Answers edited by Truong-Son N.

• Back to user's profile
• Next
• 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?
  
• If one bullet is fired at #30^@# and another at #60^@# with respect to the horizontal, given the appropriate amount of time for them both to travel as far as they can and hit the ground, what are their respective ranges?
  
• How do I prepare a #"3 M"# #"NaOH"# aqueous solution?
  
• 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?
  
• An equimolar mixture of a weak acid and a strong base has a pH > 7 at the equivalence point. Which of the following describes the reaction that occurs at that equivalence point?
  
• How do you use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region # y = e^ (-x)#, bounded by: #y = 0#, #x = -1#, #x = 0# rotated about the #x=1#?
  
• 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?
  
• How do you use the product Rule to find the derivative of #f(x)=(x^2) + (3 ln x)#?
  
• Given tan x tan y = p and cos(x+y)=q .Show that sin x sin y =(pq)/(1-q) and cos(x-y)= (q(1+p))/(1-p) ?
  
• What uses do products of power series have?
  
• What values of the universal gas constant are often used and when are they used?
  
• How did the Hooke’s law help IR in the position of absorption bands?
  
• Write a stepwise mechanism that shows how a small amount of CH3CH3 could form during the bromination of CH4?
  
• What are the derivatives of these two functions? #ln(sinsqrtx)#, #e^(sqrt(1+x^2))#
  
• Explain how to obtain an NMR spectrum?
  
• What type of hybridization does the central atom in #"SF"_4# have?
  
• What quantum numbers refer to a 4d orbital?
  
• How do you draw a molecular orbital diagram for a diatomic molecule?
  
• Is hydrogen placed above the alkali metals because it is a metal?
  
• Next