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Unformatted text preview: lin (el8462) Sample Exam Three Shear (51145) 1 This print-out should have 28 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. DrRuth says: In all cases, select the answer that BEST answers the question asked. All questions on this sample exam are worth the same number of points. On the real exam, the harder/longer questions will be worth more points. Read the whole thing first and plan which to answer first because you feel confi- dent about them. Notice the harder ones and save them up till last so you dont use up all your time working on them. Unless otherwise stated, assume the gases in all questions are ideal. Shear 51145 General solubility guidelines: 1) Most sodium, potassium and ammonium compounds are soluble in water. 2) Most nitrates, acetates and chlorates are soluble. 3) Most chlorides are soluble, except those for silver, mercury(I) and lead. Lead(II) chlo- ride is soluble in hot water. 4) Most sulfates are soluble, except those of barium, strontium and lead. 5) Most carbonates, phosphates and sili- cates are insoluble, except those of sodium, potassium and ammonium. 6) Most sulfides are insoluble, except those of calcium, strontium, sodium, potassium and ammonium. g = 9 . 8 ms 1 1 atm = 101325 Pa = 760 torr Effusion rate of gas 1 Effusion rate of gas 2 = radicalbigg M 2 M 1 Effusion rate at T 1 Effusion rate at T 2 = radicalbigg T 1 T 2 KE avg = 3 2 RT R = 0 . 08206 Latm K 1 mol 1 R = 0 . 08314 Lbar K 1 mol 1 R = 8 . 314 J K 1 mol 1 v RMS = radicalbigg 3 RT M parenleftbigg p + an 2 V 2 parenrightbigg ( V- nb ) = nRT 001 (part 1 of 3) 10.0 points DrRuth says: Remember not to round your answer, but enter all digits. Part 2 is looking for an answer in units of moles. Part 3 is looking for an answer in units of grams. A mixture of 10 . 908 g if iron(II) oxide and 6 . 155 g of aluminum metal is placed in a crucible and heated in a high temperature oven, where a reduction of the oxide takes place: 3 FeO(s) + 2 Al( ) 3 Fe( ) + Al 2 O 3 (s) ....
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This note was uploaded on 04/02/2012 for the course CH 301 taught by Professor Fakhreddine/lyon during the Spring '07 term at University of Texas at Austin.
- Spring '07