Download Chemistry Exam: Periodic Table and Compound Analysis and more Exams Chemistry in PDF only on Docsity! PERIODIC TABLE 1 3 Li 6.94 11 Na 23.0 19 K 39 1 37 Rb 85.5 55 Cs 132.9 87 Fr (223) _ - .^^__ 4 Be 9.01 12 Mg 24.3 20 Ca 40.1 38 Sr 87.6 56 Ba 137.3 88 Ra (226) 21 Sc 45.0 39 Y 88.9 57 La 138.9 89 Ac (227) 22 Ti 47.9 40 Zr 91.2 72 Hf 178.5 104 Rf (259) 23 V 50.9 41 Nb 92.9 73 Ta 180.9 105 Db 24 Cr 52.0 42 Mo 95.9 74 w 183.9 106 Sg 25 Mn 54.9 43 Tc (97) 75 Re 186.2 107 Bh 26 Fe 55.8 44 Ru 101.1 76 Os 190.2 108 Hs l H 1.008 27 Co 58.9 45 Rh 102.9 77 Ir 192.2 109 Mt 28 Ni 58.7 46 Pd 106.4 78 Pt 195.1 29 Cu 63.5 47 Ag 107.9 79 Au 197.0 30 Zn 65.4 48 Cd 112.4 80 Hg 200.6 5 B 10.8 13 Al 27.0 31 Ga 69.7 49 In 114.8 81 Tl 204.4 6 c 12.01 14 Si 28.1 32 Ge 72.6 50 Sn 118.7 82 Pb 207.2 7 N 14.01 15 P 31.0 33 As 74.9 51 Sb 121.8 83 Bi 209.0 8 0 16.00 16 s 32.1 34 Se 79.0 52 Te 127.6 84 Po 209 1 9 F 19.0 17 Cl 35.5 35 Br 79.9 53 I 126.9 85 At (210) 2 He 4.00 10 Ne 20.2 18 Ar 39.9 36 Kr 83.8 54 Xe 131.3 86 Rn (222) 58 Ce 140.1 59 Pr 140.9 60 Nd 144.2 61 Pm (147) 62 Sm 150.4 63 Eu 152.0 64 Gd 157.3 65 Tb 158.9 66 Dy 162.5 67 Ho 164.9 68 Er 167.3 69 Tm 168.9 70 Yb 173.0 71 Lu 175.0 90 Th 232.0 91 Pa (231) 92 u 238.0 93 Np (237) 94 Pu (244) 95 Am (243) 96 Cm (248) 97 Bk (247) 98 Cf (251) 99 Es (254) 100 Fm (257) 101 Md (258) 102 No (255) 103 Lr (257) CHEM 103, Section 33 (DeVoe) Exam 1 February 28, 2002 YOUR NAME (printed) Circle one of the blocks below to indicate when your discussion section meets (1 point deducted if you fail to circle the correct block): Monday 12 Monday 1 Monday 2 Wednesday 12 Wednesday 1 (3321, 3322) (3317, 3318) (3331, 3351) (3341, 3342) (3337, 3338) Please copy and sign in the box below: I pledge on my honor that I have not given or received any unauthorized assistance on this examination. Signature: Do not write in this space: 1-8 ____716 10-14 ____737 15, 16 ____717 17 ____710 18 ____710 19 ____710 TOTAL ______7100 This exam has a total of 100 points. Please make sure you have all four pages. PART I. Eight multiple-choice questions (2 pts each, 16 pts total). Write the letter (A, B, etc.) of the one best answer for each question on the line at the right. 1. One cubic centimeter is equal to A) 1 L B) 103 L C) 10~3 L D) 103 m3 E) 10~3 m3 __ 2. 2 pg, is the same as A) 2 x ID"9 g B) 2 x 10~6 g C) 2 x 10~3 g D) 2 x 103 g E) 2 x 106 g 3. The term that refers to the reproducibility of a laboratory measurement is A) accuracy B) unit factor C) exactness D) number of significant figures E) precision 4. The mass of one mole of the isotope carbon-12 is A) 6 g (exactly) B) 6 amu (exactly) C) 12 g (exactly) D) 12 amu (exactly) E) 12.01 g F) 12.01 amu 5. Two different isotopes of the same element have the same A) atomic weight B) number of protons C) number of neutrons D) mass number E) molar mass 6. Bromine has only two stable isotopes: bromine-79 and bromine-81. The percent natural abundance of bromine-79 is closest to A) 0% B) 25% C) 50% D) 75% E) 100%
