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Calculate the number of vacancies per cubic meter in some metal at 759°C. The energy for vacancy formation is 0.82 eV/atom, while the density and atomic weight for this metal are 6.94 g/cm3 and 93.07 g/mol, respectively.
Which of the following equations represents the proper net ionic equation for the precipitation of an insoluble hydroxide compound from Al(NO3)3(aq) and KOH (aq)
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
A chemist was called to an abandoned aspirin factory to determine the contents of a badly corroded vat. Knowing that two salvage workers had become ill from breathing the fumes
A 4.10 g nugget of pure gold absorbed 278 J of heat. What was the final temperature of the gold if the initial temperature was 25.0°C? The specific heat of gold is 0.129 J/(g·°C).
Calculate the entropy of unfolding of lysozyme at 25 oC, given that the difference in PCof unfolding is 6.28 kJ/mol/K at both 25 oC and 75 oC. Hint: consider a path of 25 oC (folded)?75.5 oC(folded) ?75.5 oC(unfolded) ?25 oC(unfolded).
Calculate the number of grams of alcohol present in 1.00 L of 87 proof gin. The density of ethanol is 0.798 g/mL.
If 116g of butane burns in the presence of 320g of oxygen how much carbon dioxide will be produced
Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.0 g/cm^3 at 27 degrees C. Calculate the atomic radius of Pd.
If you wish to obtain 10.0 grams of copper metal from copper(II) sulfide, what mass of copper(II) sulfide (in grams) must you use?
determine the structures of Compounds A, B, C, D, and E. Show calculations. Support all of your structure determinations. Student performed a sodium borohydride reduction experiment.
Suppose that O1 and O2 are eigenfunctions of a linear operator A with eigenvalues a1 and a2, respectively, and that we construct a linear combination Y=C1O1 + C2O2
what is the value for the standard internal energy of formation for acetyl chloride ch3cocl
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