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Explain the prostaglandin precursor arachidonic acid has the molecular formula C20H32O2. Specified that arachidonic acid is an acyclic carboxylic acid that contains no carbon-carbon triple bonds explains how many carbon-carbon double bonds are present?
A) 2
B) 5
C) 4
D) 3
E) 6
The change cannot be determined without more specific information. It will remain constant. It will decrease by a factor of 2. It will decrease by a factor of 4.
suppose that cells are grown on amino acids that have all been labled with 13C at the alpha carbons. identify the atoms in cytosine and guanine that will be labled
what mixing proportion is required for lime stone with 91% CaCO3, and clay with 31% CaCO3 to get a raw mix with a CaCO3 content of 76%.
suppose you wanted to dissolve 106 g of Na2CO3 in enough H2O to make 6.00L of solution what is the molar mass of Na2CO3.
A 25.0 mL sample of 0.400 M NH3(aq) is titrated with 0.400 M HCl(aq). What is the pH at the equivalence point. (Kb of NH3 = 1.8 ´ 10-5)
You collect a distillate sample which has a refractive index of 1.391. Assuming that the refractive index of the hexane + toluene mixture varies linearly with mole fraction, what is the mole fraction of hexane in your sample?
data below show equilibrium constant for this reaction meassured at several different temperature. use data to find dHrxn and dHSrxn for reaction
what is the work in joules done on the system to compress he gas from 24.0 l to 12.5 l against a pressure of 1.5 atm at
KBr solution added to this colorless solution will cause pale yellow AgBr to precipitate. List the species, Cl-, NH3, or Br- in order of decreasing stability of the compounds or complexes that they can form with silver and explain your reasons.
It would be possible for the carbocation to proceed to a product other than the alcohol discussed in the Experimental writeup without changing out kinetics calculation. Write the structure of another organic product
explain why granulated activated charcoal is considered to be the best available treatment technology for dioxins in water.
Predict and sketch the likely splitting patterns and relative integrations for them most downfield resonance(s) in the proton NMR spectra of both primary alcohols below. Explain why the two patterns are different.
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