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For questions 1-5 below, determine the point group for each of the following molecules, ions and objects. Draw a clear picture of each molecule, ion and object and clearly show or describe all symmetry elements necessary to determine the point group. Remember, only the connectivity of the atoms determines the symmetry, not the bond order or lone-pair electrons. Be very careful that you have drawn the correct structure when required.
You do not need to find all symmetry elements, just those necessary to identify the point group. Drawing symmetry elements is great, but I would expect quite a few to be described in brief words based on your drawings.
1. a) borazine, B3N3H6
b) a paper clip
2. a) a trash can
b) cyanide ion, CN-
3. a) FeCl63-
b) a Pringles® potato chip
4. a) NiCl2H2 (tetrahedral)
b) NiCl2H2 (square planar)
5. a) a dxy orbital (shading counts!)
b) a pz orbital (shading counts!)
Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2CIO2(aq) + 2OH-(aq) --> (aq) + (aq) + H2O(l). If the initial rate of disappearance of chlorine dioxide is 0.230 M/s, what is the in..
A solution of the weak acid formic acid (HCOOH) has a pH of 2.14 when the concentration of formic acid is 0.30M. What is the numerical value of the acid ionization constant (Ka), and what is the percent ionization of the formic acid
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Problem- Which of these electron configurations are for atoms in the ground state. In excited states? Which are impossible
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Photoheterotrophic microorganisms that use photoenergy, but depend on organic matter as a carbon source, are abundant and widespread
What is the pKa for the acid HA if a solution of 0.65 M HA and 0.85 M NaA has a pH of 4.75?
High phosphate levels in water systems may contribute to several environmental problems. One method to gather data for this determination would be to perform a gravimetric analysis to determine the level of phosphorus (P) in an aqueous sample by conv..
A 10 gram sample of the ionic compound NaA, where A is the anion of a weak acid was dissolved in enough water to make 100 ml of solution and was then titrated with 0.1 M HCL
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Ammonia gas decomposes according to the equation:2NH3(g) N2(g)+ 3H2(g) if 15.0L of nitrogen is formed at STP, how many liters of hydrogen will be produced (Also measured at STP)
how long would it take to count 1 billion tinyinvisible objects from a bottle of these objectsif you couldnt see one
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