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Chem 161-2009 Exam I Hill, Petrucci et al. Chapter I – Chemistry: Matter and Measurement Units/unit conversions/dimensional analysis 4. What is the mass (in kg) of a block of magnesium (Density: 1.738 g/cm 3 ) with a volume of 24.3 mm 3 ? A . 4.22 x 10 -5 kg B. 4.22 x 10 -2 kg C. 4.22 x 10 -4 kg D. 4.22 x 10 1 kg E. 4.22 x 10 3 kg 24.3 mm 3 → kg 1 cm = 0.01m 1 mm = 0.001 m 24.3 mm 3 → kg Pl

Ch_2_PP_w__solutions1.docx-Chem 161-2009 Exam I Hill, Petrucci

Chemistry 162 Final Exam May 12, 2014 Student Name (Print): ___Tavss ________________ RuID ________________________ The exam booklet has 25 questions for credit and one additional question to check the color of your exam booklet. Please answer all 26 questions on the OpScan sheet. There is no penalty for guessing. If you do not find the exact answer, bubb

CHEM | 161 | General Chemistry | exam | Chemistry 162 Final Exam May 1

Hess’s Law - Complex CHEM 161-2001 FINAL EXAM WITH ANSWERS 23. Calculate ΔH of the reaction: NO(g) + O(g) → NO 2 (g) Given: ΔH (kJ) (a) NO(g) + O 3 → NO 2 (g) + O 2 (g) -200 (b) O 3 (g) → 3/2 O 2 (g) -143 (c) O 2 (g) → 2O(g) +498 A. +379 kJ B. -562 kJ C. -468 kJ D. +285 kJ E . -306 kJ (1) Focus on the end, i.e., the equation that you are finishing with. Line up equations “a”, “b” and “c” wi

CHEM | 161 | General Chemistry | lecture notes | Hess’s Law - Complex CHEM 161-

4 e) none of them 0 +1 +6 -2 +2 +6 -2 0 Zn( s ) + H 2 SO 4 ( aq ) 2- → Zn 2+ SO 4 2- ( aq ) + H 2 ( g ) +6 ‐ 8 +6 ‐ 8 Oxidation is an increase in oxidation number. Zn went from 0 to +2. It is oxidized. Chem 161-2011 Exam III Burdge and Overby Chapter 9 – Chemical Reactions in Aqueous Solutions Oxidation-Reduction Reaction Concepts, H&P Ch 18 5. Which one of the following reactions is an ox

CHEM | 161 | General Chemistry | lecture notes | 4 e) none of them 0 +1 +6 -2 +

BRONSTED-LOWRY ACIDS & BASES Rx WITH BASES & ACIDS (H 2 O is amphoteric [can act as an acid or base]) ACID + BASE H H — A + :A - + CONJUGATE ACID + BASE H H H R—N—H + R—N: H H BASE + ACID H .. R - N - H + R - N - H + │ H H H CONJUGATE BASE + ACID A: ─ + H─A + H Chem 162-2015 Chapter 17 Tro Acid-Base Equilibria 6 H ·· : O H H : O + hydronium ion H H ·· : O H ·· : O : – + H : O + hydronium ion H H ·· : O H + H ·· : O H ·· :

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