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Cesium atoms are the largest naturally occurring atoms. The radius of a Cs atom is 2.62 angstroms? How many Cs atoms would have to be laid side by side to give a row of Cs atoms 1 inch long? (Assume the atoms are spherical.)
What are the equilibrium concentrations of H2,I2, and HI. (B) to what extent does the reaction proceed? Explain. (C) what is the Kc for the production of one mole HI?
Set up and solve the Huckel secular equations for the pi electrons of NO3-. Express the energies in terms of the coulomb integrals alphao and alphan and the resonance integral beta. Determine the delocalization energy of the ion.
if a 210 mg piece of gold density 19.32 gcm3 is hammered into a sheet measuring 2.5 x 1.0 ft what is the average
The Henry's Law Constant for O2 in water at 20 C is 1.28x10-3mol/(L atm). How many grams of O2 will dissolve in 2.0L of H2O that is in contact with air where partial pressure of O2 is 0.209atm?
1.285g sample of Na2SO4 is exposed to the atmosphere and found to gain 0.393g in mass. What is the percent, by mass, of Na2SO4*H2O in the resulting mixture of anhydrous Na2SO4 and the decahydrate
0.1 g of Na2CO3 - K2CO3 powder mixture was reacted with excess HCl. According to the gas volumetric measurement, 20.4 cm^3 of CO2 was evolved at 25 degrees Celcius and 730 Hgmm pressure. Calculate the composition of the original mixture
If 100.0J of energy are added to 25.0g of water at 50 degrees celcius,what will the final temperature of the water be?
2noo2 makes no2 what mass of no2 is formed when no reacts with 384g o2? how many grams of no are required to react with
Write a reasonable reaction mechanism including intermediates
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
An aqueous solution is 30.0 % by mass ammonia, NH3, and has a density of 0.892 g/mL.The mole fraction of ammonia in the solution is?
Draw the skeleton structure of the repeating unit of the polyester made from this molecule via a condensation reaction
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