Assuming that the smallest measurable wavelength in an experiment is 0.570 fm , what is the maximum mass of an object traveling at 745 m ⋅ s^-1 for which the de Broglie wavelength is observable?

When an excited electron in a hydrogen atom falls from n=7n to n=2, a photon of ultraviolet light is emitted. If an excited electron in an He+ ion falls from n=5, which energy level must it fall to (n1) for ultraviolet light of a similar wavelength to be emitted?

Data for Experiment 108- Frequency of Vibration

Frequency and Tension

                                                            Trial 1                         Trial 2

Vibrating Length (L)                               50 cm                         65 cm                    

Number of Segments (n)                           2                                  2

Attached Mass (m)                                  70g                              90g

Linear Mass Density                             0.0015 g/cm             0.0015 g/cm

Actual Frequency                                   120 Hz                         120 Hz

Find the Following. Use the correct number of Significant Figures.

1. Tension ( T=mg) in Trial 1 and Trial 2

2. Experimental Frequency in both trials.

3. Percentage error in both trials.

Fill out schedule D with these Facts

Facts:

"SCHEDULE D (Form 1040) Department of the Treasury Internal Revenue Service (99)" "Capital Gains and Losses ? Attach to Form 1040 or Form 1040NR. ? Information about Schedule D and its separate instructions is at www.irs.gov/scheduled. ? Use Form 8949 to list your transactions for lines 1b, 2, 3, 8b, 9, and 10." OMB No. 1545-0074 "2016 Attachment Sequence No. 12" Name(s) shown on return Your social security number Part I Short-Term Capital Gains and Losses—Assets Held One Year or Less "See instructions for how to figure the amounts to enter on the lines below. This form may be easier to complete if you round off cents to whole dollars." (d) Proceeds (sales price) "(e) Cost (or other basis)" "(g) Adjustments to gain or loss from Form(s) 8949, Part I, line 2, column (g)" (h) Gain or (loss) Subtract column (e) from column (d) and combine the result with column (g) "1a Totals for all short-term transactions reported on Form 1099-B for which basis was reported to the IRS and for which you have no adjustments (see instructions). However, if you choose to report all these transactions on Form 8949, leave this line blank and go to line 1b ." "1b Totals for all transactions reported on Form(s) 8949 with Box A checked . . . . . . . . . . . . ." "2 Totals for all transactions reported on Form(s) 8949 with Box B checked . . . . . . . . . . . . ." "3 Totals for all transactions reported on Form(s) 8949 with Box C checked . . . . . . . . . . . . ." "4 Short-term gain from Form 6252 and short-term gain or (loss) from Forms 4684, 6781, and 8824 . 5 Net short-term gain or (loss) from partnerships, S corporations, estates, and trusts from Schedule(s) K-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Short-term capital loss carryover. Enter the amount, if any, from line 8 of your Capital Loss Carryover Worksheet in the instructions . . . . . . . . . . . . . . . . . . . . . . . 7 Net short-term capital gain or (loss). Combine lines 1a through 6 in column (h). If you have any long- term capital gains or losses, go to Part II below. Otherwise, go to Part III on the back . . . . ." 4 5 6 ( ) 7 Part II Long-Term Capital Gains and Losses—Assets Held More Than One Year "See instructions for how to figure the amounts to enter on the lines below. This form may be easier to complete if you round off cents to whole dollars." (d) Proceeds (sales price) "(e) Cost (or other basis)" "(g) Adjustments to gain or loss from Form(s) 8949, Part II, line 2, column (g)" (h) Gain or (loss) Subtract column (e) from column (d) and combine the result with column (g) "8a Totals for all long-term transactions reported on Form 1099-B for which basis was reported to the IRS and for which you have no adjustments (see instructions). However, if you choose to report all these transactions on Form 8949, leave this line blank and go to line 8b ." "8b Totals for all transactions reported on Form(s) 8949 with Box D checked . . . . . . . . . . . . ." "9 Totals for all transactions reported on Form(s) 8949 with Box E checked . . . . . . . . . . . . ." "10 Totals for all transactions reported on Form(s) 8949 with Box F checked . . . . . . . . . . . . . ." "11 Gain from Form 4797, Part I; long-term gain from Forms 2439 and 6252; and long-term gain or (loss) from Forms 4684, 6781, and 8824 . . . . . . . . . . . . . . . . . . . . . . 12 Net long-term gain or (loss) from partnerships, S corporations, estates, and trusts from Schedule(s) K-1 13 Capital gain distributions. See the instructions . . . . . . . . . . . . . . . . . . 14 Long-term capital loss carryover. Enter the amount, if any, from line 13 of your Capital Loss Carryover Worksheet in the instructions . . . . . . . . . . . . . . . . . . . . . . . 15 Net long-term capital gain or (loss). Combine lines 8a through 14 in column (h). Then go to Part III on the back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ." 11 12 13 14 ( ) 15 For Paperwork Reduction Act Notice, see your tax return instructions. Cat. No. 11338H Schedule D (Form 1040) 2016

