Answers edited by Truong-Son N.

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• Vessel A contains O2 gas at 25C and 1.0 atm. Vessel B contains CO2 gas at 10.0C and 0.75 atm. Both vessels have the same volume. Answer each of the following?
  
• The rate constant of a first order reaction is #4.60 xx 10^(-4) "s"^(-1)# at #350^@ "C"#. If the activation energy is #"104 kJ/mol"#, what is the temperature at which the rate constant is #8.80 xx 10^(-4) "s"^(-1)#?
  
• Why do we use disodium EDTA?
  
• What is an example of a tetrahedral bent molecule other than water?
  
• What is meant by the term 'mole' (and its unit, 'mol') in chemistry? (Hint: not a small burrowing mammal)
  
• Could you help me identify the relative pronoun and the noun or pronoun to which it relates?
  
• What atoms can exceed an octet?
  
• Do elementary row operations change eigenvalues?
  
• How do you calculate the percent composition of water?
  
• How might one draw atomic and molecular orbital diagrams?
  
• How do you evaluate # e^( ( pi)/2 i) - e^( ( 19 pi)/12 i)# using trigonometric functions?
  
• How many sigma/pi bonds are in the aspirin structure?
  
• When an adduct is formed from Diels Alder reaction of maleic anhydride and furan, what does the adduct decompose to at its melting point?
  
• What opens epoxides?
  
• The attachment of a fluoride ion to the boron in #BF_3#, through a coordinate covalent bond, creates the #BF_4-# ion. What is the geometric shape of this ion?
  
• Explain the mechanism of the Tishchenko reaction?
  
• How do I convert from the mass of #"25.9 g Mg"_3"N"_2# to the mass of #"27.7 g H"_2"O"#? The reaction is magnesium nitride reacts in water to form magnesium hydroxide and ammonia.
  
• What is the Bronsted-Lowry acid and base versus Lewis?
  
• In Heisenberg's Uncertainty Principle, is the uncertainty in the position a 2 dimensional, 3 dimensional, or 4 dimensional?
  
• Which #d# orbital is specified by #Y(theta,phi) = (5/(8pi))^(1//2) (3cos^2theta - 1)#?
  
• What is an example of an alkene that would react with water to make only one possible alcohol. Why can't your alkene make two different alcohols?
  
• In the arrhenius equation, #k = Ae^(-E_a"/"RT)#, what is the frequency factor?
  
• What class of organic compounds results when cyclopentanone reacts with ethylamine in the presence of trace acid?
  
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