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exam 1 key - CH101.001(Blackstockl 808 Exam 1 February 4...

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Unformatted text preview: CH101.001 (Blackstockl 808) Exam 1 February 4, 2008 name: (print) 91L?) honor pledge: (sign) Part I. Multiple choice questions (3 pts each, 75 pts). Enter answers on the scantron sheet. l. Which of, the following is not an 81 base unit? A) kelvin @@ D) ampere C) ki ogram E) second 2. If 0.586 kg of bromine occupies 188 mL what is the density of bromine in g/mL? A) .00312 g/mL KM-~-Ma ) QC: fit. 9?. 219m?) 31 1» B) 0312 g/mL (:13) 312 g/mLB t it)“ (W; > 3/ C) 4.53 g/mL E) o 321 g/mL WWW-Ms m 2 3 t “fl 1M... “$3 ML 3. How many significant figures are there in 0010690 A) 7 B) 6 D) 4 \ ’3 (CD 4. The temperature at which ”F = °C is 6F: 3; 355 CC 1. 32 ”“40 “—5": 1 ‘9 F 5 A) -32 °F Bth D)273K leféx +32 , _ o :. g3 ’C)233K E)40K Z73 40C 2 K KC. ~. '32 ; [)3 )< ' . . » so x 5. “SA/£1.92“ of the following are examples of 1ntens1ve properties? A) density B) volume D) none of the above C) mass E) all of the above 6. Which if the following is a false state about energy? A) energy can be converted from one type to another B) the total energy of a system remains constant C energy is the capacity to do wo1l< ) potential ener is associated with the motion of particles ,1 E) systems tend towardm lower potential energy 7. The volume of an object with mass of 455.6 g and a density of 19.3 g/cm3 is: A) 97.9 mL Aw 3 B) 42.4 mL D) 23.6 mL 1. , g (3)185 mL E)3l. in (435403“ . m a) : 2.3a film J 161.3 g : 23¢; ML name (print): scantron score written part score = h total 8. How many mg does a 433 kg sample contain? A) 4.33 x 10:1ng ”133.433-231.1flgflé {433 4‘ (”1ng Egg: m3 .5 113.3) y $51.13 B) 4.33 X 10 mg E) 4.33 X 10 mg “ t “’f i g, C 4 3“ 10'3 W” W“! 6‘43 1 2/ 1? ).3X mg / :0‘33Yiofi‘q 9. A US barrel is 4.21 cubic feet. Express this volume in liters. (1 in = 2.54 cm) 1‘ g g 1 ‘ A)3.99><1073L 3\ \ \a . is)- 1 t... \ B) 1.99 x10’2L D) 105 L (11.2% it M13313...) 3.;ng (fl .. 7:) C) 19.9L E)119L ! ~14 i in l ‘1‘“ We” 1 113 L Match the term to its proper number: 10. kilo c. A) 10'9 B) 10‘6 C) 103 D) 10" E) 1012 11.tera E 12. nano k 13. micro B 14. The average mass of a blueberry is 0.75 g and the mass of an auto is 2.0 X 103 kg. How many autos are required to equal the mass of 1 mole of blueberries? 25 A éflmutos [0353/ Wlwz’l MO H3) (Wm B) 2.3 x1017 autSE‘) D) 2.3 x 1018 autos WW“) 1 mt 2.0x1053 C) 2.3 x10 autos E) 2.7 >4103 autos :: 2,7333 A {OHWS ALAN ' wer gives the correct number of significant figures for: (433.621 - 3339) X 11.900 2 113 £231 <A)1.19x103 33.12.) B)1.187x103 D)1.18680x103 C)1.1868x103 E)1.186799x103 New“? 