Procedure Reaction 1: Dissolving the Copper 1. Obtain a clean, dry, glass centrifuge tube. 2. Place a piece of copper wire in a weighing paper, determine the mass of the wire and place it in the centrifuge tube. The copper wire should weigh less than 0.0200 grams. 3. In a fume hood, add seven drops of concentrated nitric acid to the reaction tube so that the copper metal dissolves completely. Describe your observations in the lab report. (Caution, Concentrated nitric acid and nitrogen dioxide are very corrosive. Either will turn your skin yellow on contact. Do not leave any spills on the lab bench or in the fume hood.) 4. When the copper has dissolved, add seven drops of distilled water to the tube. Reaction 2: Preparation of Copper(II) Hydroxide 1. Add 15 drops of 3.0 M aqueous sodium hydroxide to the tube. Make sure that the reactants are well mixed. Shake the tube carefully or gently flick the bottom of the tube with your finger. Remember that the contents of the tube may still be corrosive. 2. Add a second 15 drops of NaOH(aq), mix well, and record your observations. If you have two layers at this point it means that you have not mixed the solution well enough. 3. Centrifuge the reaction mixture. 4. The liquid at the top of the centrifuged mixture is called the supernatant while the solid is called a precipitate. Before separating the supernatant from the precipitate it is necessary to ensure that all of the copper(II) hydroxide has been precipitated. The supernatant should be clear and colorless indicating the absence of any Cu+2 ions in the solution. It should also be basic due to an excess of OH- ions. Using a clean glass stirring rod, transfer a drop of the supernatant onto a piece of red litmus paper. If the litmus paper turns blue then the solution is basic and enough NaOH has been added. If the paper does not turn blue, add more NaOH, mix well, recentrifuge, and repeat the litmus paper test until the paper does turn blue. 5. An efficient separation of supernatants and precipitates is key to obtaining a good final yield of copper. The supernatant liquid can be separated from the precipitate by expelling the air from the bulb of a Pasteur pipet, inserting the tip of the pipet into the supernatant, then gently sucking the supernatant into the pipet. If you expel air or liquid into the precipitate with the pipet, you will stir up the precipitate and will have to repeat the centrifugation step. Remove as much liquid as possible and discard it in the waste container provided on the instructor’s cart. It is better to leave a small amount of supernatant liquid than to remove some of the copper(II) hydroxide precipitate. Reaction 3: Formation of Copper(II) Oxide 1. Set up a hot water bath by placing a beaker of water on a hotplate, placing an iron ring around the beaker, and heating the water to boiling. 2. Place the centrifuge tube containing the copper(II) hydroxide into the boiling water. Carefully hold the tube with a test tube clamp so that it doesn’t get water into it. Record your observations. Reaction 4: Formation of Copper(II) Sulfate 1. Add 20 drops of 3.0 M H2SO4 to the solid in the centrifuge tube. Stir carefully to ensure that the copper(II) oxide dissolves completely. Complete dissolution of the mixture will require thorough mixing and possibly heating of the solution. 2. Obtain the mass of a small, clean, glass test tube as accurately as possible. 3. Transfer the liquid from the centrifuge tube into the test tube. Rinse the centrifuge carefully with 1.0 mL of distilled water and transfer the rinse into the test tube containing your sample. 4. Record your observations on the data sheet. Reaction 5: Formation of Copper Metal 1. Add a small quantity of zinc powder to the sample solution. Continue adding zinc in small quantities until the solution loses the blue copper(II) color. Any excess zinc added will need to be removed so don’t add it too quickly or in large quantities. When the solution has turned colorless, add several drops of 3.0 M H2SO4 to the tube to dissolve any left over zinc. You can tell that the zinc has dissolved when addition of sulfuric acid does not generate bubbles. 2. Allow the copper metal to sink to the bottom of the tube and carefully remove the supernatant liquid using a Pasteur pipet. 