1. The following table was filled by the student during the measuring of the absorbance of a 100 mM solution of Ni2+ ion. Wavelength Absorbed (nm) Color Absorbed Color Observed Absorbance of solution 410 Violet Yellow-Green 0.23 430 Blue-Violet Yellow 0.52 480 Blue Orange 0.07 500 Blue-Green Red 0.03 530 Green Purple 0.01 560 Yellow-Green Violet 0.01 580 Yellow Blue-Violet 0.01 610 Orange Blue 0.03 680 Red Blue-Green 0.16 720 Red-Purple Green 0.19 Select a correct wavelength to measure the absorbance of nickel-containing solutions and justify your answer below 2. The following calibration table was built in order to calibrate the colorimeter: Blank 0.000 0.00 Test tube 1 0.020 0.10 Test tube 2 0.040 0.26 Test tube 3 0.060 0.37 Test tube 4 0.080 0.42 Test tube 5 0.100 0.53 Test tube 6 0.120 0.68 Test tube 7 0.140 0.72 Test tube 8 0.160 0.88 Test tube 9 0.180 0.98 Test tube 10 0.200 1.20 Report the equation of your calibration curve (trendline) in terms of Absorbance, Molarity, and Molar Absorptivity (you do not need to show the graph) and the value of R2 Calibration Curve Equation The value of molar absorptivity with units The value of R2 The 18.0 g sample of Zn-Ni alloy was dissolved in the nitric acid and diluted to 250.0 mL. The measured absorbance of the solution was 0.77. Use the calibration curve equation to calculate and report the molarity of the solution and % nickel in the alloy. Show work for credit in the space provided. Molarity of solution %Nickel To receive full credit (12 pts for answers and 8 pts for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED Final

When should this device be used? I. When the patient complains of dry nasal passages using a nasal cannula II. When the patient has thick retained secretions with a non-productive cough III. When the flow is at > 4 lpm using a nasal cannula IV. If the practitioner hears stridor in the laryngeal area

A patient demonstrates excessive trunk sway and poor alignment during functional tasks. What should the PTA focus on FIRST?

A patient practicing trunk rotation with a resistance band is MOST likely training for which functional task?

Which of the following set of guidelines is used to reduce stress?

Which condition is a clear contraindication to plyometric training?

A patient performing box jumps starts landing with excessive knee valgus due to fatigue. As a PTA, your BEST action is to:

The fight-or-flight response includes several physiological reactions that help the body prepare for which of the following?

Consider the data table below to calculate the enthalpy of reaction for the neutralization of nitric acid by barium hydroxide.   Volume   of 1.021MHNO3,  mL 50.00 60.00 70.00 80.00 90.00 100.0 Volume of 0.572MSr(OH)2, mL 100.0 90.00 80.00 70.00 60.00 50.00 Change of temperature, oC 4.54 5.45 6.36 7.27 6.54 5.46 Analyze the Data Table to find the highest temperature and answer the following questions. Consider the density of the solutions to be the same as water, 1.00 g/mL, both before and after mixing, and the heat capacity is the same as for water, 4.18J/oCg.  Since your calculators may give you slightly different numbers, pick the closest answer. The highest temperature change in oC  Number of moles of acid  at the highest temperature (at stoichiometric ratio) Number of moles of the base  at the highest temperature (at stoichiometric ratio) Mole fraction of acid and mole fraction of base at the highest temperature (at stoichiometric ratio) Stoichiometric mole ratio for the reaction: moles acid/moles base, calculated Stoichiometric mole ratio for the reaction: moles acid/moles base, rounded to the whole number Heat absorbed by the solution in the calorimeter, J Heat in kJ produced by the reaction between solutions of acid and base in the calorimeter Heat of reaction in kJ per number of moles of base Thermochemical equation and Enthalpy of the neutralization reaction (Hint: Enthalpy is per number of moles of water) To receive full credit (10 pts for answers and 10 pts for showing work), submit a picture of your work to the Final Exam Required Work & Partial Credit  assignment AFTER SUBMITTING COMPLETED FINAL

A PTA progresses a patient from bilateral stance to single-leg stance during reaching tasks. This MOST closely represents progression in: