* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Chemistry Spring Final Review
Relativistic quantum mechanics wikipedia , lookup
Nucleophilic acyl substitution wikipedia , lookup
Spinodal decomposition wikipedia , lookup
Debye–Hückel equation wikipedia , lookup
Marcus theory wikipedia , lookup
Gas chromatography–mass spectrometry wikipedia , lookup
Acid–base reaction wikipedia , lookup
Chemical equilibrium wikipedia , lookup
Freshwater environmental quality parameters wikipedia , lookup
Electrochemistry wikipedia , lookup
Process chemistry wikipedia , lookup
Water splitting wikipedia , lookup
Chemical reaction wikipedia , lookup
Physical organic chemistry wikipedia , lookup
Thermometric titration wikipedia , lookup
Atomic theory wikipedia , lookup
Rate equation wikipedia , lookup
George S. Hammond wikipedia , lookup
Photosynthetic reaction centre wikipedia , lookup
Lewis acid catalysis wikipedia , lookup
Click chemistry wikipedia , lookup
Chemical thermodynamics wikipedia , lookup
Electrolysis of water wikipedia , lookup
Transition state theory wikipedia , lookup
Strychnine total synthesis wikipedia , lookup
Name: ___________________________ Block: _____ Date: ________________ Chemistry Spring Final Review 1. What is the percent by mass of hydrogen in NH3 ? A. 5.9% B. 17.6% C. 21.4% 2. The percent by mass of nitrogen in Mg(CN) 2 is equal to 14 14 28 A. × 100 B. × 100 C. × 100 76 50 76 3. What is the percent by mass of oxygen in Fe 2 O 3 ? A. 16% B. 30% C. 56% D. 82.4% D. 28 50 × 100 D. 70% 4. What is the correct name of the compound with the formula NH4 NO 2 ? A. Ammonia nitrite C. Ammonia nitrate B. Ammonium nitrite D. Ammonium nitrate 5. Which formula correctly represents iron (III) oxide? A. Fe 2 O 3 B. Fe 3 O 2 C. FeO 3 D. Fe 3 O 6. What is the name of the compound whose formula is H2 SO 4 ? A. Hydrosulfuric acid C. Sulfuric acid B. Hydrosulfurous acid D. Sulfurous acid 7. What is the correct name for the compound with the formula CrPO 4 ? A. Chromium (II) phosphate C. Chromium (III) phosphate B. Chromium (II) phosphide D. Chromium (III) phosphide 8. What is the molar mass of a compound if 5 moles of the compound has a mass of 100 grams? A. 5 g/mol B. 20 g/mol C. 100 g/mol D. 500 g/mol 9. Which quantity is equivalent to 39 grams of LiF? A. 1.0 mole B. 2.0 moles C. 0.50 mole D. 1.5 moles 10. What is the mass in grams of 1.00 mole of O 2 gas? A. 11.2 B. 16.0 C. 22.4 D. 32.0 11. The molar mass of Ca 3 (PO 4 ) 2 is A. 246 g/mol B. 279 g/mol D. 342 g/mol C. 310 g/mol 12. What is the total number of moles contained in 115 grams of C 2 H5 OH? A. 1.00 B. 1.50 C. 3.00 D. 2.50 13. What is the total mass in grams of 0.75 mole of SO 2 ? A. 16 g B. 24 g C. 32 g 14. Which substance has the greatest molecular mass? A. H2 O 2 B. NO C. CF4 D. 48 g D. I 2 15. Given the reaction: __Ca + __H2 O __Ca(OH) 2 + __H2 , how many moles of H2 O are needed to react with 2.0 moles of Ca? A. 1.0 B. 2.0 C. 0.50 D. 4.0 16. In the reaction __N 2 + __H2 __NH3 , how many grams of H2 are needed to produce exactly 1 mole of ammonia? A. 1 g B. 2 g C. 3 g D. 4 g 17. Given the reaction: __Cu + __HNO 3 __Cu(NO 3 ) 2 + __NO + __H2 O, the total number of grams of Cu needed to produce 1.0 mole of Cu(NO 3 ) 2 is A. 32 B. 64 C. 128 D. 192 18. Given the reaction: __Mg + __HCl __MgCl 2 + __H2 , what is the total number of grams of Mg consumed when 0.50 mole of H2 is produced? A. 6.0 g B. 12 g C. 3.0 g D. 24 g 19. What is the correct coefficient for carbon monoxide in the reaction Fe 2 O 3 + CO Fe + CO 2 ? A. 6 B. 3 C. 5 D. 1 20. Which chemical equation is correctly balanced? A. H2 (g) + O 2 (g) H2 O(g) C. 2NaCl(s) Na(s) + Cl 2 (g) B. N 2 (g) + H2 (g) NH 3 (g) D. 2KCl(s) 2K(s) + Cl 2 (g) 21. In which compound is the percent composition by mass of chlorine equal to 47%? A. HClO B. HClO 2 C. HClO 3 D. HClO 4 22. What is the percent composition by mass of sulfur in the compound MgSO 4 ? A. 20% B. 27% C. 46% D. 53% 23. Which of the following best describes exothermic chemical reactions? A. They never release heat. C. They never occur spontaneously. B. They always release heat. D. They always occur spontaneously. 24. When NH4 NO 3 is dissolved in water, the temperature of the water decreases. When NaOH is dissolved in a separate water sample, the temperature of the water increases. Based on these observations, it can be concluded that the dissolving of A. Both salts is endothermic. B. Both salts is exothermic. C. NH4 NO 3 is endothermic and the dissolving of NaOH is exothermic. D. NH4 NO 3 is exothermic and the dissolving of NaOH is endothermic. 