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Question: Use the expression just obtained for the radius of the hydrogen atom and derive an expression for the total energy of the hydrogen atom in terms only of fundamental constants such as e, h¯ , c, and the mass of the electron m.
a patient needs to take 875 mg of ibuprofen twice daily. the pills in the bottle are each 250. rm mg. how many pills
Fifty percent of that sunlight is captured by the collector and heats the water flowing through it. What would be the temperature rise of the water as it leaves the collector?
The standard electrode potential for the following reaction is -.57 V. What is the potential at pH = 12. TeO32- [1M] (aq) + 3H20 (l) + (4e-) ----> Te (s) + 6OH- (aq)
Explain which of the following gases would be expected to behave most almost ideally under the same conditions. H2, F2, HF. Explain which one would be expected to deviate from ideal behavior to the most
Write a chemical equation for the synthesis of ethyl 2-methylpropanoate. Use structural formulas for each organic compound in your equation. Name each reactant.
A solution of 1.138g of naproxen in 25g benzene has an osmotic pressure of 4.00 atm at 20 C. The density of benzene is 0.8787g/mL. Assume the density of the solution equals the density of pure benzene. What is the molar mass of haproxen
A solution is made by taking 54.62 g of K2CrO4 in enough water to make 250.0 mL of solution. The molarity of the solution is therefore
determine the ph of an equilibrium aqueous mixture of 1.0 m glycine gly and 0.5 m hcl assuming that pkdnan 9.8 for the
Question- Give two ways that the genetic code itself works to ensure errors are not persistent in DNA
Calculate how many grams of ATP must be produced to walk a mile. ATP synthesis is coupled to the oxidation of glucose (?Go' = -686 kcal/mol). How many grams of glucose are actually metabolized to produce this amount of ATP?
Calculate molar extinction coefficients from a UV visble spectrometer and use it to determine the geometry of complexes
A buffer that contains 0.347 M of a base, B and 0.483 M of its conjugate acid BH+, has a pH of 8.08. What is the pH after 0.00713 mol of HCl are added to 0.442 L of the solution
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