Final Exam Practice Test Questions from exam 1: 1. Find the mass percent of Potassium in K3Fe(CN)6 2. Calculate the number of moles in 25 g of KMnO4 3. Calculate the number of protons, neutrons and electrons in U-238 4. Write the empirical formula for a compound with .0134g of Iron, .00769g of Sulfur and .0115 g Don't forget about the age old question of final exam schedule iup
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of Oxygen. 5. Identify each property as extensive or intensive: boiling point; density; color; mass. 6. Ions found in the alkaline earth metals family have a charge of? 7. The empirical formula was found to be P2O5. The experimental mass of the compound was 283.89 g/mol. What is the molecular formula of the compound? 8. Balance the following equation: __CO2 + __H2O __C6H12O6 + __O2 9. Given the following equation: 2 NAClO3 2 NaCl + 3O2. 12.00 moles of NaClO3 will produce how many grams of O2? 10. Name the following compound: Mg3P2 Questions from exam 2: 11. What is the oxidation number of Sulfur in SO42-? 12. What is the density of Carbon Tetrafluoride at 1.00atm and 50°C? 13. Predict the products for the following reaction: V2O5 + 5 CaS? 14. What is the molarity of a 2500 mL solution that contains 734 grams of Lithium Sulfate? 15. In the following redox reaction: Cl2 + 2NaBr 2NaCl +Br2 ; Which species in this reaction is the reducing agent? 16. What type of reaction is this: CdSO4 (aq) + K2S (aq) CdS8 (s) + K2SO4 (aq)? 17. How many moles are in a sample of Argon that occupies a 250mL container at 150°C and has a pressure of 5atm? 18. Identify the spectator ions in the following equation: Pb(NO3)2 (aq) + 2NaI (aq) PbI + 2NaNO3 (aq) 19. The volume of a gas is 6 L at 125°C, what is the volume if the temperature is increased by 60°C? Questions from Exam 3: 20. Consider the balanced equation: Ca(OH)2 (s) + 2HCl (aq) CaCl2 (aq) + 2H2O (l). How many liters of .100 M of HCl would be required to react completely with 5.00 grams of Calcium hydroxide? 21. Identify the atom based on the electron configuration 1s2 2s2 2p6 3s2 3p 22. What is the trend of atomic size on the periodic table? 23. Write the condensed electron configuration for Se 24. What is the trend of ionization energy on the periodic table?25. What does the aufbau rule state? 26. A student must use 225mL of hot water in a lab. Calculate the amount of heat required to raise the temperature of 225 mL of water from 20.0° C to 100° C. Heat capacity of water is 4.184. 27. Draw the orbital diagram that shows the electron configuration for O. 28. If n=3 what number does l have to be? 29. What is the wavelength of a wave having a frequency of 3.76 x 1014 s-1? Questions from exam 4: 30. What is the molecular shape for SF6? 31. Is the above compound polar? Why or why not? 32. A neutral molecule has the general form AX4E1. What is the hybridization of A? 33. How many valence electrons does Carbon have? 34. What is the electron group geometry and the molecular shape for NH3? 35. Draw the Lewis structure for BrO3- 36. What bond angle would you expect with the compound BeCl2? 37. How many sigma bonds are there in a triple bond? 38. What is the formal charge for Nitrogen in the polyatomic ion nitrate NO3 - ? 39. What is the parent geometry of SnCl2?