Answers edited by Truong-Son N.

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• When do you use gas chromatography and mass spectrometry (GC–MS) at the same time?
  
• What do you think of our great answer criteria?
  
• What is chain propagation and termination in free radical halogenation?
  
• How do you prove that momentum and position cannot be observed simultaneously as per Heisenberg's Uncertainty Principle?
  
• What is the Heisenberg Uncertainty Principle?
  
• How do you calculate enthalpy change of combustion?
  
• Why are peptide bonds important for the secondary structure of proteins?
  
• Question #6e767
  
• Why is the #pi# bond between the two central carbon atoms destroyed halfway through the rotation from cis- to trans-2-butene?
  
• What are the uses of organic compounds?
  
• Determine the mean activity coefficient and mean activity of a #"0.004 molal"# of #"Ba"("HCO"_3)_2#?
  
• What is the derivation for the half life of a second order reaction with: (i) equal concentration of reactants for the reaction 2A→product (ii) unequal concentration of reactants for the reaction A+B→product?
  
• How do you do the taylor series expansion of #arctan(x)# and #xsinx#?
  
• How do enzymes increase reaction rates?
  
• Why are the tangents for 90 and 270 degrees undefined?
  
• How do you find the indefinite integral of #int 2x ln(x^2 - 8x + 18) dx#?
  
• What happens if the electron density around a nucleus is decreased?
  
• What is another name for an aldose that contains 6 carbons in its chemical formula?
  
• What is the structure of #"C"_2"H"_3"O"_3#?
  
• If #(dx)/(dt) = "8 min"^(-1)# and #y = 1/x#, then what is #(dy)/(dt)# at #x = 2#?
  
• Why does the carbonyl oxygen get protonated instead of the ether oxygen in the acid-catalyzed hydrolysis of amyl acetate?
  
• How do you rank nucleophiles?
  
• When might it be better to report percent changes in mass, instead of absolute changes in mass?
  
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