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exam-1 spring 2006

exam-1 spring 2006 - x ’flm 0W" ‘0 3|> C071...

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Unformatted text preview: x . ’flm 0W " ‘0 3| > C071 GENERAL CHEMISTRY ( . EXAM ONE Spring Semester, 2006 TEST CODE 01 (White) PLEASE FOLLOW INSTRUCTIONS CAREFULLY TO ENSURE THAT THE GRADING OF THIS EXAMINATION IS- DONE IN A TIMELY FASHION l. 2. USE # 2 PENCIL ONLY ON YOUR ANSWER SHEET UNDER OPTIONAL CODES, TEST CODE, WRITE IN AND BLOCK # 01. ALSO WRITE THE COLOR OF THE EXAMINATION ACROSS THE TOP OF THE ANSWER SHEET. BLOCK IN YOUR NAME AND YOUR TEMPLE UNIVERSITY IDENTIFICATION NUMBER ON THE ANSWER SHEET. (DO NOT USE SS#) SIGN YOUR NAME ON THE BACK OF THE ANSWER SHEET IN THE PLACE MARKED SIGNATURE. BE SURE TO CHECK YOUR ANSWER SHEET PERIODICALLY TO MAKE SURE YOU ARE FILLING IN THE BLOCKS THAT YOU TNTEND TO. DO NOT LEAVE ANY BLANKS, YOU MAY GET LUCKY. HAND 1N BOTH YOUR ANSWER SHEET AND TEST BOOKLET. Avogadro Nutnbe‘t— 6.02 x 1023 Gas Constant R = 0.0821 L atnn K'] mot" = 8.314 J K“lmol'1 Placnk Constant h = 6.626 x 10'34 Is C = 3.00 x103 tns'1 F = 96,500 C STP 1 atm = 760 mmHg 2 760 Torr = 101.3 kPa and 0°C Kb: 051°C tn" 14f: 1.86°C tn'l If 1. Which one of the following compounds is correctly described as a hydride? A) C0C12'6H20 B) HC2H302 C) NaOH D) CaH2 E) C6H1206 ' nortonite has the formula 2. Engrium sulfat r the formula NathOg. Based on these n of engrium nortonate? A) EnNtO4 B) EnthOa. C) En(NtO4)2 D) En2(NtO4)3 E) En3(NtO4)2 on must be used to separate n, nitrogen, and other components IltS 3. A chemical reacti A) air into oxyge B) a compound into its eleme C) gases from liquids D) a mixture into its components E) solids from liquids 4- The number, 0.02100, is properly expressed in scientific netation as A) 0213:1071 B) 2.1x10-2 C) 2.100x10t2 D) 21.0x10’3 E) 2.10x10t2 5. Silver and antimony are an example of two elements which belong to the same A) class , B) generation C) grade D) group E) period Page 1 6. If a car has an EPA mileage rating of 30 miles per gallon, What is this rating in km LI? 1 liter : 1 dm3, 1 gallon = 3.785 liter, 1 mile = 1.609 mete]; Km A) 13 km L'l ' B) 200 km L" C) 180 km 1:1 D) 70 km L"l E) 11 km L'1 7. A special alloy melts at 874 K. What is this temperature in “F? A) 302 °F B) 365 °F C) 1050 °F D) 1082 °F E) 1114 °F 8. The species, 2131/ , has the same number of neutrons as A) EV B) ifSc C) 2555M)? D) ijr E) 9. The set below featuring one alkali, one alkaline earth, one halogen, and one lanthanide is: A) cesium, barium, bromine, erbium, samarium B) francium, beryllium, iodine, terbium, berkelium C) lithium, manganese, fluorine, lanthanum, vanadium D) potassium, radium, iodine, lutetium, platinum E) rubidium, strontium, chlorine, thorium, plutonium 10. Distillation can readily be used to separate A) the elements in a compound B) a heterogeneous mixture of two solids C) a homogeneous solution of two solids D) iron filings from sugar and salt crystals E) a liquid solvent from a dissolved solid Page 2 11. How many cm3 of water will overflow from a full container of water if a 52.5 gram sample of nickel (density = 8.90 g cm‘3) is carefully placed in the container so there is no splashing, just overflowing? A) 467 cm3 u’ a 4*,“ B) 0.170 cm3 ’ "l . C) 5.90 cm3 4‘ 03.9,.