Organic chemistry lab 1 - Study guides, Class notes & Summaries

Physical properties can be useful toDetermine structure Determine purity of substance If not pure, determine how to separate contaminating substances from a compound What can you get from melting point?Identify and purity of an organic solid. Define melting pointWhen the temperature at which the solid and liquid states are in equilibrium. What's the range at which most organic substances melt?50 - 250 C What's the range at which inorganic substances usually melt?300 - 1500 C What subs...

How should BP of a liquid be reported?As a boiling range How does temperature affect the vapor pressure of a liquid?As temperature increases, vapor pressure increases Suppose you will be distilling 50 mL of an impure liquid. What size of distillation flask(s) should you use?100 and 150 mL What is the purpose of using boiling stones?To relieve minor hot spots on the distillation flask and prevent vigorous eruption of bubbles (bumping) What should be the temperature difference in the liq...

The three principal reasons for determining the mp range of a solid (For what reason(s) would someone be interested in determining the melting point (mp) range of a compound 1) Determination of purity 2) Establishing an unknown solid's identity 3)Reporting new physical property data on a compound never before isolated/made Purpose of this experiment To experimentally determine the effect of impurity (urea) on the mp range of a pure substance Draw trans-cinnamic acid Draw urea

Chapter 1 – The Science of Nutrition Multiple Choice Answer, level, page Level: K = knowledge, A = application/critical thinking What Do We Mean by “Nutrition”? (pp. 5-8) a A 6 1. Which of the following ingredients in a box of toaster pastries would contribute macronutrients to one’s diet? a. Water, high-fructose corn syrup, egg yolk b. Niacin, folic acid, sucralose c. Riboflavin, salt, sodium benzoate d. Thiamin mononitrate, soybean oil, sugar c K 5 2. The term “n...

CHEM 219 Module 1 Problem Set Principles of Organic Chemistry with Lab Gallaher Portage Learning. Score for this quiz: 10 out of 10 Submitted Jul 25 at 8:42pm This attempt took 1,135 minutes. Question 1 0 / 0 pts Your Answer: On a piece of scratch paper, write out the Lewis Dot Diagram for each of the indicated elements and determine the following for each: a) The number of Lone Pairs the atom possesses in its valence shell. b) The number of Unpaired Electrons the atom possesses in its...

CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 CHAPTERS 1-4 KEY TERMS QUESTIONS WITH 100% CORRECT ANSWERS

CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 QUESTIONS WITH 100% CORRECT ANSWERS| GRADED A+

CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 QUESTIONS WITH 100% CORRECT ANSWERS| GRADED A+

CHEM-120:| CHEM 120 INTRO TO GENERAL, ORGANIC & BIOLOGICAL CHEMISTRY WITH LAB EXAM 1 LINDAHL QUESTIONS WITH 100% CORRECT ANSWERS| GRADED A+ 1.Carbon tetrachloride is a non polar molecule that is miscible in benzene. 2.When solid ionic salts are dissolved in water, the system always absorbs energy from the surrounding.

Organic Chemistry Module 8 Portage 219 TEST EXAM FINALS QUESTIONS WITH 100% Verified Solutions. Polymer large molecule made by repetitive linking of smaller units (monomers) Macromolecule very large molecule composed of thousands of covalently bonded atoms (ex: polymer) 1. natural (in nature) 2. synthetic (in lab) two ways polymers are made rubber, carbs: starch & cellulose, proteins, nucleic acids DNA, RNA natural polymers nylon, teflon, styrofoam, polyethylene, Dacron, synthetic pol...