Nao volume 4 exam - Study guides, Class notes & Summaries

NAO VOLUME 4 EXAM;; 205 QUESTIONS AND ANSWERS....

CHEM 120 WEEK 8 Final Exam 2023 with correct answers Already graded A+ molarity = moles solute / liters solution 0.25 M = moles NaOH / 0.035 L moles NaOH = 0.00875 moles NaOH 1. (TCO 8) 35.0 mL of 0.25 M NaOH is neutralized by 23.6 mL of an HCl solution. The molarity of the HCl solution is (show your work): (Points : 5) 2. (TCO 1) How many mL are in 3.5 pints? Show your work. (Points : 5) 3.5 pints is equivalent to 1656.116 1 pint = 473.176 ml 3.5 pints* 473.176mL = 1656.116mL 3. (TC...

6. (TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. (Points : 5) Using Charles’ Law, ( V1/T1) = (V2/T2). First, convert temperature to KELVIN (T1 = t1 +273) Thus, T1 = 95 + 273 = 368. We have V1 (165 mL) & T2 = (25 + 273) = 298. V2 = (V1*T2)/T1 = (165 mL*298)/368 = 133.6 mL. 0 7 Short 16 7. (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant tempera...

NAO VOLUME IV EXAM QUESTIONS AND ANSWERS The amount of reflection of each surface of CR-39 plastic lenses is approximately: - ANSWER-4% The absorption of light in lenses is classified by two variables. What are they? - ANSWER-Tint and lens transmission The denser the tint in a lens, the _____: - ANSWER-Less transmission of light through the lens Standard transmission in sunlenses should range between: - ANSWER-15% and 30% If a person has exposure to sunlight at least 2 hours or more durin...

NAO Volume 2 Exam Questions and Answers Absorption - ANSWER-in terms of light and lens- when a ray of light enters a lens some of the light will not completely travel through the lens Deviation (Angle of) - ANSWER-the angle a ray of light is changed from its original path Diffuse Relection - ANSWER-a reflection from a rough surface- the reflection does not produce a clear image Incidence (Angle of) - ANSWER-the angle which a ray of light makes the surface of a refracting medium Reflecti...

6. (TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. (Points : 5) Using Charles’ Law, ( V1/T1) = (V2/T2). First, convert temperature to KELVIN (T1 = t1 +273) Thus, T1 = 95 + 273 = 368. We have V1 (165 mL) & T2 = (25 + 273) = 298. V2 = (V1*T2)/T1 = (165 mL*298)/368 = 133.6 mL. 0 7 Short 16 7. (TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. For a gas sample at constant tempera...

CHEM 120 Week 8 Final Exam 1.(TCO 6) A gas at a temperature of 95 degrees C occupies a volume of 165 mL. Assuming constant pressure, determine the volume at 25 degrees C. Show your work. (Points : 5) Using Charles’ Law, (V1/T1) = (V2/T2). First, convert temperature to KELVIN (T1 = t1 +273) Thus, T1 = 95 + 273 = 368. We have V1 (165 mL) & T2 = (25 + 273) = 298. V2 = (V1*T2)/T1 = (165 mL*298)/368 = 133.6 mL. 0 7 Short 16 2.(TCO 6) A sample of helium gas occupies 1021 mL at 719 mmHg. F...