks).
synthesize benzocaine from benzene. please explain in detail in only three steps how to achieve this reaction. list NMR, MS and IR peaks for each step.
Consider the highest angle line on the diffraction pattern of Cu and of Pb, measured at 20 celsius with CuK radiation. by what percentage is the intensity of each of these lines reduced by thermal vibration of the atoms
Calculate the full width at half height (FWHH) of a Gaussian function exp(-πx2/σ2). By considering a monochromatic source show that a Michelson interferometer performs a Fourier transform of the source in the frequency domain to a signal in the tim..
Consider the titration of a 26.0 mL sample of 0.175 M Ch3NH2 with 0.150M HBr . Determine each of the following. 1) the initial pH? 2) the volume of added acid required to reach the equivalence point
Using only the common 20 amino acids, how many differnt 4-amino acid-long polypeptides could be made?
Calculate the relative amounts of 1-chloropropane and 2-chloropane obtained the radical chlorination of propane
Suppose that 0.3 g of AlOOH (FM 59.99) plus 150 mL of 3M KOH are diluted to 1L to give the same species produced by Al(OH)3. Write mass balance equations for aluminum and potassium.
Calculate the pH of the solution that results when 25.0 mL of 0.120 M HCL is mixed with 40.0 mL of H20
You have a solution of NaCl dissolved in water. Describle a method by which these two compounds could be separated.
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