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Assume you have a material in which an equal number of electrons and holes are available to transport charge. If the resistivity of this material is 3.15 x 10-1Ω-m and the number of each type of charge carrier is 1 x 1013 cm-3, estimate the mobility of the electrons (assume μe=3μh).
We add 10 mL of 0.1 M NaOH to 100 mL of solution containing 0.1 M CH3CO2H and 0.1 M CH3CO2-. (Ka = 1.8 x 10-5) Using the Henderson-Hasselbalch equation, pH = pKa + log([A-] / [HA]), determine the pH
Suppose the pH inside the inner mitochondrial membrane is 0.75 units higher than outside the membrane and ?f = fout - fin = -0.168V. Calculate the electrochemical potential difference between protons inside versus outside the membrane.
Explain why the major product of bromination of vanillin was 5 bromovanillin and not 2 bromovanillin or 6 bromovanillin.
The value of ΔE for a certain change is 1325 J. During the change, the system releases 873 J of heat.How much work, expressed in joules, was involved?
an unscrupulous character wants to gold-plate a cheap watch tosell. he has a solution of aqueous auno3 and figures he
LDA is added to a solution containing methyl pentanoate. After this reaction has gone to completion, 2-butanone is added. Once this reaction is completed an acid workup is performed.
The solid KIO3 is diluted shy of the 100mL mark in the volumetric flask. does this technique error result in a reported molar concentration of KIO3 that is too high or too low
What total volume of ozone measured at a pressure of 29.0mmHg and a temperature of 234k can be destroyed when all of the chlorine from 16.5g of CF3Cl goes through ten cycles of the above reactions
a patient needs to take 875 mg of ibuprofen twice daily. the pills in the bottle are each 250. rm mg. how many pills
At 0.0 degrees C, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 685 mmHg, what is the number of moles of air?
How much heat is required to raise the temperature of 42.5 g of water from its melting point to its boiling point?Express your answer numerically in kilojoules.
At room temperature benzoic acid dissolves in the less polar solvent, ether, but not very much in the more polar solvent, water. However, the deprotonated species, the benzoate ion, dissolves in water but not ether. What does this tell you about t..
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