ChemistryHLP1may04 - c 1 hour IB DIPLOMA PROGRAMME...

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CHEMISTRY HIGHER LEVEL PAPER 1 Tuesday 18 May 2004 (afternoon) 1 hour M04/420/H(1)+ IB DIPLOMA PROGRAMME PROGRAMME DU DIPL&ME DU BI PROGRAMA DEL DIPLOMA DEL BI c 224-158 16 pages INSTRUCTIONS TO CANDIDATES ! Do not open this examination paper until instructed to do so. ! Answer all the questions. ! For each question, choose the answer you consider to be the best and indicate your choice on the answer sheet provided.
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87 Fr (223) 55 Cs 132.91 37 Rb 85.47 19 K 39.10 11 Na 22.99 3 Li 6.94 1 H 1.01 88 Ra (226) 56 Ba 137.34 38 Sr 87.62 20 Ca 40.08 12 Mg 24.31 4 Be 9.01 2 & ± 89 & Ac (227) 57 ± La 138.91 39 Y 88.91 21 Sc 44.96 90 Th 232.04 58 Ce 140.12 72 Hf 178.49 40 Zr 91.22 22 Ti 47.90 91 Pa 231.04 59 Pr 140.91 73 Ta 180.95 41 Nb 92.91 23 V 50.94 92 U 238.03 60 Nd 144.24 74 W 183.85 42 Mo 95.94 24 Cr 52.00 Atomic Number Element Atomic Mass 93 Np (237) 61 Pm 146.92 75 Re 186.21 43 Tc 98.91 25 Mn 54.94 94 Pu (242) 62 Sm 150.35 76 Os 190.21 44 Ru 101.07 26 Fe 55.85 95 Am (243) 63 Eu 151.96 77 Ir 192.22 45 Rh 102.91 27 Co 58.93 96 Cm (247) 64 Gd 157.25 78 Pt 195.09 46 Pd 106.42 28 Ni 58.71 97 Bk 65 Tb 158.92 79 Au 196.97 47 Ag 107.87 29 Cu 63.55 The Periodic Table 98 Cf (251) 66 Dy 162.50 80 Hg 200.59 48 Cd 112.40 30 Zn 65.37 99 Es (254) 67 Ho 164.93 81 Tl 204.37 49 In 114.82 31 Ga 69.72 13 Al 26.98 5 B 10.81 100 Fm (257) 68 Er 167.26 82 Pb 207.19 50 Sn 118.69 32 Ge 72.59 14 Si 28.09 6 C 12.01 101 Md (258) 69 Tm 168.93 83 Bi 208.98 51 Sb 121.75 33 As 74.92 15 P 30.97 7 N 14.01 102 No (259) 70 Yb 173.04 84 Po (210) 52 Te 127.60 34 Se 78.96 16 S 32.06 8 O 16.00 103 Lr (260) 71 Lu 174.97 85 At 53 I 126.90 35 Br 79.90 17 Cl 35.45 9 F 19.00 86 Rn (222) 54 Xe 131.30 36 Kr 83.80 18 Ar 39.95 10 Ne 20.18 He 4.00 0 ² 2 ² M04/420/H(1)+ 224-158
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1. How many hydrogen atoms are contained in one mole of ethanol, 25 CHOH? A. 5 B. 6 C. 23 1.0 10 & D. 24 3.6 10 & 2. The percentage by mass of the elements in a compound is . C 72%, H 12%, O 16% === What is the mole ratio of C : H in the empirical formula of this compound? A. 1 : 1 B. 1 : 2 C. 1 : 6 D. 6 : 1 3. What is the coefficient for when the equation below is balanced? 2 O(g ) 38 2 2 2 C H (g) O (g) CO (g) H O(g) + + A. 2 B. 3 C. 5 D. 7 & 3 & M04/420/H(1)+ 224-158 Turn over
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4. How many protons, neutrons and electrons are there in the species ? 26 2 Mg + 12 12 14 D. 10 26 12 C. 10 14 12 B. 12 14 10 A. Electrons Neutrons Protons 5. What is the total number of p orbitals containing one or more electrons in germanium (atomic number 32)? A. 2 B. 3 C. 5 D. 8 6. Which of the physical properties below decrease with increasing atomic number for both the alkali metals and the halogens? I. Atomic radius II. Ionization energy III. Melting point A. I only B. II only C. III only D. I and III only & 4 & M04/420/H(1)+ 224-158
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7. Which of the following oxides is (are) gas(es) at room temperature?
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ChemistryHLP1may04 - c 1 hour IB DIPLOMA PROGRAMME...

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