“ f D) 43.6 cm3 ) ; ;;.;:. t; ..... . . ....... E) 61.4 cm3 \ Sag-:3 12. Two elements, Qr and E, combine to form an ionic compound whpsgfonnula is QrEz. Qr also combines with element Z to form an ionic compound, Qr3’22f Based on this information, what is a reasonable value for the charge on E? A) +1 ' B) - 1 C) +2 D) - 2 E) - 3 13. Consider the atoms of 1226Mg and 1237/11 . Both of these species have the same A) number of electrons B) mass C) number of neutrons D) atomic mass number E) number of protons 14. The density of cadmium metal is 8.642 g/cm3. Given that 1 foot(ft) = 12 inches(in), 1 in : 2.54 cm, and 1 pound (lb) = 453.6 g, what is the density of cadmium in lb/ft3? A) 17.70 ib/fi3 rm . 70 B) 141.61b/ft3 .1. .» 4,1,1, , . .3, , C) 244-71b/fi3 1’. 2 f ._ -- ‘43“ .. 5”“ . 1;» D) 263.4 113/113 Q? 5,... _ *5 3"“.3 r ; ”a W”, ,1, a B) 327.7 lb/ft3 3 m, :3” ”v.91“? 15 . Which one of the following is a physical change? A) when ignited with a match in open air, paper burns B) in cold weather, water condenses on the inside surface of single pane windows C) when treated with bleach, some dyed fabrics change color D) when heated strongly, sugar turns dark brown E) grape juice left in an open unrefrigerated container turns sour Page 3 16. The two major types of pure substances are A) compounds and elements B) compounds and solutions (1 mixtures C) elements an D) mixtures and solutions E) solutions and elements D) numbers of neutrons E) numbers of protons s the correct name for the com 18. What i pentoxide A) diVanadium B) vanadic oxide C) vanadium(V) oxide D) vanadiurn(V) pentoxide E) vanadous oxide 19. An alkaline earth element, which we halogen, which we will represent by the symbol Q. What would be of the resulting compound? while sodium nortonate has the 20. Vitelliurn phosphate has the formula, Vi3(P04)2, Which of the following would be the expected fo formula, NathO4. nortonate? A) ViNt04 B) VithO4 C) Vi(Nt04)2 D) Viz(Nt04)3 E) V13(Nt04)2 Page 4 rmula for vitellium 21. 22. 23. 24. What is the correct name for the compound 012803? A) copperfl) sulfite B) copper(lI) sulfite C) copper thiosulfate D) cuprous sulfate E) dicopper sulfur trioxide On a day in the summer of 1992, the temperature fell from 98 °F to 75 °F in just three hours. The temperature drop expressed in celsius degrees (CO) was A) 13 (3° B) 41 C° ' C) 45 C° D) 9 C" E) 75 C" When the chemical equation,zAsF3 +3CC14 —> 'zAsCl3 +3CC12F2, is correctly balanced so that the number of atoms of each kind on the reactant side equals the number of atoms of that kind on the product side, the sum of the smallest set of integer coefficients will be A) 4 B) 5 C) 10 D) 14 E) 20 The density of copper metal is 8.92 g/crn3. Given that l foot(ft) = 12 inchesfin), 1 in = 2.54 cm, and 1 pound (lb) = 453.6 g, what is the density of copper in lb/ft3? A) 18.31b/ft3 a '7 lé/l’r B) 1461b/ft3 .. -: we) C) 253 lb/ft3 w Maj D) 272 lb/ft3 w J :7 -; . 29¢ _,. E) 3171b/ft3 ., 3- ‘ 5 . 'H- Hum (.912 \l") ‘ 2 5' __f~fi‘_w , WW.-. mnnwwww ' ”dun-u . ,.. “[1. A] {Sam/‘3 “F5553 ’H‘ '5 1' t1 Page 5 25. A naturally occurring element consists of three isotopes. The data on the isotopes: isotope #1: 146.9672 u, 64.792% isotope #2: 148.9638 u, 26.117% isotope #3: 149.9592 11, 9.0910% What is the average atomic weight of this naturally occurring element? A) 49.254 u B) 147.76 u C) 148.63 11 D) 148.67 11 B) 147.80 11 Page 6 ...
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