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Question 1 1. Which of the following types of intermolecular forces is the strongest?
Question 2 2. Using the VSEPR model theory, what is the three-dimensional shape of a H3 O^- ion?
Question 3 3. The valence electrons of the element Germanium (Ge) are located in which of its subshells?
Question 4 4. Which of the following elements has the lowest ionization energy?
Question 5 5. A NaOH solution has a pH of 12.4. What is the concentration of H^+ ions in the solution?
Question 6 6. Which of the following compounds has an optical isomer?
Question 7 7. How many electrons does the reactant Mg atom lose in the following redox reaction?
Question 8 8. What is the molality of a 5M HCl solution if it has a density of 1.2 × 10^3 grams per liter?
Question 9 9. The vapor pressure of pure Methanol at 25 degrees Celsius is 126.16 mmHg. If 40 grams of Potassium Chloride is added to 3500 grams of Methanol at that temperature, what will the vapor pressure of the mixture be?
Question 10 10. What is the volume of 8g of Xenon gas that is being stored at a temperature of 350 degrees Kelvin and a pressure of 1800 mmHg?
Question 11 11. If 12,000 KJ of energy is required to heat 400 kg of Methyl Ethyl Ketone at atmospheric pressure from a temperature of 281 degrees Kelvin to 295 degrees Kelvin, what is the heat capacity factor for Methyl Ethyl Ketone?
Question 12 12. The equilibrium constant (K) for the following reaction at 25 degrees Celsius is equal to 4.61 × 10^-3. If the reaction is at equilibrium and the concentration of N2 O4 = 0.08M, what is the concentration of NO2 ?
Question 13 13. A biologist wishes to determine the fish population by species in a local pond by performing net fishing mark and recapture activities. Which of the following sampling methodologies should the biologist use to arrive at an accurate count of each fish species in the pond?
Question 14 14. The standard atomic weight of the element Zirconium is 91.224. Which is the correct answer for representing this value in scientific notation?
Question 15 15. Radium-226 (Ra-226) has a half-life of 1600 years. If 500 kilograms of Ra-226 is sealed in an underground vault, how long will it take for its mass to be reduced by 25%?
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