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Consider a particle of mass, m, moving in a one dimensional system between x=a and x=b with the potential energy, V(x) = 1+(hbar squared/mx^2).
Write the shrodinger equation for this system with as much details as possible
Dissolving 3g of an impure sample of CaCO3 in HCl produces .656 L of CO2, measured at 293 K and 1.04 atm. What is the percent by mass of the CaCO3 in the sample?
the ionic substance t3u2 ionizes and produces ions as t2and u3-ions. determine the value of the solubility-product
When a sample of DNA forms a double helix the measured deltaG is -17 kcal/mol at pH 7.0, 1 M NaCl, and 37 degrees C. If the enthalpy change for this process is -63 kcal/mol. What is the entropy change for this system
Window glass is typically made by mixing soda ash (Na2CO3), limestone (CaCO3), and silica sand (SiO2) and then heating to 1500 degrees Celcius to drive off Co2 from the Na2CO3 and CaCO3
How many liter of ethane, measured at 15 degrees C and 711 torr, must be burned to liberate 2.73 * 10^4 KJ of heat? 2(C2H6) +7(O2) ----> 4(CO2) + 6(H2O) [delta H= -3.12 *10^3]
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
Write balanced chemical equations and the solubility product expressions for the solubility equilibria of silver chloride and calcium phosphate.
If an unknown is water soluble, why is it unnecessary and potentially misleading to perform (and interpret) the result of the solubility of this unknown in 5% HCl.
Consider an aluminum atom to be a sphere with radius equal to 143 pm and calculate the volume actually occupied by the atoms in your aluminum cylinder
Suppose you have the following reagents available under standard conditions. (i.e., P = 1 atm for all gases; t = 25 oC; C = 1 mol L-1 for all aqueous species, including H+.) Co(s), Ag+(aq), Cl-(aq), Cr(s), BrO3-(aq), I2(s), F-(aq) (a) Which is the..
What precautions or what type of actions should the EH&S or FS professionals take when faced with a situation involving polychlorinated biphenyls (PCB's.)?
q1.if 21.64ml of 9.44times10-4m kmno4 solution is required for the titration calculate how many mgs of ca2 are present
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