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Problem- Galium has two naturally occurring isotopes: 71Ga with a mass of 70.9171 amu and a natural abundance of 39.89% and 69Ga. What is the mass of 69Ga in units of amu?
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Serum taken from a patient being treated with lithium for manic-depressive illness was analyzed for lithium concentration. A reading of 414 units was obtained for the intensity of the 671 nm red emission line. Then 1.00 mL of a 11.9 mM Lithium sta..
For the decomposition of ammonia on a tungsten surface at 1100 oC 2 NH3 N2 + 3 H2 the average rate of disappearance of NH3 over the time period from t = 0 s to t = 1417 s is found to be 3.40E-6 M s-1. The average rate of formation of N2 over the s..
rank the given solutions in aquous form from lowest to highest boiling point 0.5 m nacl 1 m kcl 0.5 m bacl2 1 m
Why would the cell potential be higher with the addition of 6 M Na2S solution to .001 M of CuSO4 (compared to 6 M NH addition to .001 M CuSO4)
Problem- a 2 ml sample was taken of a saturated solution of barium iodate at 10 degrees C. The sample was mixed with 2 ml of 0.5 M KI and 2 ml of 1 M HCl.
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy released by the formation of water from H2 and O2 into electrical energy. Determine the quantity of electrical energy obtained from converting 1 mole of H2 into H..
Problem- After 55.0 min, 35.0% of a compound has decomposed. What is the half-life of this reaction assuming first-order kinetics
What are the concentration(grams if a solid is formed) of all species in sol'n when 25.00mL of a 0.15M sol'n of calcium nitrate are mixed with 37mL of 0.65M sodium chloride
Question- What is the molality of the 50.0 mass % ethylene glycol (C2H6O2) solution in the water used for automobile antifreeze
What are the electron configurations of the following metal ions: Fe3+, Zr4+ and Co3+?. Draw a) the high-spin electron configuration for a complex containing Fe2+ and b) the low- spin electron configuration for a complex containing Fe2+. Assume an..
Compute the amount of heat needed to completely sublime 96.0g of solid dry ice (CO2) at its sublimation temperature. If the heat of sublimation for carbon dioxide is 32.3 kJ/mol.
calculate the total amount of heat energy that must be removed to convert 34.0g of steam to water at 25 Celsius
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