(Solved): Experiment 10: Spectroscopy Exercise In this experiment one of the spectral lines of hydrogen was ...

Experiment 10: Spectroscopy Exercise In this experiment one of the spectral lines of hydrogen was observed at 656 nm. Calculate the energy in Joules for one mole of photons associated with this value. What is the transition for this. (10 points) Experiment 1: Measurements 1. Provide the correct number of significant figures and units for the operation below. (4 points) a) (3.8621 g +1.5630 g)-5.98 g = b) (13.602 cm x 0.093 cm x 3.06 cm) = 4.21 cm x 7.654 cm 2. How many decimal places should be written for each of the following instruments used in your Chem 1A lab? (4 points) a) Balances b) Microburetts 3. What is the difference between precision versus accuracy? Explain and give an example. (6 points). Experiment 2: Nomenclature (11 points) Bromine pentafluoride Copper (II) carbonate Antimony triiodide Iron (III) nitride Lithium sulfide Sulfuric acid Sodium hydrogen phosphate Cobalt (II) phosphate SrCl? 2H?O SeCl AgNO3 hydroxide requires 25.00 mL of aqueous acetic acid for neutralization. The mass of the 25.00 mL sample of acetic acid is 25.346 g. 1. Instead of using sodium hydroxide to react with acetic acid many other bases can be used instead. A 0.367 g sample of calcium a) Write an equation for this reaction. (5 points) b) What is the concentration of the acetic acid in the solution? (5 points) c) What is the mass percent of the acetic acid solution? (5 points) Experiment 4: Determination of the Empirical Formula of a Hydrate a) Why is it necessary to heat the crucible several times? Explain. (7 points) b) How is the law of conservation of mass applied in this experiment in finding the empirical formula of the hydrate? Explain. 1. a) Write an equation for the dissociation of K?CrO4 in water. (3 points) b) If you are given a 0.05M solution of K?CrO4, what is the concentration of each type of ion in solution? (4 points) c) Which substance would have the greatest conductivity: HOCH?CH?OH or NaOH? Explain. (3 points) d) In the experiment that you performed you had equimolar solutions of AICI3, NaCl, and CaCl?. You made a plot of conductivity versus volume of solution. Which solution generated the greatest slope? Which solution generated the lowest slope? Explain. (5 points) Experiment 11: Lewis Theory/ Molecular Geometry Clearly draw the Lewis Structure in the box provided, indicate the name of the electron and molecular geometries. Draw resonance structures where necessary. (20 points) Lewis Structure Electron Group/Domain Geom. Name Molecular Geom. Name Molecular Polarity (Polar/NonPolar) a) NO+ b) CBr4 c) XeF',* d) ICI,F e) SeCl?