2.  (WCSP[x], 5 points) Draw a resonance structure of the cyanate ion.  Show curved arrows to indicate the movement of electrons in the original structure.   Enter the number of lone pair electrons on N in the resonance contributor below:

Shown below are five curves that represent the distribution of molecular speeds of five different gases at the same temperature and pressure, each in a separate 10 L container. The gases are H2, CH4, He, SF6, and N2. Complete the statements so that they are true.   a. The gas represented by [drop1] has the largest fraction of molecules traveling at the most probable speed. b. Curve [drop2] corresponds to N2. c.  All of the gases represented have the same [drop3]. d.  Gas [drop4] has the greatest density. e.  Decreasing the speed of the molecules will [drop5] the pressure.

3. (WCSP[x], 6 points) Draw two constitutional isomers using bond line structure having the formula C4H8O.  Use two different functional groups and label them by name.   Enter the number of sigma bonds in one isomer below:

8. (WCSP[x]) Heavy metals, such as calcium, can be extracted from water by a precipitation reaction.   Hard water has a Ca2+ ion concentration around 4.24 x 10-3 M.   When hard water is mixed with a solution of soda ash (sodium carbonate, Na2CO3), the calcium ions react to form a precipitate and the water is now “softened.”  The precipitate can be removed by filtration. a.  (8 points) Write the complete balanced equation and the net ionic equation that occurs when Ca2+ and sodium carbonate react. Circle the precipitate. b.  (6 points) A 1000 mL soda ash solution was prepared with 5.0 g of sodium carbonate (MW = 106 g/mol).  Calculate the concentration (in M) of the sodium carbonate in the solution.  Calculate the concentration of sodium ions Enter the concentration of sodium ions below.

Which neurotransmitter is primarily involved in regulating mood, sleep, and cognition?

What is the osmotic pressure of an aqueous solution of 0.45 M potassium phosphate at 282 K?  Answer in atm. Do not use scientific notation. Do not type units.

Watch the video below and identify the vocabulary word for each corresponding number. Type answers in the GLOSSED form. Answers not typed in Glossed form will not be given credit.  HINT; keep your CAPS LOCK ON for the majority of the quiz 😉  Canvas is very sensitive. Submissions will be checked to ensure students are awarded the correct points [AFRICA] [FUEL-ON-EMPTY] [fs-FEB] [LANGUAGE] [VACATION]

Case 5 – Use for questions 65-71 JB is a 35-year-old female (132 kg, BMI 42) who was admitted to the ICU following a highway speed motor vehicle accident.  The patient’s blood alcohol content upon arrival to the emergency department was 0.32% (four times the legal driving limit).  The patient sustained multiple orthopedic injuries from the accident, requiring several visits to the OR during her first 48 hours of admission.  The patient does not have any past medical history on file.  However, her family mentions that she regularly consumes 5-6 alcoholic beverages a day.  On day three of admission, when propofol is turned off for the patient’s spontaneous awakening and breathing trial, she becomes extremely agitated and delirious.  After some discussion on rounds, the medical team believes the patient is going through severe alcohol withdrawal.

The nurse calculates his RASS score to be -4 and his CPOT score to be 0 (zero).  Which of the following would be the best pain, agitation, delirium regimen for TJ? (see RASS and CPOT tables on separate sheet)

While the team is deciding what to give in question #43, the medical student also asks you to calculate the correct loading dose of levetiracetam for DF (assume her ideal body weight = 50 kg)?