25. Which change of phase is endothermic? A. CO 2 (g) CO 2 (s) B. H2 O(l) H2 O(s) C. I 2 (s) I 2 (g) D. H2 O(g) H2 O(l) 26. Assume that potential energy of the products in a chemical reaction is 60 kilocalories. This reaction would be exothermic if the potential energy of the reactants were A. 50 kcal B. 20 kcal C. 30 kcal D. 80 kcal 27. Which potential energy diagram represents an exothermic reaction? A. B. C. D. 28. A sample of water is cooled from 45ºC to 25ºC by the removal of 83.7 joules of heat. What is the mass of the water? A. 1.0 g B. 2.0 g C. 20 g D. 200 g 29. How many kilojoules of heat are needed to raise the temperature of 500 grams of water from 15ºC to 20ºC? A. 4.2 B. 10.5 C. 41.8 D. 4184 30. If 2092 joules of heat energy are released when 50 grams of water are cooled and the initial temperature is 70ºC, what is the final temperature? A. 41.8ºC B. 80ºC C. 60ºC D. 10ºC Matching: 31. Heat 32. Temperature 33. Law of Conservation of Energy 34. Calorimeter 35. Specific Heat A. A measure of the random motions of the average kinetic energy of a substance. B. A device used to measure the amount of heat absorbed or released during chemical or physical processes. C. Energy that always flows from a warmer object to a cooler object (high concentration to lower concentration). D. In any chemical or physical process, energy is neither created nor destroyed. E. The amount of heat required to raise the temperature of 1 gram of a substance 1⁰C. 36. Given the equation: 18 F 18 O + X, which symbol, when substituted for X, correctly balances the 9 8 equation? 0 0 A. 11 H B. 10 n C. −1 e D. +1 e 37. In the equation X 42 He + 216 At, the element represented by X is 85 A. Fr B. Bi C. Rn D. Ra 38. In the reaction 75 As + X 78 Br + 10 n, X represents 33 35 A. An alpha particle C. A proton B. A beta particle D. A triton 39. Given the reaction 94 Be + 11 H 42 He + X, which species is represented by X? A. 83 Li B. 63 Li C. 85 B D. 10 B 5 40. Given the nuclear equation 11 H + X 63 Li + 42 He, the particle represented by X is A. 94 Li B. 94 Be C. 10 Be D. 10 C 5 6 41. Which element is associated with radioactive dating of old artifacts? A. C-14 B. O-17 C. Al-28 D. none of the above 42. Choose the correct coefficient for the underlined compound. Sodium phosphate and nickel (II) carbonate produce sodium carbonate and nickel (II) phosphate A. 1 B. 2 C. 3 D. 6 43. Choose the correct coefficient for the underlined compound. Aluminum hydroxide reacts with potassium bromide to produce aluminum bromide and potassium hydroxide A. 1 B. 4 C. 2 D. 3 44. Choose the correct coefficient for the underlined compound. NaOH + H2 SO 4 Na 2 SO 4 + H2 O A. 1 B. 2 C. 3 D. 4 45. Choose the correct coefficient for the underlined compound. Mg (s) + O 2(g) MgO(s) A. 2 B. 3 C. 1 D. 4 46. Predict the product, balance the equation, and choose the correct coefficient for the underlined compound. Zinc reacts with hydrochloric acid to produce A. 0.5 B. 2 C. 3 D. 4 47. Predict the product, balance the equation, and choose the correct coefficient for the underlined compound. Ethane (C2H6) combusts A. 6 B. 2 C. 3 D. 1 48. Predict the product, balance the equation, and choose the correct coefficient for the underlined compound. Manganese (VI) oxide reacts with calcium chloride to produce A. 1 B. 6 D. 2 D. 3 49. If 15.0 g of hydrogen reacts with 85.0 g of nitrogen and 10.5 g of NH3 is produced. What is the percent yield of this reaction? 3H2 + N2 2NH3 A. 57.7% C. 33.5% B. 1.73% D. 12.4% 50. Magnesium nitride is formed in the reaction of magnesium metal with nitrogen gas. The reaction of 112 g of nitrogen with 145 g of magnesium produces: 3Mg + N2 Mg3N2 A. 2.0 mol of Mg3N2 C. 4.0 mol Mg3N2 B. 6.0 mol of Mg3N2 D. 1.0 mol Mg3N2 Matching 51. Involves the exchange of cations between two compounds. A. Single Replacement 52. Reaction of a pure element with a compound. B. Synthesis 53. Reaction that consumes oxygen to produce oxygen and water. C. Decomposition 54. The combining of two or more elements to form a single product. D. Combustion 55. A single reactant is broken down. E. Double Replacement 56. 3Mg + N2 Mg3N2 57. 2HCl(aq) + Mg(OH)2(s) MgCl2(aq) + 2H2O(l) 58. Cu + 2AgNO3 2Ag + Cu(NO3)2 59. H2O2 O2 + H2 60. C3H8 + 5O2 4H2O + 3CO2 Chemistry Final Review Answer Sheet Fill in the last five digest of your student ID