Answers created by Truong-Son N.

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• How do you find the sum of #-10-3i# from i=1 to 15?
  
• Why are #s# orbitals shaped like spheres but #p# orbitals shaped like dumbbells?
  
• At absolute zero, all particle motion does what?
  
• Can anyone help me with these mechanisms for the formation of spiro heterocycles?
  
• Why are the subscripts in a chemical formula whole numbers (for example, #N_2O_5# instead of #NO_2.5#)?
  
• What is a solution to the differential equation #dy/dy=sqrt(1-y)#?
  
• What notes are in the b harmonic minor scale?
  
• How do you measure density with the greatest precision?
  
• How do you multiply # (1-i)(-4-i) # in trigonometric form?
  
• Consider the letters in the word chemistry. Use them to make as many word "compounds" as is possible with 9 elements. How is an element different from a compound?
  
• How do you write a chemical abstract?
  
• How do you evaluate the integral #int 1/(1+x^2)dx# from 0 to #oo#?
  
• Which is the stronger lewis acid Cu+ or Cu2+?
  
• What is the relationship between quantum mechanics and computational chemistry?
  
• Can someone lend me a hand in explaining sig figs involving different units?
  
• When the volume #V_1# of a gas is halved at constant pressure, what is its new temperature if it began at #0^@ "C"#?
  
• What is the pH after mixing the following?
  
• What amount of heat is required to melt #"300 g"# of ice at its freezing point if the enthalpy of fusion is #"6.02 kJ/mol"#?
  
• Question #1ece6
  
• Am I doing this right? What mass of #"HCl"# reacts with #"3.26 g"# of #"Mg"("OH")_2#?
  
• Does it matter if you spray a bit of water at the tip of your burette when titrating strong base into strong acid, i.e. does it change the equivalence point?
  
• What is the meaning of "it is safe to say"?
  
• If the rate of change in #x# is #"3 s"^(-1)#, and #(dy)/(dx) = 5#, what is the rate of change in #y#? Is #y# changing faster than #x# or vice versa?
  
• What is one property of neon?
  
• If for an ideal gas its volume is compressed by a factor of 3, and the gas has cooled down as a result, by what factor is the pressure changed?
  
• Give the form of the rate law for this reaction?
  
• # lim_(n->oo)(1+1/n)^n = # ?
  
• Missing item would complete this alpha decay reaction? #"_98^251Cf# #-> ##"_96^247Cm + ?#
  
• How can I improve my accuracy and precision in lab measurements?
  
• How do you add a hydroxyl group to an alkyl chain of a carboxylic acid?
  
• Write the rate law for this reaction, and give the numerical value of the rate constant?
  
• How do you solve #e^sinx=1# in the interval [0,360]?
  
• Ductile metal means it can be stretched into wired. So is it also correct to say that MORE DUCTILE means MORE ELASTICITY?
  
• How many valence electrons does #"Cr"# have?
  
• What is the first law of thermodynamics in simple terms?
  
• Why do chemists use clamps and ring stands?
  
• What is the distance an electron is from a proton?
  
• Some questions appear to ask for same explanation/concept, for example about SYNAPSE. Is there any provision for readers on Socratic.org to find previously answered questions on same topic when they submit their query?
  
• The sum of two numbers is 88. The second number is three times as large as the first number. What are the numbers?
  
• At what temperature would 250 mL water boil? 1000 mL? Is the boiling point an intensive or extensive property?
  
• Question #bc89d
  
• What is the tool that scientists commonly use to measure liquid volume?
  
• How does sodium amide react with 3-bromopyridine? Show the mechanism.
  
• What is the molar specific heat capacity of ammonium chloride?
  
• How to convert #"433 kg"# to #"mg"# in scientific notation?
  
• What is the antiderivative of # lnx/x^2#?
  
• Find the freezing point (in #""^@ "C"#) for a solution consisting of #"60.0 g"# water and #"40.0 g"# ethylene glycol?
  
