Please help me with Kf and deltaTf calculations for a pure solvent, a solvent with various amounts of ethyl acetate and an unknown solvent (need molar mass of this). Lab results for freezing/melting point (f/m pt) of pure cyclohexane: 25 mL cyclohexane, All three trials yielded 8.0 degrees. Lab results for freezing/melti ...continues
1. I need help with the standard deviation/percentage error in the attached lab experiment. 2. Also need help graphing for the ethyl acelate and unknown solvent -- plotting negative delta T versus the total volume of solute that was added (2 graphs) and calculation of the slopes 3. I am not certain but I believe this ques ...continues
(See attached file for full problem description with proper symbols.) --- 1. Citric acid is a triprotic acid (represented by H3Cit). A student mixes together the following solutions in a styrofoam coffee cup: • 5.00 mL of 0.64 M citric acid • 45.00 mL of 0.77 M NaOH The two solutions start at a temperature of 26.0°C, ...continues
(See attached file for full problem description with proper symbols) --- 3. You mix together the following solutions in a coffee-cup calorimeter: 100.0 mL of 0.200 M CsOH 50.0 mL of 0.400 M HCl Both solutions start out at 22.50°C, and the final temperature after reaction is 24.28°C. The densities of the solutions are a ...continues
Coordination chemistry problems
Attached are the problems, and 3 pages of the answers I have obtained, I have worked them out as complete as possibe showing how I attained my answer. I would like detailed solution on how to correctly solve any that I may have gotten wrong, so that I can learn how to solve inorganic problems properly.
(See attached file for full problem description with proper symbols) --- 1. A hydrogen atom in a certain excited state has its electron in a 5f subshell. The electron drops down to the 3d subshell, releasing a photon in the process. a) For each of these subshells, give the n and l quantum numbers, and give the range of po ...continues
(See attached file for full problem description) --- 2. For each of the following orbitals, provide a perspective sketch of the orbital in the Cartesian x, y, z coordinate system. Determine the number of angular nodes and the number of radial nodes in the orbital, and describe where those nodes fall. (For instance, the 2px o ...continues
(See attached file for full problem description) --- 3. a) Write the electron configuration of xenon. You may use the previous noble gas. b) Xenon can absorb energy and become "excited" into a higher energy state: Xe (g) Xe* (g) (This process requires 801 kJ/mol.) The excited xenon atom, Xe*, is simila ...continues
4. Write electron configurations and count the number of unpaired electrons in: O, Si, Ni, I, Ir, Bi, Gd
Given the following data: Initial mass of nut: 0.9873 g Final mass of residue: 0.4568 g Mass of water in can: 249.7 g Initial Temperature: 24.8 degrees Celsius Final Temperature: 33.2 degrees Celsius Calculate the heat released, in calories per gram of oil, for this nut.
