Answers edited by Truong-Son N.

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• How do you calculate Gibbs free energy of mixing?
  
• Is #"CO"# neutral??
  
• Is the molar volume a physical or chemical property?
  
• How do I distinguish these multiplets in proton NMR?
  
• How do you balance this chemical equation: #"Mg"_3"B"_2 + "H"_2"O" -> "Mg"("OH")_2 + "B"_2"H"_6#?
  
• How do you calculate the temperature of the gas at this new pressure?
  
• Explain the difference between 1,2- and 1,3- chelating amines? Show example.
  
• Does formal charge affect polarity?
  
• What is the electron configuration of iron?
  
• How many sigma and pi bonds are in xylene?
  
• What determines the probability pattern of an orbital?
  
• Why is the rate determining step slow?
  
• How do you predict the hybridisation of an atom in a molecule?
  
• How do you get the mass with volume and no density?
  
• Which of the following coordination compounds have geometric isomers?
  
• Why is the IR spectrum inverted?
  
• What oxidation state is iron in hemoglobin?
  
• P.S./Chem.–Aug. ’15 40 Which statement explains why a C–O bond is more polar than a F–O bond?
  
• What does sp2 and sp3 hybridization mean?
  
• What are tarry oxidation products?
  
• How do you find the oxidation number of #SO_4^(-2)#?
  
• What mass of #""^(55) "Cr"# must be delivered in #"mg"# to a patient if the total drug transport time is #"12 hours"# and the minimum dosage needed is #"1.0 mg"#? The half-life is #"2 hours"#.
  
• Does basicity always vary inversely with ionic atomic radius???
  
• Why can't I balance this? #"CaOH" + "H"_2"SO"_4 -> "CaSO"_4 + "H"_2"O"#
  
• Can anyone quote the melting points of all the elements?
  
• In the reaction of 2-methylcyclopentadiene in #"HBr"#, which product is formed? (Hint: it should be the 1,4-addition product.)
  
• What is an arrhenius base?
  
• Silver iodide, #AgI#, has a Ksp value of #8.3 xx 10^-17#. What is the solubility of #AgI#, in mol/L?
  
• When I made my NMR spectrum, I forgot to print it in #"Hz"# as well; how do I get coupling constants in #"Hz"#?
  
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