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There is a system with four energy levels (with energies 0,1,2,3 units). If we have 10 distinguishable particles that must have a total combined energy 0f 10 units, determine the particle distributions allowed (there are 14) and calculate W (the number of micro states for each possible distribution.
The Ksp of nickel(II) hydroxide, Ni(OH)2, is 5.84 × 10-16. Calculate the solubility of this compound in g/L.
Which of the following would be the best procedure for extracting acetaldehyde from an aqueous layer to the organic layer? a. Extracting the aqueous layer one time with 200 mL of the organic solvent.
Depict a molecular energy level diagram for the water molecule, and fill in the electrons and is the multiplicity of water a single t
What is the ph of a solution that is 0.0020 M acetic acid and 0.010 M sodium acetate? Note: the pKb for sodium acetate is 9.25
A semiconductor of n-type is know to have an electron concentration of 3 x 10^18 m ^3 if the electron drift velocity is 100 m/s in an electric field of 500 V/m, calculate the conductivity of this material.
Potassium metal reacts violently when added to water according to the balanced equation: 2K(s) + 2 H2O (I) > 2KOH(aq) + H2(g). How many moles of H2O are needed to react completely with 7.54 mol of K
Tungsten crystallizes in a cubic unit cell with an esge length of 3.165 (Angrstroms)and with a tungsten atom on each of the corners of the unit cell and in the center of the unit cell
When a 41.7g sample of an unknown compound is dissolved in 500g of benzene, the freezing point of the resulting solution is 3.77oC. The freezing point of pure benzene is 5.48oC, and Kf for benzene is 5.12oC/m. Calculate the molar mass of the unkno..
The sum of the substituent positions do not add up to lowest possible number. -The double bond in the ring does not contain the number one carbon. -Molecule has no cis-trans isomers. -The wrong name for the benzene derivative is used
How much heat energy is needed to raise the temperature of a 0.50 L of ethanol (d = 0.79 g/mL) from 20.0°C to 50.0°C. Specific heat capacity of ethyl alcohol = 2.45 J/g°C
pure water is saturated with a 21 mixture of hydrogen and oxygen at a total pressure of 5 atm at 298 k. the water is
A liquid that has a density of 0.80 0.01g/ml and 0.80-0.01 g/ml is insoluble in cyclohexane. what is the liquid? what is the boiling point of cyclohexane at 600 mm hg?
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