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The space group of a perovskite structure, CaTiO3 crystal is Pm-3m short-hand; 4/m-32/m full notation.
a) What is the point group?
b) Specify the atoms in the basis and their x,y,z coordinates given the Bravais lattice specified to the answer in part (b)
c) Specify the crystallographic axis of the symmetry elements in the space/point group symbol.
d) What type of rotation axis does the structure have parallel to the [0 0 1] direction and show the location of this axis in a [0 0 1] projection of this crystal structure?
Explain the difference between exposure to radioactivity from a source external to the body versus a source that has been consumed and is therefore inside the body.
the resulting mixture has (pb2+)i=1.0x10^-3M, (so4^-2)i=1.0x10^-4 for pbso4 ksp=1.3x10^-8. compare qsp to ksp and decide whether a precipitate will form.
A rigid container of O2 has a pressure of 388kPa at a temperature of 713K. What is the pressure at 273K.
a gas sample was collected over water at 25.3 degrees celcius. the total pressure is determined to be 0.97 atm. what is the partial pressure of the gas that is collected?
The delta G inital for the dissociation of an aqueous solution of a weak acid at 25 degrees celcius is 14.8 kJ. What is the calue of Ka for the acid?
The energy (in kJ) that is removed as heat from this system when the Carnot refrigerator from part a) contains 340. g of R-12. Assume the heat is removed in a constant pressure process.
Draw the line and wedge structures of the products obtained on addition of iodine azide to both cis and trans-2-butenes. Assign ‘R' or ‘S' to the asymmetric centers in your product.
which of the following are found in cell membranes?
Assume no heat is lost to the surroundings. The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. A)liquid B)gaseous C)solid
Calculate the density and radius of the ball bearing (volume of a sphere of radius r is 4/3pi r^3).
Determine the amount of hydrochloric gas that should be bubbled into the buffer to triple hydronium ion concentration is closest to what?
what is the volume of .712 M ammonium sulfate contains 8.90 g of ammonium ion?
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