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Two thin concentric spherical shells of radius 0.05 m and 0.15 m, respectively, have their annular cavity filled with charcoal.
When energy is supplied at the steady rate of 10.8 W to a heater at the center, a temperature difference of 50°C is set up between the spheres. Find the thermal conductivity of charcoal.
What does the angular momentum quantum number determine? Check all that apply. A.) the overall size of an orbital B.) the energy of the electron on the outer shell C.) the possible number of electrons on particular orbital D.) the energy of an orb..
Question- A 97.4g of unknown metal sample was heated to 98.7 degree C and placed into calorimeter containing 75.0 g of water at 23.6 degree C (c of water =4.184 J/g.K) the heat capacity calorimeter was 15.7 J/K. the final temperature in the calori..
What is the animals inital radiation exposure in curies? b. If all of the energy from the emitted alpha particles is absorbed by the animal's tissues, and if the energy of each emission
what happens to the amine group? Most classical organic chemistry literature is devoted to reactions in solvents or at much lower temperatures but reactions at higher temperatures are rarely studied.
22.3 g of a substance x dissolves in enough water to make 0.507 l of a 0.779 m solution. calculate the molar mass of x
Calculate the heat of solution (i.e., delta H of solution)of ammonium nitrate in kJ/mol. Assume that the energy exchange involved only the solution and that the specific heat of the solution is 4.18 J/g. deg. C. Show work or include as much explan..
Which of the following terms would be used in a description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
The ph of a solution is 10 compute the concentration of H30+. State an equation showing the ionization of a strong acid in h20.
A urine sample was found to have a pH of 5.83. What would be the ratio of the unprotonated form, A, to the protonated form, HA, for uric acid in this urine sample?
An unkown metal crytallizes in one of the three cubic lattices. The edge length of the unit cell is 408pm. Given that the atomic radius of the metal is 144pm and the density of the solid is 19.3g/cm-3, what is the atomic symbol of the metal? a=2R ..
Which of the following experimental observations best justifies Bohr's assertion that the energy of the electron in the isolated Hydrogen atom is restricted to certain allowed values (quantized)
calculate the osmotic pressure of a magnesium citrate laxative solution containing 26.5 of magnesium citrate in 220 of
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