Ohio Assessments for Educators - Chemistry (009): Practice & Study Guide Final Exam

Free Practice Test Instructions:

Choose your answer to the question and click 'Continue' to see how you did. Then click 'Next Question' to answer the next question. When you have completed the free practice test, click 'View Results' to see your results. Good luck!

Question 1 1. How many electrons does the reactant Si lose in the following redox reaction?

Question 2 2. Which of the following factors tends to decrease the rate of a chemical reaction?

Question 3 3. 20 ml of a 0.1M solution of NaOH is needed to neutralize 50 ml of a HCl solution to its equivalence point. What is the concentration of the HCl solution?

Question 4 4. How many grams of NaCl are in 20 liters of a 0.04M sodium chloride solution?

Question 5 5. The vapor pressure of pure acetone at 20 degrees Celsius is 184.95 mmHg. If 75 grams of barium chloride is added to 2,000 grams of acetone at that temperature, what will the vapor pressure of the mixture be?

Question 6 6. How many protons are in the nucleus of one atom of lead (Pb)?

Question 7 7. The valence electrons of the element cadmium (Cd) are located in which of its subshells?

Question 8 8. Which of the following elements has the smallest atomic radius?

Question 9 9. A researcher wishes to evaluate if there is a correlation between a person's birth month and their body mass index (i.e. their weight in kilograms divided by the square of their height in meters). Which of the following sampling methods should the researcher employ to obtain the best data for determining if such a correlation exists?

Question 10 10.

How many significant figures does the sum of the following measurements have?


2.06 + 0.0005 + 0.0800 + 7

Question 11 11. If the change in enthalpy for a chemical reaction is equal to -725 KJ per mole, which combination of values for the reaction's temperature T (in degrees Kelvin) and change in entropy ΔS (in KJ per mole - Kelvin degrees) listed below would cause the reaction to be spontaneous?

Question 12 12. A balloon contains 0.4 cubic meters of helium at a temperature of 27 degrees Celsius and a pressure of 1,100 millimeters of mercury. How may kilograms of helium are contained in the balloon?

Question 13 13. The equilibrium constant (K) for the following reaction at 1,200 degrees Kelvin is equal to 0.64. If the reaction is at equilibrium and the concentration of CO = 20M, what is the concentration of CO2?

Question 14 14. Using the VSEPR model theory, what is the three-dimensional shape of a XeF4 molecule?

Question 15 15. Which of the following statements is true regarding the electronegativity between two atoms in a molecule?

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Ohio Assessments for Educators - Chemistry (009): Practice & Study Guide Final Free Practice Test Instructions

Choose your answer to the question and click 'Continue' to see how you did. Then click 'Next Question' to answer the next question. When you have completed the free practice test, click 'View Results' to see your results. Good luck!

Ohio Assessments for Educators - Chemistry (009): Practice & Study Guide  /  OAE Prep
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