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A 0.7120g specimen of iron ore was brought into solution and passed through a Jones reductor. titration of the Fe(II) produced required 39.21 mL of 0.02086 M KMnO4. express the results of this analysis in terms of (a) percent Fe and (b) percent FeeO3
An electrochemical cell is constructed with a zinc metal anode in contact with a 0.052 M solution of zinc nitrate and a silver cathode in contact with a 0.0042 M solution of silver(I) nitrate. What is the value of Q to use in the Nernst equation f..
Find the concentration of Cu2+ in equilibrium with CuBr(s)and 0.10 M Br
Of these three separate and individual elements: F, Ra, and As, Arsenic is more likely to form polar bonds. Why and how do you tell
A sample of 5.0mol CO2(g) is originally confined in 15dm^3 at 280 K and undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 3.0.Calculate q,w,delta T,delta U,and delta H
For the molecular fragments given below indicate the multiplicity and relative intensities of the peaks that would be produced by the bold-faced hydrogen atoms in a 1H nmr spectrum
Which of the following are molecular solids and which are covalent solids. SO2, I2, P4, S8, H2O, SiO2
the two reactions involved in quantitatively determining the amount of iodate in solution areio3-aq 5 i-aq 6 haq --gt
How might you use 13C NMR spectroscopy to determine if the brominated product is contaminated with some unreacted starting material (during the bromination of trans-cinnamic acid)
Based on their activation energies and energy changes and assuming that all collision factors are the same, which of the following reactions would be slowest in the forward direction
A solvent for an industrial process requires the use of phenol or benzene. Both are about the same in effectiveness for the process, and of course, gloves will be used when handling either solvent
The wavelength corresponding to threshold frequency to tungsten surface is 230nm . Calculate the kinetic energy of the photoelectron ejected from the surface of tungsten metal.
considering the molecule hooh. what happens to the overlap in the sigma bond between the 2 o atoms as one hydroxyl
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