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The thyroid horone thyroxine has the chenical formula C15H11Iodine4NO4. How many milligrams of C15H11Iodine4NO4 can be produced from 4.31x10^2 mg of iodine atoms, about twice the amount that a typical adult consumes in one day?
The half-life of U-235 , an alpha emitter, is 7.1x10^8yr. Calculate the number of alpha particles emitted by 5.1mg of this nuclide in 3.0 minute.
For the cell reaction, Cu^2+(aq) + Zn(s) (arrow) Cu(s) + Zn^2+(aq), E^* cell = 1.10V. Use the Nernst equation to determine E cell when the molar concentrations of Zn^2 and Cu^2+ are 1.0 M and 1.0 x10^-7 M, respectively.
When 6.50 g of the solid is dissolved in 50.0 g of water, the freezing point of the solution is lowered by 5.23 degrees celsius. What is the composition by mass of the solid?
At a certain temperature, the Kp for the decomposition of H2S is 0.726 H2S = H2+S initally only H2S is present at a pressure of 0.126 atm in a closed container.
A mixure of gases collected over water at 14 degrees celciushas a total pressure of 0.981 atm and occupies 55mL. How many grams of water escaped into the vapor state
Explain how you would prepare each of the following compounds from benzene:
What is the molar solubility of magnesium hydroxide: in water, in pH 12.00 buffer, and in 0.50M magnesium nitrate
Write a balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NH3 to form Zn(NH3)4 2+
Vapors are likely to be non-ideal near condensation temperatures. Would you expect such behavior to make your molecular mass to high or too low?
Heart pacemakers are often powered by lithium-silver chromate "button" batteries. The overall cell reaction is: 2 Li(s) + Ag2CrO4(s) -> Li2CrO4(s) + 2 Ag(s)
Calculate the equilibrium concentrations of NH3 and H2S if a sample of solid NH4HS is placed in a closed vessel and decomposes until equilibrium is reached
what is the pH of a solution prepared by dissolving 4.5 g HCl in water to make 410 mL of solution?
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