121.175.711.191) element is defined by: protons=11, neutrons=12, electrons=11 < A) sodiur?) B) vanadium D) titanium C) magnesium E) chromium 17. Give the correct atom content for 37C1. (listed as protons / neutrons / electrons) A) 17 / 19/ 17 B 17/18/11 D)17/20/18 C)l7/20/17 E)18/l9/17 l , hat is the following species? protons247, neutrons=60, electrons=46 A) Ag+ B) Nd D) Ag C) Pd E) Pd+ 19. Which of the following is an alkaline earth metal? A) cesium B) copper D) titanium C) magnesium) E) bromine 20. Determine the average atomic mass for an element with the following isotopes present at the indicated natural abundance. mass:— 106.90509 amu (5l.84%) mass: l08.90476 amu (48.46%) A) 107.90 amu B) 108.00 amu D)__108. 32 amu C) 107.79 amu CE) 10% (353M QOZZX fijfiifimsji 21. How many iron atoms are contained in 354 g or iron? 5 SS ‘M'l j A) 2.62 X l023 Fe atoms ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, B) 2.13 x1026 Fe atoms D 3. 82 x 1024 Fe atoms :. 3 33,2 x to” C) 4.69 X 1024 Fe atoms E) 9.50 X 10 Fe atoms ' 22. What is the formula for stannous cyanide? A) SnCN «WWMNK B) Sr(CN)2 < D) Sn(CN)2> C) Sr(N3)2 E) Sn(CN)4 23. Which of the following pairs of elements would be most likely to form an ionic compound? 13.32.13.933; <B)Naand0 ) D) Mg andK. C) C and N E) Cl and Br 24. The chemical name of HC102 is A) hydrochloric acid WMWWWN B) chloroform D chlorous acid C h d ' d‘ 11 'd E hl d ) y rogen ioxymori e )c oric ac1 mlmwss : 2.04.0057 fifiuab‘r Aogmwgmh : 02.0” 3/30! 25. How many N204 molecules are contained in 76.3 g N204? A) 5.54 X 1025 molecules l 012 X102; B) 7.26 x 1023 molecules (Burg, 5/1933 mgrgguies '75 3 it )w-L M” if MES-53““ C) 1-38 X 1024 mOlecules .E) 4.99 X 1023 molecules ) in mtg : Lift?) X ”323 wleudes II. Short Answer Section (25 pts) Provide written answers to the following questions (write neatly please - legibility counts!) 1. (6 pts) List the number and type of each subatomic component of a Tritium atom: “WA-«Mm : 3 H i gmiarx ‘ ZMJVMS {MM 2. (8 pts) Write the formula for each of the following: a. cupric nitrate Cm (5150;) . b. chromic oxide 1:5"? C312 c. nitric acid H ”(33 d. sulfurous acid H 2 §G3 3. (8 pts) Name the following compounds: a. HgO MQTQwrj (II) oxide: 13- CaHZ C9£\C}\KKW\E {iv/MORE 0“ me rework: oxide c. CH4 mm d. PC15 ‘lblwggw Miriam 4. (4 pts) Show the equation used to calculate the molar mass of acetic acid (CHgCOzH) and provide the molar mass to 4 significant figures. \ A) Molar motes gag); : 2 ( 12.011 MM?) 1% 1+0.an gluon + 2. (mm max} 1» :2 (961.052. fi/ml : 03“” W \ W extra credit: 5. (4 pts) Show a single equation with units for the calculation of the number of acetic acid molecules in 10.0 g of acetic acid and include the answer with units in the equation (use above molar mass of acetic acid from above determination). i 03d (m 60. 032. :5 (gm 022K 10 JW 3 WC) X “>239 :flma scratch sheet and periodic table PEREODIC TABLE G ROUP I A II A 111 A IV A V A VI A, VII A *“V‘ III A—~—> I B 11 E III, B [V B V B VI B VI] B VIIIB 2, Nonmetals d Transition Eiementa 204 38 20320 [253]“; f _ »i Gas :34— Aiomic Number . . 39 Liqmd :3”; 7696 Aiom‘cma53(g mor‘) 1‘ Transition Elements *Lanthanides 61 - 55 (Rare Earths) Pm Th 1:14am} ' , ,. . 15883 Ml’kctinidas From Prinapias of Elecfmnic materials and Devices; Seam/7d EleixG/"I, S. O. Kasai: (EC: McGraw-Hill, 2002} http://Materials. Usask. Ca ...
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