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A compound forms cis-1,2-dimethylcyclopropane when it is reduced with H2 and Pd/C. The H NMR spectrum of the compound shows only two singlets. What is the structure of the compound?
When a dilute solution of a weak base (Ka- 3.5*10^-9) is titrated with a 0.100 M solution of HCl at 25 C, the equilibrium constant for the titration reaction has this value:
Which is the limiting reagent when 9 Ca atoms and 8 H3PO4 molecules react and produce 3 molecules of Ca3(PO4)2 and 9 molecules of H2?
A mechanic in an automotive repair shop is exposed to the following carbon monoxide levels over an 8 hour shift.
what measuring device would you use to measure the volume under each of the conditions described below? in some cases
Solve an equilibrium problem (using an ICE table) to calculate the of each of the following solutions. 0.15 M HF, and a mixture that is 0.15 M in HF and 0.15 in NaF
A balloon filled with helium has a volume of 2.41 L on a warm day at 311 K. It is brought into an air-conditioned room where the temperature is 295 K. What is its new volume.
if a drop of naoh is despensed from the buret but adherence to the side of the erlenmeyer flask during its
Calculate the temperature change in the water upon the complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC \Delta T to calculate the temperature change of the 275g of water.
a 35.00 mL sample of NaOH solution is titrated to an endpoint by 14.76 mL of 0.4122M HBr solution, what is the molarity of the NaOH?
Calculate the entropy of mixing if two moles of N2(g) are mixed with one mole O2(g) at the same temperature and pressure, assuming ideal behavior.
Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.
The first ionization energy, E, of a lithium atom is 0.860 aJ. What is the wavelength of light, in nm, that is just sufficient to ionize a lithium atom
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