Answers edited by Truong-Son N.

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• For the cell #"Cd"|"Cd"^(2+), "NO"_3^(-)||"H"^(+), "ClO"_4^(-), "Cl"^(-) | "C"#...?
  
• #(1)# T/F Do all lipids have a hydrophilic head and hydrophobic tail? #(2)# How is a rate constant related to the Gibbs' free energy of activation, #DeltaG^‡#?
  
• What is the major difference between a cyclic hemiacetal and a cyclic acetal?
  
• How many electrons are in a neutral lithium atom?
  
• How does uncertainty apply to chemists?
  
• Nitration of the aromatic ring of 4-methoxyacetophenone yields only one product. What is that product and how can you account for its formation?
  
• What is an orthogonal matrix?
  
• Why is density a useful property to know when one wants to identify a substance?
  
• What is the product of the oxidation of a ketone?
  
• What is the IUPAC name ?
  
• Why are aromatic aldehydes less reactive than aliphatic aldehydes?
  
• Why is the reaction of alkanes with iodine thermodynamically unfavorable?
  
• Why is #"AlCl"_3# a Lewis acid? What happens to its geometry after bonding with another atom?
  
• How can I explain the bromination of alkanes?
  
• What is the difference between aryl and alkyl phenyl?
  
• What is the product of the thermal decarboxylation of dimethylpropanedioic acid (dimethylmalonic acid)?
  
• What is the correct name for #N_2O_5#?
  
• Question #45cd0
  
• What is the mechanism for synthesis of tetraphenylcyclopentadienone?
  
• What is the electron configuration of chromium?
  
• In a second order reaction, the concentration of #A# has dropped to #"0.020 M"# in one hour. If the initial concentration of #A# is #"0.050 M"# and that of #B# is #"0.080 M"#, what is the rate constant? What then is the half-life, if #[B]# is held fixed?
  
• Why is the Bohr model obsolete and what can it still be used for?
  
• What is the Integral of #(x+1)/x dx#?
  
• Explain a single-replacement reaction with an example?
  
• In a chemical reaction, what is the mass of the product ?
  
• Why is biphenyl formed as a by-product in a grignard reaction?
  
• How do you calculate the electronegativity of a molecule?
  
• How can electronegativity be measured?
  
• What electron configuration represents an atom in the excited state?
  
• Why is the enthalpy of formation of oxygen zero?
  
• A gas is contained in a cylinder with a pressure of 120kPa and is initial volume of 0.66. How much work is done by the gas as it expands at constant pressure to twice its volume, or is compressed to one-third its initial volume?
  
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