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SAMPLE QUESTIONS FOR THE FINAL EXAM FOR CHEM 2050 1) List the steps that need to be taken to properly perform a recrystallization.
2) What are some of the characteristics of a good solvent for recrystallization? 3) Draw pictures of a reflux, simple distil
Recrystalization:
Choosing a solvent:
1. The substance to be purified must have a high solubility in the solvent at its boiling
point, and a significantly diminished solubility at lower temperatures
2. The solvent should dissolve the impurities at all tem
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Mathematics 1100: College Algebra
Lesson 3: Lines, Functions, and Symmetry
Purpose
The purpose of this lesson is to introduce you to (1) the concepts of increasing, decreasing, and constant functions,
(2) the algebra of functions, and (3) th
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Mathematics 1100: College Algebra
Lesson 4: Linear and Quadratic Equations
Purpose
The purpose of this lesson is to give you experience solving linear and quadratic equations. You will also learn to
model certain real-world problems with suc
Measurement Lab/Excel exercise
Prelab Exercise
Question 1: From the internet, obtain the following information:
Density of zinc: _
Atomic radius of a zinc atom: _
Equation for the area of circle: _
Equation for the circumference of a circle: _
Sources use
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Mathematics 1100: College Algebra
Lesson 2: Equations and Graphs
Purpose
This lesson will introduce you to the Cartesian coordinate system for the plane. You will make use of this system to
give precise meaning to the notion of distance in t
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Mathematics 1100: College Algebra
Lesson 1: Basic Concepts of Algebra
Purpose
This lesson is a review of ideas usually treated in first-year and second-year algebra courses. Most of the material
should be familiar to you. (At the very least,
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Mathematics 1100: College Algebra
Lesson 10: Systems and Sequences
Purpose
The purpose of this lesson is to introduce you to systems of linear equations, arithmetic sequences, and geometric
sequences.
Objectives
After completing this lesson,
http:/www.chem.hmc.edu/chem/nmr/page7.htm
Problem 1 C3H5BrO2 MW = 152
Cl
1 H (s) broad > 10 probably COOH 1 double bond/ring
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Problem 3 C9H12 MW = 120 C9H20 C9H12 = 4 rings/double bonds think aromatic if protons show
CHEM 2130 SS 2011
Instructor: Phil Silverman Email: [email protected] Office: Room 123D Chemistry Phone number: 8821401
Office hours: 11:00 12:00 MTh Welcome to CHEM 2130. There are a few VERY important ground rules that everyone needs to be aware
CHEM 2050/2130 Quiz 1 Review Sheet Review the front material we see in the lab experiments: the "big questions" about this quiz point to "why" and "what" questions: i.e. why do we use . . . . , or what is the purpose of . . . . Recrystallization: Characte