3. Wash the red-brown copper metal in the tube with 1.0 mL of water. Allow the copper metal to settle to the bottom and remove the excess water. Repeat this rinsing process two more times. 4. Describe your observations on the data sheet. Drying the copper metal 1. After removing as much of the third rinse water as possible you are ready to dry the metal. This must be done carefully in a cool Bunsen Burner flame. If the tube is heated too quickly there is a risk of ejecting the contents of the tube as the water boils. Also, if the flame is too hot you may convert the copper metal back into black copper(II) oxide. The objective is to drive the water from the tube as steam. Make sure that as water condenses on the walls of the tube that you continue to heat until all of the water if gone from the tube. 2. Once all of the water is removed from the tube, cool the tube and its contents then determine the mass of copper by weighing the tube and subtracting the tube + copper weight from the weight of the empty tube (Reaction 4 step 2). If the mass of copper is higher than the original mass of the copper wire it either contains water or zinc or has been converted to copper(II) oxide. Excess water can be removed by reheating the tube and reweighing to constant mass. Excess zinc requires addition of sulfuric acid followed by re-rinsing with water and re-drying. Chemistry 1215 Experiment 9 Lab Report Name ______________________________ Data Sheet Mass of copper wire _______________ Mass of clean, dry test tube _______________ Mass of test tube plus copper _______________ Mass of final copper sample _______________ Percent recovery of copper. Show all calculations. Observations 1. Describe your observations for Reaction 1 including colors, gases formed, etc. 2. Describe your observations for Reaction 2 including colors, gases formed, etc. 3. Describe your observations for Reaction 3 including colors, gases formed, etc. Estimate the temperature of the decomposition of Copper(II) hydroxide. 4. Describe your observations for Reaction 4 including colors, gases formed, etc. 5. Describe your observations for Reaction 5 including colors, gases formed, etc. Write a brief discussion of your results including a statement of the final percent recovery of copper and a discussion of reasons why the recovery differs from 100%. Chemistry 1215, Experiment #9; Copper and its compounds, Pre-lab Name ____________________________________ 1. Write a balanced chemical equation including phase labels for the reaction between aqueous copper (II) nitrate and aqueous sodium hydroxide. 2. Nitrogen monoxide (NO) and nitrogen dioxide (NO2) are toxic, corrosive gases that significantly lower blood pressure when inhaled. How are these gases produced in today’s experiment? What should you do to protect yourself against their toxicity? 3. Iron reacts with oxygen from the atmosphere to produce iron (III) oxide, also known as rust (Fe2O3). What chemical species is oxidized in this reaction? What is the reducing agent? Jaffrey Zagnut couldn’t find any nitric acid so he tried to dissolve his copper sample in hydrochloric acid instead. Unfortunately his copper wouldn’t dissolve in HCl. Why will copper dissolve in nitric acid but not in hydrochloric acid (after all, HCl is a stronger acid than HNO3). Chemistry 1215, Experiment #9; Copper and its compounds, Post-lab Name ____________________________________ 1. Copper (II) hydroxide is converted into copper (II) oxide by heating the test tube containing Cu(OH)2 in a hot water bath. Is it necessary to use distilled water in this water bath? Why or why not? 2. Copper metal doesn’t “rust” in the presence of oxygen at room temperature. However, it will react with O2 at elevated temperatures. Write a balanced chemical equation describing the formation of copper (II) oxide when copper metal is heated in air. 3. When zinc is dissolved in sulfuric acid a gas is produced. What is the chemical identity of this gas? How is it produced? 4. Jaffrey Zagnut started with a 0.032 g sample of copper which he took through the series of reactions described in this experiment. At the end of the experiment he obtained 0.038 g of a black product. What was his percent yield? What is the most likely source of the error in his experiment? (Hint: consider question 2 above)

