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Germanium has the same structure as silicon, but the unit cell size is different because Ge and Si atoms are not the same size. If you were to repeat the experiment described in the previous problem but replace the Si crystal with a Ge crystal, would you expect the X-rays to be diffracted at a larger or smaller angle, θ?
What is the total electronic energy
If you add 0.35 g NaF to 150 mL of a 0.30 M HF, what is the pH of the resulting solution?
Use a spreadsheet to calculate the composition of dry air at 5400K and 1 bar. Take the initial composition as .78 mol N2, .21 mol O2 and .01 mol Ar. Neglect the ionization of NO.
Suppose we start with 0.0530 mol of N2O5 in a volume of 5.2 L. How many minutes will it take for the quantity of N2O5 to drop to 0.0253 mol?
what mass of titanium displaces 65.2 ml of water at 25 circ rm
What is the final pH of a solution that contains 0.1 M of H2N-CH2-CH2-NH3+ Cl- and 0.01 M of Cl- NH3+-CH2-CH2-NH3+. The pKa values of the compound are as follows; pKa1= 7.5 and pKa2= 9.5:
The temperature is 2200 oC inside the lightning bolt, the bolt lasts long enough for all three species to reach equilibrium at that temperature, and the pressure of NO is 0.001 atm at equilibrium. Calculate the standard free energy change ΔGo for ..
A solution is made by dissolving 716.2 g of H3PO4 to water as well as diluting to a total volume of 750 mL. Compute the pH, pOH and equilibrium concentrations of [H3PO4], [H2PO4], [HPO4 2-], and [PO4?
A 0.300 M solution of an acid, HZ, has a pH = 1.301. What is the value of the ionization constant, Ka, for this acid
A 10.0 g piece of metal at 100 degrees C is transferred to a calorimeter containing 50.0mL of water initially at 23.0 degrees C. Compute the specific heat capacity of the metal if the heat capacity of the calorimeter, C cal is 25.0 J/K. The final ..
Given the values of DGfo given below in kJ/mol, calculate the value of DGo in kJ for the combustion of 1 mole of propane to form carbon dioxide and liquid water.
There are two binary compounds of titanium and chlorine. One compound contains 31.04% titanium by mass, and the other contains 74.76 chlorine by mass. What are the ratios of titanium and chlorine atoms in the two compounds.
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