• Question #e1d2a
  
• How many electrons would have to be removed from a coin to leave it with a charge of #+1.6 xx 10^-7# C?
  
• Help with the following questions???
  
• For real gases, how does a change in pressure affect the ratio of PV to nRT?
  
• What is the compound in MgS?
  
• Lithium chloride (#LiCl#) is what type of bond?
  
• What is the element with symbol Na?
  
• How do you simplify #-7y^0# and write it using only positive exponents?
  
• What element has the symbol Ag?
  
• What does #"X"# represent in the following symbol: #""_35^80"X"# ?
  
• After the second equilibrium was reached a student added an unknown amount of HBr gas. He found that the concentration of H2 gas at equilibrium increased by 0.050 M. How much HBr gas did the student add to the system?
  
• How many sigma and pi bonds are in benzene?
  
• At what temperature are Celsius and Fahrenheit equal?
  
• Why is the energy ordering of the #pi# and #sigma# orbitals made from the #2p# atomic orbitals switched going from #"N"_2# to #"O"_2#?
  
• What is the difference between a law and a theory?
  
• Question #bf3b9
  
• How many mols of aluminum atoms are in #1.42 xx 10^24# atoms?
  
• Is #f(x)=x^2e^x # increasing or decreasing at #x=1 #?
  
• Complete the reaction: #HCN + 2H_2O -> ?# Also, how is oxamide prepared? What is the reaction for its preparation?
  
• How many grams are in 74.0 mg?
  
• For the reaction #"N"_2"O"_4(g) rightleftharpoons 2"NO"_2(g)#, at what temperature does #K_c# numerically equal #K_p#?
  
• How do you find the limit of # (x^3 - x) / (x -1)# as x approaches 1?
  
• How do you simplify #-2.7times 3.9#?
  
• What does 1 milliliter of water has a volume of?
  
• Can anyone explain the concept of derivatives?
  
• What is a node when it comes to electron density, waves, and wave functions?
  
• Without using Wolfram Alpha, evaluate #log_10(y) = -138.265#? The answer is not #0#.
  
• How do I calculate the new pressure of liquid water using its isothermal compressibility #kappa# and expansion coefficient #alpha#?
  
• How do I convert #"35.0 yd"# to #"nm"#?
  
• Why is the ideal gas law used?
  
• Question #1c6ee
  
• Help me explain #"S"_N1# reactions? I was trying to explain it to my daughter.
  
• The sum of the squares of three numbers is #116#, and the ratio of these numbers is #2:3:4#. What is the largest number?
  
• How is the speed of a chemical reaction related to the spontaneity of the reaction?
  
• What is the Cartesian form of #(-64,(5pi)/12)#?
  
• What is the heat of formation of water vapor?
  
• How do you find the derivative of #y = 2e^x#?
  
• How do you find the maximum value of #y = -2x^2 + 36x - 177#?
  
• How do you find the indefinite integral of #int arcsin x ^2dx#?
  
• Which of the following is a #2p# orbital?
  
• How do you find the solutions to #sin^-1x=tan^-1x#?
  
• How can you tell the rate determining step?
  
• What percent of 50 is 4?
  
• What is the mass concentration of #"0.05 N"# #"HCl"#?
  
• If a rectangular area is required to have a perimeter of #"100 m"#, what dimensions maximize the area?
  
• What is the arrangement of atoms at the peak of an energy barrier?
  
• How do you integrate #int4sec4x*tan4x*sec^4 4x# using substitution?
  
• How do I do this integral? #int sin^3x cos^2x dx#
  
• What is the range of #y = 3x^2 - 7#?
  
• What is the derivative of #y=x^(x-1)#?
  
• 1 bromo 3 clorocyclobutane + Metallic sodium = ? ( the medium of reaction is dioxane )?
  
• Do we have to draw resonance structures?? What's even the point?
  
• What is the condensed structural formula for toluene with bromine?
  
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