Chemistry I EXAM 2 VERSION 1 Date October 6 2014 Name Student ID Number Kansas State University has an Honor System based on personal integrity which presumes that students registered at this University will perform their work honestly and without unauthorized assistance As a registered student you acknowledge the jurisdiction of the Honor System and abide by the honor code whether stated explicitly or implied On my honor as a student I have neither given nor received unauthorized aid on this academic work Signature 1 2 Chem 210 CHEM 1 Fall 2014 EXAM 2 Version 1 7 30 p m 8 45 p m 1 2 3 4 5 Print your name and student ID number on the scantron card and fill in the appropriate circles for your ID number Mark your test version number 1 or 2 Please note that if your version number is filled out incorrectly 4 points will be deducted from your exam score Use a soft 2 pencil only and blacken circles completely Mark the one best answer to each question Any question for which more than one response has been blackened will not be counted There are 25 questions 5 choices per question and 4 points per question 1 mol 6 022 x 1023 PERIODIC TABLE OF THE ELEMENTS 1A 8A 1 H 2 2A 3A 4A 5A 6A 7A 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 6 942 9 012 10 81 12 01 14 01 16 00 19 00 20 18 11 12 13 14 15 16 17 18 Na Mg Al Si P S Cl Ar 22 99 24 30 39 95 19 1 008 He 4 002 3B 4B 5B 6B 7B 8B 8B 8B 1B 2B 26 98 28 09 30 97 32 06 35 45 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 39 10 40 08 44 96 47 90 50 94 52 00 54 38 55 85 58 93 58 70 63 55 65 39 69 72 72 59 74 92 78 96 79 90 83 80 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe 85 47 87 62 88 91 91 22 92 91 95 94 98 101 1 102 9 106 4 107 9 112 4 114 8 118 7 121 8 127 6 127 9 131 3 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn 132 9 137 3 138 9 178 5 181 0 183 8 186 2 190 2 192 2 195 1 197 0 200 6 204 4 207 2 209 0 209 210 222 87 88 89 104 105 106 107 108 109 111 Uuu 112 Uub 277 Fr Ra Ac Rf Db Sg Bh Hs Mt 110 Uun 223 226 0 227 0 261 1 262 1 263 1 262 1 265 266 269 272 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 140 1 140 9 144 2 145 150 4 152 0 157 3 158 9 162 5 164 9 167 3 168 9 173 0 175 0 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr 232 0 231 0 238 0 237 0 244 243 247 247 251 252 257 258 259 260 3 1 The Lewis dot symbol for the chloride ion is A Cl B C Cl Cl D E 2 NH4 2CO3 NH4CO3 NH4 2CO4 NH3 2CO3 N2 CO3 3 Which of the following ionic solids would have the largest lattice energy A B C D E 4 Cl The formula of ammonium carbonate is A B C D E 3 Cl NaCl NaI CaCl2 CsI CaBr What is the formula of dinitrogen tetroxide A B C D E N2Te N2O3 Te NO2 2 N2 Te3 N2O4 4 5 Which of these compounds is most likely to be ionic A B C D E 6 How many sulfur atoms are present in 21 0 g of Al2S3 A B C D E 7 35 0 59 6 17 5 60 0 30 0 The molar mass of Cd OH 2 is 146 g mol What is the mass of 1 00 x 102 formula units of Cd OH 2 A B C D E 9 8 42 1022 sulfur atoms 2 53 1023 sulfur atoms 2 14 1023 sulfur atoms 6 02 1023 sulfur toms 6 30 1026 sulfur atoms What is the percentage of nitrogen by mass in NH4NO3 A B C D E 8 GaAs SrBr2 NO2 CCl4 Al 8 51 x 10 25 g 3 24 x 10 24 g 1 67 x 10 22 g 3 24 x 10 22 g 2 42 x 10 20 g Nitrogen and oxygen form an extensive series of oxides with the general formula NxOy What is the empirical formula for an oxide that contains 36 85 by mass nitrogen and 63 15 by mass oxygen 5 10 A N2O B NO C NO2 D N2O3 E N2O5 The percent composition by mass of a compound is 76 0 C 12 8 H and 11 2 O The molar mass of this compound is 284 g mol What is the molecular formula of the compound A B C D E 11 What is the formula for lead II oxide A B C D E 12 PbO PbO2 Pb2O PbO4 Pb2O3 Calculate the number of atoms in 1 89 g of K2CrO4 The molar mass of K2CrO4 is 194 2 g mol A B C D E 13 C10H6O C9H18O C16H28O4 C20H12O2 C18H36O2 9 94 x 10 4 1 17 x 1022 9 69 x 10 3 1 94 x 10 2 4 10 x 1022 atoms atoms atoms atoms atoms Arrange the atoms Se Cl S and F according to increasing electronegativity 6 A B C D E 14 Which of the following lists covalent bonds in order of increasing bond strength A B C D E 15 Al I Si I Al Cl Si Cl Si P The Lewis structure for a carbonate ion CO32 should show single bond s double bond s and lone pair s A B C D E 17 N O N S N Se N Te N S N Se N Te N S N Se N S N Te N O N Te N Se N S N O None of these orders is correct Which of the following bonds is most polar A B C D E 16 Cl F S Se …