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Nuclides above the valley of stability can become more stable through which of the following processes?neutron bombardmentpositron emissionbeta emissiongamma emissionelectron capture
consider the reaction of 5.0g of propane with 10.0ml ofmolecular bromine to form 2,2 dibromopropane and hydrogenbromide. a. look up the molecular weight of propane (44.1) and calculate the moles of propane present before the reaction
In the titration of 68.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.49 M HCl, calculate the pH under the following conditions.
Unfold the enzyme with urea and 2-mercaptoethanol. Then incubate and crystallize it in the presence of the substrate followed by X-ray crystallography.
A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
Methyl salicylate is an ester and can be prepared from salicylic acid and methyl alcohol by the same method
To determine the concentration of a sodium thiosulfate solution as in this experiment, a student pipetted 25.0mL of 0.100M potassium iodate (KIO3) solution into a 125mL Erlenmeyer flask. Potassium iodide and sulfuric acid were added as in this exp..
A buffer solution of pH of 9.25 contains P mol of a weak base and Q mol of a salt of its conjugate acid. When 120 cm3 of a 0.0140 mol.dm-3 solution of hydrochloric acid was added to this buffer solution
Hydrogen sulfide decomposes according to the following equation, for which Kc = 0.00011 at a given temperature. 2 H2S(g) 2 H2(g) + S2(g)
Determine whether each of the following causes an increase or decrease in the activity of the electron transport chain. large difference in H+ concentration across the inner mitochondrial membrane
Explain the following: a.) The cycloheptatrienyl anion is antiaromatic, whereas the cyclononatetraenyl anion is planar (in spite of the angle stain involved) and appears to be aromatic. b.) Although
Whats the volume of 1.05 mol of benzene at 20.7 C? The density of benzene of 0.879 g/mL.
typical industrial electrolysis cells can produce approximately 6kg of F2 in a 24 hours day. At what current (A) are these cells operating for this to be true
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