Answers created by Truong-Son N.

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• How can I solve thermochemistry changes of state/phase problems?
  
• How can I enter the text file with data into Excel?
  
• What is the equation of the tangent line of #f(x)=x^2-2/x# at #x=1#?
  
• Why is cyclopropane much more reactive than cyclohexane?
  
• How can I draw an endergonic reaction in a potential energy diagram?
  
• What is the molecular formula for hexane, cyclohexane, and toluene?
  
• What do you get when you react benzaldehyde and acetophenone with a base?
  
• What is the difference between tautomerization and resonance?
  
• What is an example practice problem involving a solvent?
  
• In the following acid-base reaction, how would you identify the acid, base, and their conjugate acids and bases: NH4+ + HCO3- --> NH3 + H2CO3?
  
• How do you draw keto-enol tautomerization and enamine tautomerization mechanisms?
  
• What is the advantage of alkylating using enamines instead of the enolate counterpart?
  
• What are all the relevant extensive and intensive thermodynamic quantities?
  
• What is an ionization isomer?
  
• Is styrene considered aromatic?
  
• Why does toluene have a lower pka than benzene?
  
• What are the 7 ketones with formula C6H12O?
  
• What is the mechanism reaction of ketone with alcohol to form hemiketal?
  
• What is the major difference between a cyclic hemiacetal and a cyclic acetal?
  
• What is a dilation, or scaling around a point?
  
• What is an example of an acid-catalyzed alkoxylation?
  
• What is the difference between a resonance structure and a resonance hybrid structure?
  
• What is the approximate molecular weight of hemoglobin?
  
• What does the hemoglobin in a healthy adult, not possessing the sickle cell trait, consist of?
  
• What is an example of an amino acid without a chiral carbon?
  
• What are elimination reactions?
  
• What are major resonance structures?
  
• How would you draw the product of the hydrogenation of ethyne?
  
• How would you convert an aldehyde to a ketone?
  
• How can I approximate the binding affinity #K_D# of an enzyme #E# (that follows Michaelis-Menten kinetics) to a substrate #S#?
  
• Are bubbles an indicator of a chemical reaction?
  
• What is the bond angle in a water molecule?
  
• Does #pi^2# have any physical meaning?
  
• How can I calculate wavelength given frequency?
  
• What is the difference between glucose and glycogen?
  
• What is cyclic acetal?
  
• How do you alkylate an aldehyde?
  
• How would you convert a ketone to an aldehyde?
  
• Would cyclohexanone be a methyl ketone?
  
• The area of a square is 81 square centimeters. What is the length of the diagonal?
  
• How many chiral centers does estrogen have?
  
• How are the Pythagorean Theorem and the Distance Formula related?
  
• What general guidelines should I follow to ask more about my posted question?
  
• Why is a trapezoid a quadrilateral, but a quadrilateral is not always a trapezoid?
  
• What is the Endpoint Formula?
  
• What is the difference between acetal and ketal ?
  
• Why is AlCl3 a lewis acid ?
  
• How would you make a ketone from the aldehyde: cyclohexanecarbaldehyde?
  
• Is pyridine an aromatic compound?
  
• Is B(OH)3 a lewis base?
  
• Why do intermolecular forces tend to attract?
  
• What amino acid has an aromatic ring in its side chain?
  
• What is #int_-oo^oo 3/x dx#?
  
• What is the difference between heat capacity and specific heat?
  
• Why are catalysts not consumed in the reaction?
  
• What is #int ln(lnx)/xdx#?
  
• Alkyl halides react with excess ammonia to give what?
  
• What is an example of a wavelength calculations practice problem?
  
• What are the molecular orbital configurations for #N_2^+#, #N_2 ^(2+)#, #N_2#, #N_2^-#, and #N_2^(2-)#?
  
• What is the mass percent of #"Cl"# in #"CCl"_4#?
  
• What is the Maclaurin series of #f(x) = sin^2(x)#?
  
• How do you go from chloroform to methylacetylene in as few steps as possible?
  
• Combustion analysis of toluene, a common organic solvent, produces 2.93 mg of #CO_2# and .685 g of #H_2O#. The molecular mass is 46 g/mol. If the compound contains only carbon and hydrogen, what is the molecular formula?
  
• What is the Maclaurin series of #f(x) = cos(x)#?
  
• How do you use the double angle or half angle formulas to simplify #6cos^2 x - 3#?
  
• What is the difference between organic chemistry and biochemistry?
  
• If the substrate is primary, can we rule out SN1 and E1 entirely?
  
• Why is infrared spectroscopy a non-destructive technique?
  
• How do you look at a #v_0# vs. #[S]# curve (#S = "substrate"#) to find the first-order and zero-order regions? How do you find #v_(max)# and #K_M# from this curve?
  
• I do not know what antibonding means and why those types of molecular orbitals are highly energetic. Please explain me with easiest way so that I can understand?
  
• How does k affect Gibbs free energy?
  
• What are the product(s) for the #"S"_N1# reaction of 2-iodo-3-methylbutane with ethanol?
  
• How do you find the length of the curve defined by #f(x) = x^2# on the x-interval (0, 3)?
  
• What is the Lewis structure of CO?
  
• Why does the Bohr model work perfectly for only hydrogen?
  
• What is the approximate mass of one water molecule?
  
• Why is enthalpy a state function?
  
• How does entropy of mixing relate to solubility?
  
• Is there a chain rule for partial derivatives?
  
• How do you find a power series representation for #ln(8-x)# and what is the radius of convergence?
  
• How would you write the equation of the electron affinity of S-?
  
• Why is enthalpy of formation negative?
  
• What is the product of the following ??? 4-methyl-3-hexanone with #"SH"-"CH"_2"CH"_2-"SH"#
  
• How does the collision theory explain reaction times?
  
• Find the mass of #"2.0 L"# of helium gas at STP? The molar mass is #"4.002602 g/mol"#.
  
• What is the difference between an enantiomer and a diastereomer ?
  
• What is Balmer Series ???
  
• What is the HOMO-LUMO gap and how does it change the properties of a substance?
  
• How do you find a power series representation for #ln(5-x) # and what is the radius of convergence?
  
• If my neighbor plays loud music, how do the frequencies behave through walls?
  
• Show that #(2cos^2(x/2)tanx)/(tanx) = (tanx+cosxtanx)/(tanx)#?
  
• How do I calculate the actual yield? Isn't it what I "should have gotten" based on my experiment?
  
• Writing [content]|_(a)^(b) gives a Math Processing Error?
  
• How do you evaluate #int 1/x^2# for [-1, -1/2]?
  
• How do you find the integral of #xarctanxdx#?
  
• How many mols of #"Cu"# are in #4.5 xx 10^22 "atoms"#?
  
• Why are alkynes less reactive than alkenes in electrophilic addition reactions?
  
• Is the dissociation energy of fluorine low?
  
• What are some examples of the properties of bases?
  
• How can I interpret a regression statistics table in Excel?
  
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