COLLIGATIVE PROPERTIES

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

Thermodynamics - Chemistry 1

(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

Thermodynamics - Chemistry 1

(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.

Radiation, Quanta, and Atoms

(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

Radiation, Quanta, and Atoms

(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

Radiation, Quanta, and Atoms

(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

Radiation, Quanta, and Atoms

4. Write electron configurations and count the number of unpaired electrons in: O, Si, Ni, I, Ir, Bi, Gd

Thermodynamics - Chemistry 1

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.

In one experiment, 0.780 g Nb (s) was sealed in a 28.0 mL glass tube at 25°C under 6.33 atm of hydrogen gas, H2.

In one experiment, 0.780 g Nb (s) was sealed in a 28.0 mL glass tube at 25°C under 6.33 atm of hydrogen gas, H2. After reacting with the hydrogen for one week, all of the niobium had been converted to niobium hydride, NbH. Calculate the final pressure of hydrogen gas in the system at 25°C.