Answers created by Truong-Son N.

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• Characterize the IR spectrum of methyl benzoate?
  
• How do you write #(x+1)/(1 - x)^2# in a power series representation?
  
• What happens if the electron density around a nucleus is decreased?
  
• When you subtract the atomic mass from the atomic number what do you get?
  
• What is the derivation for the half life of a second order reaction with: (i) equal concentration of reactants for the reaction 2A→product (ii) unequal concentration of reactants for the reaction A+B→product?
  
• When do you use gas chromatography and mass spectrometry (GC–MS) at the same time?
  
• Why are peptide bonds important for the secondary structure of proteins?
  
• What do you think of our great answer criteria?
  
• How do enzymes increase reaction rates?
  
• What is the Heisenberg Uncertainty Principle?
  
• Why are the tangents for 90 and 270 degrees undefined?
  
• If #(dx)/(dt) = "8 min"^(-1)# and #y = 1/x#, then what is #(dy)/(dt)# at #x = 2#?
  
• Question #6e767
  
• Why does the carbonyl oxygen get protonated instead of the ether oxygen in the acid-catalyzed hydrolysis of amyl acetate?
  
• What is the structure of #"C"_2"H"_3"O"_3#?
  
• Determine the mean activity coefficient and mean activity of a #"0.004 molal"# of #"Ba"("HCO"_3)_2#?
  
• What is another name for an aldose that contains 6 carbons in its chemical formula?
  
• How do you prove that momentum and position cannot be observed simultaneously as per Heisenberg's Uncertainty Principle?
  
• How do you do the taylor series expansion of #arctan(x)# and #xsinx#?
  
• What is the area under the curve of #x - x^2# in the positive #(x,y)# region?
  
• How do you rank nucleophiles?
  
• When might it be better to report percent changes in mass, instead of absolute changes in mass?
  
• How do you find the indefinite integral of #int 2x ln(x^2 - 8x + 18) dx#?
  
• What is chain propagation and termination in free radical halogenation?
  
• How do you find the integral of #int sin(x)*tan^-1(x) dx# from -12pi to 10pi?
  
• Why is the #pi# bond between the two central carbon atoms destroyed halfway through the rotation from cis- to trans-2-butene?
  
• How to do taylor series expansion of #e^(-x^2"/2")#?
  
• What is the final height in meters a rising object reaches if its initial velocity is #"50 m/s"# and it takes #"7 s"# to get there?
  
• Which heats up faster, wood or glass?
  
• Community discussion: what makes an answer great on Socratic?
  
• When iron(II) sulfate dissolves in water, does iron(II) form a complex ion with water surrounding it?
  
• Why does freezing point depression necessarily occur when adding a nonvolatile solute to a solvent?
  
• What is mathematics?
  
• Define the properties of an ideal gas?
  
• How do you identify stereocenters on a complex molecule?
  
• How can I determine whether an E or an SN reaction will occur?
  
• How do you evaluate #int (1) / (sqrt(1 + x))# for [0, 3]?
  
• How do you multiply #(4sqrt5 + 3sqrt5)(2sqrt5 - 4sqrt2)#?
  
• Does a leaving group affect the reaction rate?
  
• Can you give an example taking an integral by parts?
  
• Question #b1481
  
• What are some examples of valence electrons?
  
• How can you find the taylor expansion of #sin x# about x= 0?
  
• Cyclohexene to ethyl cyclohexyl acetylene?
  
• Which elimination reactions, E1 or E2, depend on the concentration of the substrate?
  
• What is a beat? How does it relate to syncopation?
  
• Which type of spectroscopy is more powerful?
  
• What is X-ray crystallography?
  
• Question #45ac8
  
• What is the limit of #(2x+3)/(5x+7)# as x goes to infinity?
  
• If substitution of a nucleophile has happened, does that mean it is an E or an SN reaction?
  
• When does hydroboration–oxidation in alkyne occur?
  
• What is asymmetric epoxidation?
  
• How do I start from a stock solution to prepare an aqueous solution of #"HNO"_3# that is #5"% w/w"# if the starting concentration is unknown and presented in a range?
  
