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What is delta U when 1.00 mol of liquid water vaporizes at 100 degrees C? The heat of vaporization is 40.66kJ/mol at 100 degrees C.
write the equation for self-ionization of water and why ammonia is a weak base.
What is the energy in joules released by the fission of a single uranium-235 atom?
draw structures for p-bromoaniline, 3,5 dimethylbenzoic acid, p-chlorobenzaldehyde and 1-phenyl-3-methylpentane
The total mass of the car plus sand is 85,000 . The hopper door is not fully closed so sand leaks out the bottom. After 18.0 minutes, 1.34×104 of sand has leaked out. Then what is the speed of the railroad car?
Compare the relative reactivities of the alkyl halide substrates used in this experiment to both SN1 and SN2 reaction conditions.
you need 4.5L of nitric acid solution with ph 6. you have unlimited amounts of nitric acid solution with a hydronuim ion concentration of 0.01M. Describe how you would form the required solution from the standard solution?
Normalize the total energy eigenfunctions for the three-dimensional box in the intervals 0 ? x ? a, 0 ? y ? b, 0 ? z ? c.
Calculate the value of the solubility product constant for PbSO4 from the half-cell potentials. PbSO4(s) + 2e- ? Pb(s) + SO42-(aq) Eº = (-0.383) V Pb2+ + 2e- ? Pb(s) Eº = (-0.127) V These half-cell potentials are not accurate.
A sample of helium gas has a volume of 8.23 L at 258.8 K and 2.049 atm. How many helium molecules does it contain
Calculate the molar concentration of HCl in a solution that has a specific gravity 1.185 and is 36.5% (w/w). Prepare from this bottle 1 L of 0.1 HCl solution. 25 mL of this solution titrated with 30 mL of NaOH.
HbS has normal shape under normal conditions, but under conditions of low [O2] the hemoglobin forms fibrous aggregations, giving the entire red blood cell a sickle shape. (See image of eight HbS molecules at right.)
What does the structure of isopinocampheol (the product of a hydroboration-oxidation reaction of (1R)-(+)-alpha-Pinene) indicate about the mechanism of the reaction in terms of regioselectivity and stereoselectivity
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