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Explain what is the mechanism of the bromination of cis stilbene, by means of each reagent, pyridium tribromide as well as then glacial acetic acid? Step by step, written out mechanism, please.
Calculate the following for an oil (MW=169g/mol) that distills during steam distillation at a boiling temperature of 98°C at 1atm of pressure. A) The mass of the oil that codistills with each one gram of water at 98°C
a dilute aqueous solution of an organic compound soluble inwater is formed by dissolving 2.35 g of the compound in
suppose you have a buffer at ph 5.0 that is 1.00m in hx and 1.00 m in x- where hx is a weak acid with ka 1.0 x 10-5 m.
How many grams of dry NH4Cl need to be added to 2.10 L of a 0.500 M solution of ammonia, to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8*10^-5.
Describe the predicted effect on glycine biosynthesis in a mutant mammalian cell if there is a mutation in the 5'-IRE sequence of ferritin mRNA that reduces the Ka of IRP binding as compared t binding with wild-type mRNA
In a seperate trial the student puts 214 mL of the same liquid into the same flask at the same conditions. What will the pressure measure (in kPa) in the second trial?
when benzene is treated with cyclohexene in the presence of a lewis acid catalyst such as aluminum chloride
The [H3O+] is 1*10-6M in a solution. Calculate the [OH-]
description of the mechanism of this reaction? tertiary carbanion, 2-methylpentoxonium ion, sp hybridized pentyne, vicinal dihydroxide, or hydroxide ion.
The complete combustion of acetylene, C2H2(g), produces 1300. kJ of energy per mole of acetylene consumed. How many grams of acetylene must be burned
After growing up your protein in E. coli and centrifuging the cells to collect the cell pellet, at what temperature should you store the cells?
how is the equivalent weight of a cation found? is it the molecularweight divided by the number of equivalents? and how
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