Answers edited by Truong-Son N.

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• Are there any geometric isomers of the stable octahedral complex #[Co(NH_3)_3(NO_2)_3]#? If there are, how many?
  
• What tells us where we can find electrons? Why are these probability distributions the way they are? Can an electron ever stop spinning or moving?
  
• The gas inside of a container exerts #"84 Pa"# of pressure and is at a temperature of #"320 K"#. If the pressure in the container changes to #"64 Pa"# with no change in the container's volume, what is the new temperature of the gas?
  
• Is Lithium hydride, ionic or covalent bonding?
  
• If we have #"24.9 L"# of liquid ethanol, with a density of #"789 g/L"# at a certain temperature, how many mols do we have?
  
• What is the half life decay rate formula?
  
• How can I balance this chemical equations? Aluminum and hydrochloric acid react to form aluminum chloride and hydrogen gas.
  
• What is diamagnetism?
  
• What is the norm of #<1,-3,-2 >#?
  
• How many moles of sodium hydroxide are in 500 mL of a 2.0 M #NaOH# solution?
  
• The volume of a gas is 93 mL when the temperature is 91°C. If the temperature is reduced to 0°C without changing the pressure, what is the new volume of the gas?
  
• Given the following information, should we expect to be able to assign the C-O bonds to individual peaks, and if so, which mode is associated with which band? Why?
  
• How do you calculate the pre-exponential factor from the Arrhenius equation?
  
• Why does ideal gas law fail at times?
  
• Explain why the trifluoromethyl (#CF_3#) group is meta directing in electrophilic aromatic substitution. What would you expect #CF_3# to be activating or deactivating? Why? Can some one PLEASE help me!!!!! Thanks?
  
• Why is #3^@ > 2^@ > 1^@ > "methyl"# the trend for reactivity in an #"S"_N1# reaction but #3^@ < 2^@ < 1^@ < "methyl"# for #"S"_N2# reactions?
  
• Write a short note on oxidation of alcohols. What are the different reactions involved, with suitable examples?
  
• Is #B_2# diamagnetic or paramagnetic?
  
• One #"mol"# of an ideal gas, initially at #"300 K"#, is cooled at constant #"V"# so that #"P"_f# is #1/4 "P"_i#. Then the gas expands at constant #"P"# until it reaches #"T"_i# again. What is the work #w# done on the gas?
  
• What is the atomic number of the yet undiscovered element in which the 8s and 8p electron energy levels fill?
  
• What are some examples of inorganic chemistry?
  
• What are the sigma and pi bonds in cumulene?
  
• Can primary alcohols be oxidized to form either aldehydes or ketones?
  
• How do you solve the Arrhenius equation for activation energy?
  
• Draw the Lewis structure of #"HXeSH"# and describe the electron and molecular geometry around the central atom according to VSEPR theory?
  
• Is methylcyclohexane chiral?
  
• What is the oxidation numbers of each element in the #[Fe(C-=N)_6]^(2+)# complex?
  
• Question #06eb8
  
• How do you solve the Arrhenius equation?
  
• How do you simplify #sqrt(6889)#?
  
• A 5 letter word for what sodium does to bond with chlorine to form table salt??
  
• List and describe the gas laws?
  
• Which solution has the higher vapor pressure? #(A)# A solution that boils at #100^@ "C"# #(B)# A solution that boils at #-33^@ "C"#
  
• Why can only two electrons occupy each orbital?
  
• What happens to the atomic mass as you go down each group/family?
  
• Is #C_2^+# paramagnetic or diamagnetic? Is #C_2# paramagnetic or diamagnetic?
  
• How come higher the value of Henry's Law constant, the lower is the solubility of a gas in a liquid?
  
• Why is vanillin achiral?
  
• Which type of bonding can be found in #"As"("C"_6"H"_5)_3#?
  
• For a solution containing initial concentrations of #"0.0500 M"# #"HNO"_2# and #"0.0100 M HClO"#, what is the #"pH"#?
  
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