• What is the mol ratio of #"N"# to #"H"# in hydrazine?
  
• Is it possible to distinguish between first and second-order reactions based on a #[A]# vs. time graph?
  
• How do you balance the reaction #"NO" + "O"_2 -> "NO"_2#?
  
• What are the common definitions of an acid? How can #"H"_2"CO"_3# and #"HCO"_3^-# both be acids if #"HCO"_3^-# is a conjugate base, and what does it mean for the #"pH"# of a #"HCO"_3^-# solution??
  
• How can I interpret complicated NMR spectra?
  
• How are carboxylic acid derivatives named?
  
• What is the difference between reversible and irreversible work?
  
• Is there a way to write #rightleftharpoons# with something above and below, while still keeping #rightleftharpoons# on the same line as the rest of the text? This would be useful for equilibrium reactions and kinetics.
  
• For the function given by #f(x) = {(1, x=1),(sin(x-1), "otherwise"):}#, find the Taylor series?
  
• How do you find the Maclaurin series for #e^(x^2)# ?
  
• How do you use the steady state approximation to determine the observed rate constant for an overall reaction, when knowing its mechanism and its individual rate constants?
  
• Are all homogeneous mixtures also solutions?
  
• How do you find a power series representation for #f(x) = (x) / ((1-x)^2)# and what is the radius of convergence?
  
• How can you find the number of neutrons in an atomic isotope? What is the difference between mass number and atomic mass?
  
• Why am I getting this wrong? How many mols of molecules are in #8.90 xx 10^47 "molecules"#? I am getting #1.47 xx 10^(70)#.
  
• How do you find the integral of #int tan^n(x)# if n is an integer?
  
• How can I create NMR from molecules?
  
• What is the common oxidation state of oxygen atom?
  
• If the density I got for a metal is #"11.2 g/cm"^3#, what metal have I got?
  
• What is the derivative of #2^sin(pi*x)#?
  
• What is #lim_(x->oo) (sqrt(xsqrt(x+sqrt(x)))-sqrt(x))# ?
  
• According to the Heisenberg uncertainty principle if the position of a moving particle is known what other cannot be known?
  
• What is the molecular orbital theory?
  
• What is the limit of #(x-1)(x-2)(x-3)(x-4)(x-5)/(5x-1)^5# as x goes to infinity?
  
• Is there a difference between #d/(dx)[f(x)]# and #(df(x))/(dx)#?
  
• What are the inflection points of #f(x) = (x^2)(e^18x)#?
  
• How do you solve #4.5xx10^9 = -1.8xx10^10 + lim_(N->40) sum_(n=1)^(N) x/(1.04n)#?
  
• What volume of an aqueous solution with #"pH"# #9# can you use to neutralize an aqueous solution with #"pH"# #2#?
  
• What are the coupling constants (#J#)?
  
• How do you find a power series representation for #f(x)=1/(1+x)^3#?
  
• How does tandem mass spectrometry work?
  
• Why is cyclopropane unstable?
  
• How do you find the indefinite integral of #int sin(5x)sin(8x)dx#?
  
• Question #5c847
  
• How to sketch graph of f(x)= 1/(x²-4x)?
  
• What is the overall charge of the Pro-Met-Phe-Ser-Glu-Leu polypeptide at pH #7.2#? I've drawn it, and I think it's #-1#, but I'm not 100% sure.
  
• What is the square root of 45?
  
• How can I represent enthalpy in a potential energy diagram?
  
• Whats the square root of negative 8 times the square root of negative 10?
  
• How do you find the integral of #int (1/(1+x^2) ) dx# from negative infinity to 0?
  
• Why are tertiary alcohols very inactive in acid catalyzed hydro-alkoxy additions?
  
• What is the domain and range for #f(x) = (4-2x) /5#?
  
• Help with these sig figs adding/subtracting problems?
  
• How can I identify functional groups?
  
• What are some common mistakes students make with synthesis reactions?
  
• Question #36647
  
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