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the alpha decay of a certain radioactive nucleus of mass 240, two groups of alpha particles are observed. If E(alpha) for decay to the ground state is 6.887 MeV and the first excited state is 1.021 MeV above the ground state, what is the energy of the alpha particle that decays to the first excited state? You may neglect both relativistic effects and the recoil of the daughter
Draw a mechanism for conversion of acetaminophen into phenacetin in the presence of K2CO3 and CH3CH2I.
A 91 gram solution of silver nitrate contains 8 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
determine the number of carbon atoms in the compound. Natural abundances: 12C is 98.93% and 13C is 1.07%
A buffer solution is prepared by mixing 47.5 mL of 0.772 M carbonic acid with 58.8 mL of 0.0346 M sodium hydrogen carbonate. 1. Calculate the pH (to two decimal places) of this solution. Assume the 5% approximation is valid and that the volumes are a..
A voltaic cell consists of a Hg/Hg2^2+ electrode(E degrees=0.85V) and a Sn/Sn^2+ electrode(E degrees=-0.14V). Calculate[Sn^2+]if [Hg2^2+]=0.36 M and Ecell=1.04V at 25 degrees C.
Write the Bronsted-Lowry chemical equation describing how HC4H7O2 behaves when add to water
A 283-g sample of nickel at 100.0°C is placed in 100.0 mL of water (density = 1.00 g/mL) at 22.0°C. What is the final temperature of the water?
The absorbance at 595 nm was 0.78 and,according to a standard curve, corresponds to 0.015 mg of proteinon the x axis. What is the protein concentration of the original solution?
calculate the crystal field splitting energy in Kj/mol for blue soloution containing the copper complex [Cu(NH3)6]^2. the solution exhibits
The vapor pressure of benzene is 53.3 kPa at 60.6°C, but it falls to 51.5 kPa when 19.0 g of a nonvolatile unknown organic compound is dissolved in 500 g of benzene. Calculate the molar mass of the compound.
Methyl salicylate is an ester and can be prepared from salicylic acid and methyl alcohol by the same method
What are the boiling point and freezing point of a 2.47 m solution of naphthalene in benzene? (The boiling point and freezing point of benzene are 80.1°C and 5.5°C, respectively.
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