Answers created by Truong-Son N.

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• How do you use the Change of Base Formula and a calculator to evaluate the logarithm #log_2 15#?
  
• What's the difference between: undefined, does not exist and infinity?
  
• What is 40 times the square root of 6?
  
• What is the skeletal structure for #C_6H_11NO#?
  
• Question #5dcd6
  
• What does v=dx/dt means?
  
• What is the sum of all odd numbers between 0 and 100?
  
• Which functional groups would form hydrogen bonds with neighbouring molecules?
  
• Shouldn't silver be unreactive? It forms a #+1# cation doesn't it?
  
• How do you find a power series representation for # (1+x)/((1-x)^2)#?
  
• When do PAHs occur?
  
• Why does the elimination of hydrogen halide (a halogen acid) from an alkyl halide require a strong base?
  
• How do you find the maclaurin series expansion of #1/(1-x^2)#?
  
• How do you multiply #3 / (2 sqrt2) #?
  
• If I only know the mass of one sample of food with a certain amount of Calories, how can I know how many more Calories a larger sample of the same food has?
  
• What is the leaving group in the hydrolysis of tert-butyl bromide with water forming tert-butanol?
  
• What is the pH of pure water at #25^@ "C"# and what is its equilibrium constant for autoionization?
  
• What is the square root of 30?
  
• How do you find the square root of 3.24?
  
• How can I draw possible structures for an ester that has a molecular ion with an m/z value of 74?
  
• Is there a trick to multiplying two-digit numbers by #11#?
  
• A reaction starting with 8.0 g of benzoic acid, excess methanol, and excess phenyl magnesium bromide.What would be the expected theoretical yield of triphylmethanol?? If 5.36 g of triphenylmethanol is end product, what is % yield?Show all calculation.
  
• How do I find the value of Cos 45?
  
• How is infrared spectroscopy used to identify the presence of organic compounds in water samples?
  
• Draw the stepwise mechanism of hydrohalogenation of ethylenecyclopentane?
  
• Does #"H"_4"O"^(2+)# exist?
  
• How do you find hybridization orbitals?
  
• How is equilibrium related to Gibbs' free energy?
  
• How is equilibrium related to Gibbs' free energy?
  
• When using Greater Than symbol to indent, the content that goes after it cannot be commented on or marked helpful/confusing?
  
• Question #22e59
  
• How can I write synthesis reactions in organic chemistry?
  
• How can I report #""^13"C"# NMR data?
  
• What is the derivative of #ln y=e^y sinx#?
  
• The hypotenuse of the right triangle of a vector diagram for R and XC, is it the impedance?
  
• How do you find the arc length of the curve #y = (x^4/8) + (1/4x^2) # from [1, 2]?
  
• How to memorize and understand the mechanism in preparation and reactions of alkene?
  
• What is the structure of #"Si"_3"N"_4#?
  
• What is the difference between note and tone of a sound?
  
• Please let me know about the clear differences b/w Alkaloid and Fatty acid ??
  
• Why is blue light scattered more than red light?
  
• Question #98c93
  
• Question #fb7d1
  
• How do you solve the identity #sqrt3 tan(x) + 1 = 0#?
  
• How proof this answer is right ? ∫ ((1)/((x^2)(sqrt(1+x^2))dx =
  
• What does it mean for an atomic spectrum to be discrete, and how does it relate to energy level spacings?
  
• Is the dividing line between metals and nonmetals where the metalloids lie? What then are the metalloids?
  
• Explain how doping works in semiconductors?
  
• When do you need to balance equations?
  
• What is the law of inertia? How does it apply to static equilibrium?
  
• Question #43909
  
• What is the difference between mass composition and percent composition?
  
• What does R configuration mean?
  
• How to determine bond angles? Give me the answer as if I was 5 years old.
  
• Please let me know why it is necessary to scrupulously oven-or flame-dry the glass used in Grignard reaction? Please write the reaction.
  
• What are examples of orbital overlap for molecules consisting of second-row elements?
  
• What is the purpose of adding sufuric acid at the end of the Gringard reaction??
  
