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Problem- There are two benzylic bromides that give (E)-4,6-dimethyl-3-phenyl-3-heptene on E2 elimination. Draw them. Use wedge and dash bonds to indicate stereochemistry. Do not explicitly draw hydrogens.
Give reasons or calculations to sustain your answer.
An aqueous solution of weak base B of unknown concentration is titrated with a known concentration of acid, HA. Write the balanced chemical equation for this acid-base
Problem- Describe ways in which the number of plates on a chromatographic column can be increased. Are there any tradeoffs associated with these changes?
Is the energy that an electron has in the first energy level of atom A the same as the energy that an electron would have in the first energy level of aom B
How many isomers are there for the trifluorotrinitrocobalt (III) complex? Draw them. Are any enantiomers. Label each structure with an appropriate descriptor
A solution of ammonia and water contains 4.70×10^25 water molecules and 7.80×10^24 ammonia molecules. How many total hydrogen atoms are in this solution
What volume of 0.1M NaOH is required to fully neutralize 20 mL of 0.1M acetic acid? of 50 mL of 0.04M Phosphoric acid
Question- Find the ph and concentrations of CO3^2-, HCO3^-, H2CO3 at the first equivalence point when 50ml of 0.150M carbonic acid is titrated with 0.120M NaOH. (pk1=6.351, pk2=10.329)
What is the percent yield of CO2 if the expected theoretical yield is 8.11·10-3 mol? Vapor pressure of water at 20.0 oC is 17.55 mmHg .
If A certain first-order reaction is 35.5 % complete in 4.90 min at 25 degree Celsius. Define what is the rate constant
a) The reaction will shift toward products with no change in K. b) The reaction will shift toward products with a decrease in K. c) The reaction will shift toward products with an increase in K. d) The reaction will not shift and the value of K wi..
While did the mammoth live. Presume that living organisms have a carbon-14 decay rate of 15.3 dis/min*g C as well as that carbon-14 has a half-life of 5730 yr.
Write the balanced formula unit equation for the reaction of sodium with oxygen (use major product). What is the sum of the coefficients
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