142sample_exams_142_exam_review_key

142sample_exams_142_exam_review_key - 9 62.6 L 10 266.6 g...

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Old exam question key Chapters 1-3 1) b 2) b 3) 0.376 in 3 4) 18 O C 291 K 5) 10.7 kg 86.4 cm 6) +2 20 20 18 7) c 8) 35.9 9) sodium acetate ammonium chromate nitrogen dioxide phosphorus pentachloride 10) cobalt(II) sulfate pentahydrate potassium perchlorate hydrogen fluoride chromium(III) hydroxide 11) KNO 2 NH 4 CN ClO HClO 2 12) d 13) 3 Ca(OH) 2 + 2H 3 PO 4 Æ 6 H 2 O + Ca 3 (PO 4 ) 2 2 C 6 H 6 + 15 O 2 Æ 6 H 2 O + 12 CO 2 14) b 15) 147 g 16) 77.8 % 17) 51.17 % 18) d Chapters 4-5 1) c 2) 253 mL 3) a) CO 3 2- + 2 HF Æ H 2 O (l) + CO 2 (g) + 2 F - b) Pb 2+ + 2 Cl - Æ PbCl 2 (s) 4) a 5) a) +3 b) +5 c) -3 d) +5 6) O 2 is reduced and is the oxidizing agent 7) 4 Zn + 7 H 2 O + N 2 O + 8 OH - Æ 4 Zn(OH) 4 2- + 2 NH 3 8) 4.4 atm
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Unformatted text preview: 9) 62.6 L 10) 266.6 g 11) 110.7 g 12) b 13) c 14) 433.5 g/mol Chapters 4-5 1) b 2) e 3) a 4) c 5) b 6) d 7) b 8) H 2 CO 3 HSO 3-9) BrO 3-H 2 O Br-10) b 11) 10.23 7.00 12) d e c 13) 11.38 14) 4.88 15) PO 4 3-16) 9.91 17) base 7.94 x 10-11 18) 2.40 100 mL 19) 52 20) Add ammonia as a ligand: Cu 2+ + 4 NH 3 Æ Cu(NH 3 ) 4 2+ Add strong acid: CuSO 3 + 2 H + Æ Cu 2+ + H 2 O + SO 2 21) 1.26 x 10-4 M 22) 1.59 x 10-6 M 23) Q = 1 x 10-7 > Ksp [Ca 2+ ] = 1.34 x 10-3 M [F-] = 3.16 x 10-4 M [Cl-] = 8.0 x 10-3 M 24) Tl then Fe then Al hydroxides...
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142sample_exams_142_exam_review_key - 9 62.6 L 10 266.6 g...

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