Answers edited by Truong-Son N.

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• Find the mass of #"2.0 L"# of helium gas at STP? The molar mass is #"4.002602 g/mol"#.
  
• How does the collision theory explain reaction times?
  
• Which heats up faster, wood or glass?
  
• Why is enthalpy of formation negative?
  
• Writing [content]|_(a)^(b) gives a Math Processing Error?
  
• Is there a chain rule for partial derivatives?
  
• Is the dissociation energy of fluorine low?
  
• What are some examples of the properties of bases?
  
• What is the HOMO-LUMO gap and how does it change the properties of a substance?
  
• What is the product of the following ??? 4-methyl-3-hexanone with #"SH"-"CH"_2"CH"_2-"SH"#
  
• How many mols of #"Cu"# are in #4.5 xx 10^22 "atoms"#?
  
• What is the difference between an enantiomer and a diastereomer ?
  
• What is Balmer Series ???
  
• If my neighbor plays loud music, how do the frequencies behave through walls?
  
• What happens if the electron density around a nucleus is decreased?
  
• How would you write the equation of the electron affinity of S-?
  
• How can I interpret a regression statistics table in Excel?
  
• What is the dipole moment of water?
  
• How do you write #(x+1)/(1 - x)^2# in a power series representation?
  
• How do you find a power series representation for #ln(5-x) # and what is the radius of convergence?
  
• Why are alkynes less reactive than alkenes in electrophilic addition reactions?
  
• Characterize the IR spectrum of methyl benzoate?
  
• How do you find the integral of #xarctanxdx#?
  
• How are s orbitals different from p orbitals?
  
• Show that #(2cos^2(x/2)tanx)/(tanx) = (tanx+cosxtanx)/(tanx)#?
  
• How do you evaluate #int 1/x^2# for [-1, -1/2]?
  
• What is the eigenvalue of the Hamiltonian?
  
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