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Compute energy in joules released in formation of one mole of MgSe bonds. Radius of Mg ion is 1.60 A angstroms and radius of selenide ion is 1.26
A. Utilize the coulomb's law formula,
E=kq1q2/d
k=2.31*10-28
It is desired to produce an aqueous solution of pH=8.75 by dissolving one of the following salts in water at 298 k. Which salt would you use and at what molar concentration?
assume that the activation energy for a certain reaction is 173 kjmol and the reaction is started with equal initial
if you know the amounts of acid and base components in the buffer you can use the equation to find the ph. find the ka
A solution is prepared by mixing 10g of water with 10g of ethanol. What is the mole fraction of water in the vapor phase at 30 degree C. The vapor pressure of water at 30 degree C is 32 torr and ethanol is 78 torr. The molar mass of water is 18.02..
a student dissolves 1.50g of copperii nitrate in water. after adding aqueous sodium carbonate solution which contains
The energy required to ionize boron is 801 kJ/mol. What minimum frequency of light is required to ionize boron?
aggressively destroy cancerous cells. If a 2.10 kg mass of body tissue exposed to the radiation absorbed 3.60x105 beta particles, and the RBE factor is 0.80, how many REMS did the patient absorb
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
What is the magnetic field strength of the NMR system in Tesla? Show all equations and explain. c) Are the resonances of A and B well enough resolved to be able to measure the relative concentrations by NMR? Explain reasoning.
gold forms a substitutional solid solution with silver. compute the weight percent of gold that must be added to silver
what is the difference between the solvents used to run TLC's of polar and non-polar lipids?
briefly describe how the atomic radii and ionization energies of group 1a1 elements compare with those of group 8a18.
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