The movie industry is a competitive business. The opening weekend gross sales ($ millions), the total gross sales ($ millions), the number of theaters the movie was shown in, and the number of weeks the movie was in release are common variables used to measure the success of a movie. Data on the top 100 grossing movies released in 2016 (Box Office Mojo website) are contained in the attached Excel file. We will use the numerical methods of descriptive statistics discussed in Chapter 3 to create a report of our findings.

1. Find descriptive statistics, including the mean, median, mode, range, standard deviation, and quartiles, for each of the four variables described above. Discuss what the statistics you find tell us about the movie industry.

2. According to Total Gross Sales, what movies if any, should be considered high-performance outliers? Explain how you arrived at your answer mathematically. (Use the method on p. 134 for detecting outliers.) Round any calculations/data to two decimal values.

3. Compute descriptive statistics showing the relationship between total gross sales and each of the other variables. These need to include the covariance and correlation coefficient. Discuss the relationships.

Biodiversity loss is one of the more important environmental issues humans need to address. a. (3 pts.) Name two ecosystem services biodiversity provides and why each is important. b. (3 pts.) Name three human activities that are threats to biodiversity? Which is the greatest threat and why? c. (2 pts.) What can society and individuals do to reduce the risk of extinction (list at least two things). Name a MN threatened/endangered species we talked about that would be helped by these actions.

1. Name two main pathways that macrophages contribute to the innate immune response.  For each of these pathways, name the molecules involved and which molecules recognize the infectious agent.  8 pts
2. Define inflammation.  Describe the signs and symptoms of inflammation.  Include a definition of endothelial permeability, exudates, extravasation and the role of cell adhesion molecules. 12 pts
3. Make a list of 15 different biologically active complement protein fragments.  For each fragment, name the parent complement protein from which it is derived and also its biological function.   12 pts

Ch. 1 p.18

1. How does Managerial accounting differ from financial accounting?

Ch. 1 p.18

4) Name the three types of business entities and briefly describe the nature of each.

6) Pick any large company and identify which type of business entity it is.

Ch. 2 p.51

4) Name the three inventory accounts maintained by manufacturing firms and briefly describe the nature of each.

5) Name and briefly describe the three major categories used to account for manufacturing costs.

17.  Consider the weighted voting system [36: 20, 18, 16, 2]

a) Find the Banzhaf power distribution of this system.

P1  P2  P3  P4                       P1  P2  P3                  P1  P2

P1  P2 P4                  P1  P3  

                                    P1  P3  P4

                                    P2  P3  P4

P1:                              P2:                              P3:                              P4:

b) Name the dictator in this system, if there is one.  If not, write "none".

c) Name the players with veto power in this system.  If there are none, write "none".

d) Name the dummies in this system.  If there are none, write "none".

A market survey was conducted in a city which numbers 16,000 homemakers. The survey was conducted to estimate the proportion of homemakers who could recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,400 homemakers surveyed, 420 were able to identify the brand name. a. Using the 0.99 degree of confidence, the population proportion lies within what interval? b. An advertising firm claims that at least 30% of all homemakers can recognize the brand name of a cleanser based on the container. Do you agree? Explain.