Chem ch 11 - Study guides, Class notes & Summaries

Chem 202 Chapter 14 Exam with Questions and Answers What is the acidic equilibrium eq ANSWER HA + H2O = A- + H3O+ What is the basic equilibrium eq ANSWER A- + H2O = OH- + HA Write the acidic equilibrium eq for CH3NH3+ ANSWER CH3NH3+ = H+ + CH3NH2 Write the basic equilibrium equation for C₆H₅NH₂ ANSWER C₆H₅NH₂(aq) + H₂O(l) ⇌ OH⁻(aq) + C₆H₅NH₃⁺(aq) Write the formula of the conjugate acid of CH₃CH₂O⁻ ANSWER CH3CH2OH Write the formula of the conjugat...

1 MODULE 8 PORTAGE 219 ORGANIC CHEMISTRY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ large molecule made by repetitive linking of smaller units (monomers) Correct Answer: Polymer very large molecule composed of thousands of covalently bonded atoms (ex: polymer) Correct Answer: Macromolecule two ways polymers are made Correct Answer: 1. natural (in nature) 2. synthetic (in lab) natural polymers Correct Answer: rubber, carbs: starch & cellulose, proteins, nu...

Chemical Hand Warmers - ANSWER-Most hand warmers work by using the heat released from the slow oxidation of iron 4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) The amount your hand temperature rises depends on several factors: The size of the hand warmer The size of your glove, etc. Mainly, the amount of heat released by the reaction. Nature of Energy - ANSWER-Even though chemistry is the study of matter, energy affects matter Energy - ANSWER-is anything that has the capacity to do work Energy c...

1 FINAL EXAM CHEM 219 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ The speed of a wave (c) is the product of its frequency (ν) and wavelength (λ). Correct Answer: E = hv = h x c / λ nm to m or m to nm Correct Answer: 1 m / 10^9 nm or 10^9 nm / 1 m What is the maximum number of electrons that can have the quantum numbers n = 3, ℓ = 2, mℓ = -2? Correct Answer: The Pauli exclusion principle states that no two electrons in a given atom can share the sa...

CHEM 14C Winter 12 Final Exam Part B Solutions 1. HO O O 2. Influence #1: Resonance causes some or the entire molecule to be planar. Influence #2: Resonance increases stability. Influence #3: Resonance causes electron delocalization. 3. Coplanar The carboxylic acid and ring B have this geometry because it allows for conjugation between the C=O and the B ring aromatic electron cloud. H 4. 5. Ten 6. A, B, and C 7. Of the carbon stereocent...

Air Assault Phase 1 (2022/2023) (Verified Answers) What is the ACL of the LUH-72A in its normal configuration when used for MEDEVAC operations? 2 litters + 1 ambulatory or 5 ambulatory What is the primary use for the CH-47 when used for MEDEVAC operations? Mass Casualty Evac What is the crew of the LUH-72A when not being used for MEDEVAC operations? 3 What is the total length of the high performance utility hoist? 256ft When used for CASEVAC operations, what is the (ACL) for the CH-47? 24 l...

CHEM 14C Winter 12 Final Exam Part B Solutions 1. HO O O 2. Influence #1: Resonance causes some or the entire molecule to be planar. Influence #2: Resonance increases stability. Influence #3: Resonance causes electron delocalization. 3. Coplanar The carboxylic acid and ring B have this geometry because it allows for conjugation between the C=O and the B ring aromatic electron cloud. H 4. 5. Ten 6. A, B, and C 7. Of the carbon stereocent...

Synthesis of Poly(ethyl acrylate) by Single Electron Transfer-Degenerative Chain Transfer Living Radical Polymerization in Water Catalyzed by Na2S2O4 JORGE F. J. COELHO,1,2 ERICA Y. CARVALHO,1 DINA S. MARQUES,1 ANATOLIY V. POPOV,3 VIRGIL PERCEC,4 PEDRO M. F. O. GONC¸ ALVES,2 M. H. GIL1 1Chemical Engineering Department, University of Coimbra, Po´lo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal 2CIRES SA – Companhia Industrial de Resinas Sinte´ticas, Apartado 20, Samoqueiro – Av...

CHEM 102 Winter 18 Final Exam (A) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “A” as your a...

CHEM 102 Winter 19 Final Exam (C) Questions and Answers Potentially useful data: x  1 atm = 760 torr = 760 mm Hg 2 a [A]t = – kt + [A]o ΔG° = ΔH° – T ΔS° ln[A]t = – kt + ln[A]o ΔG = ΔG° + RT ln Q 1/[A]t = kt +1/[A]o ΔG° = – RT ln K First order half-life: t1/2 = ln2 / k ΔG° = – nFE° pH  pKa  log base acid  E  E  R T ln Q n F R = 8.314 J mol-1 K-1 F = 96500 C/mol e- 1. Please choose the letter “C” as your answe...