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Fluorine-18 decays by positron emission as well as is a key tracer used for medical imaging via positron emission tomography. Explain what is the other most likely decay mechanism for fluorine-18?
A solution is known to contain Bi3+ ion or Cd2+ ion or both. Describe the test(s) that could be used to seperate and identify these ions. Describe the results you would expect to see for each ion, if that ion were present.
A rock is found to contain 84.2% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of
How much 0.230M KOH is required to completely neutralize 55.0mL of 0.220M HClO4
A student added 27.20 cm^3 of 0.200 mol dm^-3 HCL to 0.188 g of eggshell. Calculate the amount, in mol, of HCL added. what is it?
Assuming that the following structures exist, draw the structures of IF7, IF6G,IF5 and IF4G. In addition, what would be the bond hybridization in each of these compounds and would expect them to be stable
Despite its apparent unsaturation, no hydrogen was absorbed on catalytic reduction over a Pd/C catalyst. On treatment of A with dilute H2SO4, dehydration occurred and an optically inactive alkene B, C11H14 was produced as the major product.
calculate the equilibrium constant for the neutralization reaction. To calculate the equilibrium constant, you may find it helpful to represent the neutralization reaction as the sum of two separate reactions. (b) Calculate the pH, [CH3CH2NH2], and..
Consider the reaction between a magnesium atom and a sulfur atom to form magnesium sulfide. Would you expect this reaction to be exothermic or endothermic. Explain
Determine the concentrations of K2SO4, K , and SO42- in a solution prepared by dissolving 2.11 × 10-4 g K2SO4 in 2.00 L of water. Express all three concentrations in molarity.
How do you calaculate the wavelength of the 5th line in the hydrogen atom Paschen series. Calculate the energy released in the transition from the first part.
0.4768 g of oxalic acid dihydrate (H2C2O4 • 2H2O) was weighed out and titrated with sodium hydroxide (NaOH) according to the procedure in the handout. Vi was recorded from the buret as 5.91 mL. Vf was recorded from the buret as 42.28 mL. Calculate..
The drying oven, although thought (and assumed) to be set at 125 degrees C, had an insie temperature of 84 degrees C. How will this error affect the reported percent by mass of the limiting reactant in the salt mixture
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