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Answer Questions 21-24, from this common set of facts:  Norma is driving north along US 1.  As Norma approaches a traffic light she notices the “walk” light is flashing.  Norma accelerates, and the light turns from green to yellow.  As Norma crosses the intersection, she is simultaneously struck in the left rear quarter panel by Edward, a driver headed east, and in the front right quarter panel by Willy, a driver headed west.  Norma’s car spins wildly after the collision and she suffers paralyzing injuries to her neck.  After a jury trial, Norma was found to be 20% at fault, while Edward and Willy were both 40% at fault. Assume the collision occurs in Maryland, with a contributory negligence state law.  How much can Norma expect to recover?

Answer Questions 21-24, from this common set of facts:  Norma is driving north along US 1.  As Norma approaches a traffic light she notices the “walk” light is flashing.  Norma accelerates, and the light turns from green to yellow.  As Norma crosses the intersection, she is simultaneously struck in the left rear quarter panel by Edward, a driver headed east, and in the front right quarter panel by Willy, a driver headed west.  Norma’s car spins wildly after the collision and she suffers paralyzing injuries to her neck.  After a jury trial, Norma was found to be 20% at fault, while Edward and Willy were both 40% at fault. Assume the collision occurs in Florida, with a comparative negligence state law.  How much can Norma expect to recover?

The axis or  of a lens (not the axis of the prescription) as diagramed is

The approximate speed of light in air is

EXAM PROBLEM #7 Instructions: Consider the molecule shown below. Answer each question by selecting the best choice from the dropdown box. There is no need to show any work on your “work” page. Note: I am unable to do any superscript formatting or insert a degree sign in the dropdowns. Molecule: Questions: A.   How many sigma bonds does the C atom have in this molecule?  [sigmaC] B.   How many pi bonds does the C atom have in this molecule?  [piC] C.   What type of orbital is the C atom using for its sigma bond(s)?  [sigmaorbitalC] D.   What type of orbital is the C atom using for its pi bond(s)?  [piorbitalC] E.   What is the bond angle for the C atom in this molecule?  [angleC] F.   What is the molecular geometry name for the C atom in this molecule?  [geomnameC] G.   What type of orbital is each Cl atom using for its nonbonding electrons?  [orbitalCl] H.   What is the angle between the electron domains that surround each Cl atom in this molecule?  [angleCl]    

EXAM PROBLEM #2 Instructions: Type your answers to the questions in the textbox below. Label your answers A and B. Show all work on your “work” page.  Label which problem it is (#2). Reaction:     4 NH3 (g)  +  5 O2 (g) –>  4 NO (g)  +  6 H2O (g)              ΔH = -906.0 kJ Questions: A.   Is heat released or absorbed by the system in this reaction? Briefly explain how you know. B.   How many grams of ammonia, NH3 must react in order for 32.41 kcal to be released or absorbed in this reaction?    

EXAM PROBLEM #3 Instructions: (1)  Type your answer to the question in the textbox below. (2)  Show all work on your “work” page.  Label which problem it is (#3). (3)  Type a degree sign by using the superscript tool with a lowercase “o”. Question: At what temperature ( in oC) will nitrogen gas have a density of 1.218 g/L if the pressure is 187.6 kPa?

EXAM PROBLEM #5 This question is one of the seven questions for which the lowest score will be dropped. Instructions: Type your answer to the question in the textbox below. Show all work on your “work” page.   Label which problem it is (#5) Situation: A large bottle contains some boric acid solution with an unknown concentration.  A 25.00 mL sample of this acid solution is titrated with a 1.438 M NaOH solution.  It takes 18.31 mL of the NaOH solution to reach the endpoint of the titration. Reaction:  H3BO3 (aq)  +  3 NaOH (aq)   –>   3 H2O (l)  +  Na3BO3 (aq) Question: What is the molarity of the unknown boric acid solution?  

EXAM PROBLEM #10 Instructions: This is a series of separate questions. Select your answers from the dropdown boxes. There is no need to write anything on your “work” page. Question 10A: Classify each of the following as an element, compound, homogeneous mixture or heterogeneous mixture. (1)   3 M HCl  [HCl] (2)   an apple  [apple] (3)  ozone, O3  [ozone] Question 10B: There are three identical containers described here: Container P has 100 moles of oxygen gas, O2. Container Q has 100 moles of hydrogen gas, H2. Container R has 100 moles of copper, Cu. (1)   Comparing the number of molecules in containers P and Q, which statement is true?  [molecules] (2)   Comparing the masses in all three containers, which statement is true?  [masses]   Question 10C: Which one of these statements best describes what happens when a teaspoon of table salt, NaCl, is dissolved in a cup of warm water?  [NaCl]

EXAM PROBLEM #6 Instructions: Write balanced chemical equations for the following reactions on your “work” page. Include reactants and products for all reactions. Include all physical states. Label which problem it is (#6) and label the answer parts A, B, C, D, E. There is no need to show any additional work on your “work” page, just the final answers. When finished, type an “X” into the textbox below so Canvas knows you have answered the question. Reactions: A.   Pb(NO3)2 (aq) +  Na2SO4 (aq) –> B.   HC2H3O2 (aq) +  Ca(OH)2 (aq) –> C.   Zn(s) +  Au(NO3)3 (aq) –> D.   Write the total ionic equation for reaction A. E.   Write the net ionic equation for reaction A.