Chem 104 lab 3 Study guides, Class notes & Summaries

CHEM 104 Experiment 7 Organic Synthesis - Portage Learning Purpose: The purpose of this lab was to determine the process of synthesizing various carboncontaining organic products including aspirin, urea, & salicylic acid. In doing so, we were also able to calculate the percent yield in each of these experiments. Procedure: Part 1: Synthesis of aspirin 1. Placed 2.0 g of salicylic acid & placed it in a flask 2. 5.0 mL of acetic anhydride was then added to the flask & mixed 3. 5 drops of sulfuric...

1. For lower premolars, the purpose of inclining the handpiece lingually is to, A. Avoid buccal pulp horn B. Avoid lingual pulp horn C. Remove unsupported enamel D. Conserve lingual dentine - ANSWER A. Avoid buccal pulp horn Explanation 1- avoid BUCCAL pulp horn 2- conserve ling. dentine So take A and B if available 2. For an amalgam restoration of a weakened cusp you should, A. reduce cusp by 2mm on a flat base for more resistance B. reduce cusp by 2mm following the outli...

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...

Nicole Surman Experiment 3: Titrations and Titration Analyses Title: Titrations and Titration Analyses Purpose: The purpose of this lab is to analyze Neutralization titrations, titrations between an acid and a base. Procedures: The following titrations were conducted in this experiment; strong acid/strong base, weak acid/strong base and strong acid/weak base. In order to perform a titration, a known and unknown material must be present. Determine M of sodium hydroxide by titrating agains...

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...

SOUTH UNIVERSITY NSG6420 WEEK 10 FINAL EXAM (2 VERSIONS) / NSG 6420 FINAL EXAM (NEWEST, 2021): (100 CORRECT Q & A IN EACH VERSION) |100% VERIFIED AND CORRECT ANSWERS| NSG 6420 FINAL EXAM Which of the following is the most common cause of heartburn-type epigastric pain? Question 1 options: a) Decreased lower esophageal sphincter tone b) Helicobacter pylori infection of stomach c) Esophageal spasm d) Peptic ulcer disease Save Question 2 (1 point) An older...

58 Air Pollution - A&O SCI 2 UCLA 4 QTR A AE# A A A A 59 Air Pollution (Lab) - A&O SCI 2L UCLA 1 QTR 60 Art, Science & Technology - DESMA 9 UCLA 5 QTR AA#AA A 61 Disease Mechanisms and Therapies - PHYSCI 121 UCLA 4 QTR C #AA A 62 Diversity, Disagreement & Democracy: Can't We All Just Get Along? - POL SCI 115D UCLA 4 QTR A # A A 63 Diversity, Disagreement & Democracy: How to Succeed in Politics Without Really Trying - POL SCI 60A UCLA 5 QTR AB # A A 64 Earth Planetary and Space Sciences: M...

CHEM 133 LESSON 7 QUIZ AND ANSWERS LESSON 7 QUIZ Question 1 of 25 4.0/ 4.0 Points Consider a sample of gas in a container on a comfortable spring day. The Celsius temperature suddenly doubles, and you transfer the gas to a container with twice the volume of the first container. If the original pressure was 12 atm, what is a good estimate for the new pressure? A. 5.5 atm B. 12 atm C. 3 atm D. 6.4 atm E. 15 atm Feedback: See Chapter 09 Question 2 of 25 4.0/ 4.0 Points A gas sa...

HESI A2 GRAMMAR Practice Test - ANSWERS 1. She sat on the bed with her favorite cat and its head gently. a. petted b. patted c. pet d. pat The correct answer is a. Choice b is not correct because “patted” indicates a tapping motion, rather than a "gentle" stroking motion, indicated by the adverb at the end of the sentence. Choices c and d are not correct because the sentence requires the word “pet in the past tense and as a past participle. 2. Last Friday night, my best fr...

NSG 6420 WEEK 10 FINAL EXAM (2 VERSIONS)/ NSG6420 FINAL EXAM (NEWEST, 2021): SOUTH UNIVERSITY (100 CORRECT Q & A IN EACH VERSION) |100% VERIFIED AND CORRECT ANSWERS| NSG 6420 FINAL EXAM Which of the following is the most common cause of heartburn-type epigastric pain? Question 1 options: a) Decreased lower esophageal sphincter tone b) Helicobacter pylori infection of stomach c) Esophageal spasm d) Peptic ulcer disease Save Question 2 (1 point) An older ...