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What is the approximate H-O H bond angle in ice, where H-O is the covalent bond and O H is the hydrogen bond
Titanium (w=6.94x10^-19J) and silicon (w=7.77x10^-19J) surfaces are irradiated with UV radiation with a wavelength of 217nm. What is the wavelength of the electrons emitted by the titanium surface
Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired electrons of each of the following complexes (consider C2O42- and H2O as strong field ligands which
What is the molarity of a solution prepared by dissolving 11.5g of solid NaOH in enough water to make 1.50L of solution?
A sample of hydgrogen gas, H2, has a volume of 8.56L at a temperature 0C and a pressure of 1.5 atm. Assuming the gas behaves ideally: how many moles of H2 are present in this gas sample
A 4.0L sample of air collected at 298 K and then cooled to 278F while held at constant pressure. What is the new volume of the air
Name the two types of nucleic acids and where each is found in the cell. Also include the four bases particular to each nucleic acid.
Chromatographic column, it is important to let the level drop in the column eluent to the level of the sand before applying the solution of the compound to be separated. What effect would have on th
This indicates that the unknown material is a pure compound? Not be a pure compound, suggest an alternate procedure to verify the purity of the sample
Diagram a thiol cleavage reaction (using expanded structural formula) of butene. Be sure to include all the possible product(s) formed. Name the product(s).
Assuming that all the other quantum numbers can take only the values possible in our world and that the Pauli esclusion principle applies, give the following.
How many equivalents of electrons were delivered to the unknown soln? What is the normality of the unknown solution?
When 4.00 g of hydrogen nuclei fuse to form helium in the sun, 0.0265 g of matter is converted into energy. Use Einstein's equation, E = mc2, to calculate the energy equivalent of this change in mas
What is the partial pressure in torr of O2 in the atmosphere that corresponds to this concentration? The Henry's law constant for O2 in water is 3.27 x 107 torr. How does this compare with the actua
the solubility in water is 8.7 g per 100 mL at 20 degrees C and 34.2 g per 100 mL at 100 degrees C. Write the equation for the solubility equilibrium, including heat as a reactant or product. What i
you take an unknown solution and measure 1ML of it into a flask. You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2
You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2+ by the unknown solution. a) What is the equivalent weight of (M
You are given an acid with an equivalent weight of 62.5 g. What is the average molecular weight if the acid is diprotic? a) How many grams of your acid are needed to make 150mL of a .750 N (normal) so
The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, B, C, and D. 1H NMR of D: d 8.1-7.5, multiple
Assuming that some of the maleic anhydrisde hydrolyzes prior to the diels alder reaction, what byproduct would you expect to be present after the diels alder reaction is run
What is the equivalent weight of (MnO4). How many equivalents of electrons were delivered to the unknown soln
How many equivalents of electrons were delivered to the unknown soln. What is the normality of the unknown solution
You obtain an unknown acid. You weigh out .856 grams of it and dissolve it in 45mL of water. You titrate it with 27.4mL of .5 M NaOH. What is the equivalent weight of the unknown acid
methane flowing at 2 mol/min is adiabatically compressed from 300 K and 1 bar to 10 bar. What is the minimum work required? Use Departure Functions.