• Write the overall reaction for reaction of methyl benzoate with excess phenyl magnesium brimide in ether, followed by H3O+. ????
  
• Load with a mass if 0.2kg will stretch a spring 0.1m.Spring is stretched an additional 5cm & released.Find the spring constant,period of vibration n f,max acceleration,velocity through equilibrium positions & motion equation?
  
• Why are major resonance forms more stable?
  
• What is the heat of hydrogenation in a hydrogenation reaction?
  
• How to prepare 1-phenyl-3-methyl -2- butanol?? Thank you in advance
  
• How do you find the antiderivative of the function #y=arc cotx#?
  
• What mass is contained in #"75 cm"^3# of a substance whose density is #"620 g/cm"^3#?
  
• A man stands on a crane and throws a water balloon down at at 21 m/s. He finds that it takes 2.4s for the balloon to hit the ground. What is its height one second before it hits the ground?
  
• What is the SMART query for carboxylic acids ???
  
• How do you use substitution to integrate #2piy(8-y^2/3)dy#?
  
• How do you find the derivative of Inverse trig function #y = cos sec^2(x)#?
  
• If #cos(50)=a#, then how do you express #tan(130)# in terms of a?
  
• Why is a pi bond weaker than sigma bond?
  
• What is the derivative of #log(sin^2(x))#?
  
• Determine the first-excited state of scandium?
  
• What is the coefficient of x^2 in the Taylor series for #(1+x)^-2# about a=0?
  
• How do you integrate #sqrt(1+(4cos^2))dx#?
  
• Are nucleophiles Lewis bases? Why?
  
• How do you find what the mass on the spring is if you know the period and force constant of the harmonic oscillator?
  
• What is a corner in calculus?
  
• What is the derivative of #arctan sqrt x#?
  
• How do you integrate ln(x+1)?
  
• What is the difference between the shell method and disk method?
  
• Why do certain atoms emit certain colors of light? How do they get the energy to do so, and what kinds of particles are involved in this process?
  
• What is the length of an arc that has an angle of #100^@# and radius of #"10.0 m"#?
  
• How do you convert 16 revolutions to radians?
  
• Why can we not walk forward in space with no surface?
  
• Two sides of a triangle are 6 m and 7 m in length and the angle between them is increasing at a rate of 0.07 rad/s. How do you find the rate at which the area of the triangle is increasing when the angle between the sides of fixed length is pi/3?
  
• How do you represent molecules in 3D? Does it matter that you draw hashes or wedges?
  
• In general, how are two elements on the same column of the periodic table expected to behave with respect to each other? What might be some differences?
  
• How do you find the volume of the solid generated by revolving the region bounded by the curves y=x^3 and y=x^4 rotated about the y-axis?
  
• Write equations to show how 2,3-dimethylbutane may be prepared from each of the following compounds. (i)an alkene (ii)A grignard reagent (iii)a haloalkane (iv)a sodium alkanoate?
  
• Explane entropy and enthalpy in detail?
  
• Write a stepwise mechanism that shows how a small amount of CH3CH3 could form during the bromination of CH4?
  
• A snowball, in the shape of a sphere, is melting so that the radius is decreasing at a uniform rate of 1cm/s. How fast is the volume decreasing when the radius equals 6cm?
  
• How do you integrate #((4-x^2)^(1/2)) / x^2#?
  
• What are the derivatives of these two functions? #ln(sinsqrtx)#, #e^(sqrt(1+x^2))#
  
• How did the Hooke’s law help IR in the position of absorption bands?
  
• The product of reacting an alkene with #"Br"_2(aq)# is #"C"_2"H"_4"BrOH"#. What is its name? Why is the product NOT a geminal dibromide?
  
• Question #b9d1d
  
• What uses do products of power series have?
  
• How do you use the product Rule to find the derivative of #f(x)=(x^2) + (3 ln x)#?
  
• How does #"AlCl"_3# behave as an acid in the presence of #"Cl"_2# in water? It has no protons... so is it a Lewis acid?
  
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