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Final Review

Final Review. On a new sheet of paper label the top: “Review Do Nows ” and begin answering the questions. Be sure to write the questions AND answer!. Determine the oxidation of S in HSO 3 - What are the products of the reaction between LiOH and HF?

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Final Review

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  1. Final Review On a new sheet of paper label the top: “Review Do Nows” and begin answering the questions. Be sure to write the questions AND answer!

  2. Determine the oxidation of S in HSO3- • What are the products of the reaction between LiOH and HF? • How many grams of NaOH should be added to 225 g of H2O to produce a 0.10m solution? • How many unpaired electrons does oxygen have in the ground state? • Which demonstrates trends for increasing atomic radius? Li, Na, K or Ba, Sr, Ca

  3. 6. What is the difference between: boiling/condensing, sublimation/deposition, melting, freezing 7. Using sig figs, add these numbers: 5.47, 4.2, 5.391 8. What is the total number of ions in 2.0 mol of Cu(NO3)2 9. What is the correct formula for magnesium sulfate? 10. Balance: Al2(SO4)3 + Ca(OH)2 Al(OH)3 + CaSO4

  4. 11. What is the empirical formula for molecular butane C4H10? 12. A 5.0 L sample of Kr gas at a pressure of 75 mmHg is at a constant temperature. What volume will the gas occupy at 700 mmHg? 13. In the equation: Fe2O3 + CO  Fe + CO2 What mass of Fe is formed from 1800 g of Fe2O3? 14. How many oxygen atoms are present in iron (II) sulfate octahydrate? 15. How many liters of water at STP will react with 1 mole of H2S? H2S + O2  H2O + SO2

  5. 16. A sample of ethanol required 25 KJ of energy to be heated from 20oC to 28oC. How many grams of ethanol were heated? C = 3.42 J/goC 17. A weak base is titrated with a known concentration of a strong acid, sketch the titration curve. • Choose the series of elements that increases in electronegativity. Rb, Cs, Fr or N, O, F • Calculate protons, neutrons, electrons, in S2- • Is HSO4- acting as an acid or base in this equation? HSO4- + H2O ↔ SO4-2 + H3O+

  6. 21. What is the average atomic mass of the following isotope: 22. Half-life for Candium = 100 years. If 12.5% of a sample remains, how old is candium? 23. Write the ksp expression for iron (II) nitrate. 24. What is the heat of formation of H for the reaction A  B [see picture] 25. A compound is 36.5% Na, 25.4% S, 38% O. What is the empirical formula? If the molar mass of the compound is 252 g/mol, what is the molecular formula?

  7. 26. Describe how you would determine the density of 1cm on each side? How would determining density of an irregular shaped objected differ? 27. Calculate [H3O+] for a substance with a pH of 5.7. 28. What is the pH and the pOH of a solution if the [H3O+] is 3.4x10-5M? 29. Mineral oil dissolves in canola oil but does not dissolve in water, what is the reason for this? 30. Name the following: H HHHHH H-C - C - C-H H-C = C - C-H H HHH

  8. 31. What is the molecular geometry of: BF3 CH4 NH3 32. Which has a greater effect on the freezing point of ice? MgBr2 CH2H5OH KCl 33. Which molecule is nonpolar? CO2NaCl NH3 34. What particle is emitted when 21084 Po changes to 20682Pb? 35. How many moles are in 236 g of NaOH?

  9. 36. What is the IUPAC name for Ni3(PO4)2? 37. What is the percent of Na in NaOH? 38. Zinc Nitrate and Ammonium Sulfide produce… 39. A piece of calcium has a mass of 4.5 g. It is placed in 35 mL of water. (DH2O = 1 g/mL) -- Write a balanced equation. -- What is the limiting reactant? 40. HCl with a molarity of 2.5M is titrated with 46.4 mL of 5.0 M NaOH. What was the original volume of HCl?

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