Determine the purity of the recrystallized benzoic acid by determining its melting point and comparing this melting point to the value reported in literature.

Purification of an organic solid by recrystallization

Objective: To purify a sample of benzoic acid contaminated with sand by recrystallization from water

Crystalline state of matter is a highly organized state of matter. To form crystals, the molecules of the substance must arrange themselves in an orderly manner. Any impurity present in the sample of the substance will prevent the orderly organization of molecules of the substance. Thus, a sample obtained in a crystalline form is likely to be a pure substance. A sample of an impure solid substance can be purified by recrystallization.

Recrystallization Method:

Identify the impurity in the sample and the approximate degree of contamination

Identify a solvent suitable for purifying the impure sample of benzoic acid by crystallization. [An ideal solvent for recrystallization for a substance is a solvent that will (1) partially dissolve the substance at room temperature, and (2) completely dissolve the substance while hot . In addition, the hot solution of the substance in the solvent, when cooled will allow the substance to form crystalline solid.]
Separate the impurity by mixing the impure sample with minimum amount of the hot solvent and filtering off the insoluble impurity by gravity filtration.

Allow the filtrate to cool slowly to room temperature or below, for the pure substance to crystallize.

Isolate the recrystallized benzoic acid by vacuum filtration, dry the residue and determine the amount of sample recovered. Calculate the % recovery of benzoic acid

Determine the purity of the recrystallized benzoic acid by determining its melting point and comparing this melting point to the value reported in literature.

Select one of these drugs below,draw the chemical structures, and indicate the binding site/s of your chosen molecules.

Drug discovery

Select one of these drugs below,draw the chemical structures, and indicate the binding site/s of your chosen molecules. These are some you can pick one from (available from the recommended textbook):

Ace inhibitors
Artemisinin and related antimalarial drugs
Oxamniquine
Thymidylate synthase
Anti-inflammatory agents
Antidepressant agents

Once you selected a drug (from the list above)

explain the stages of drug discovery, design and
development (only on your
chosen drug-one of the above list and not in general)

Show the drug binding to its receptor/protein (receptor/proteins can be downloaded from protein data bank) using one of the recommended drug discovery software.

Perform Phvsical properties on your selected drug using the ADMETIab 2.0 website (ADMETIab 2.0 )

A 60% of the total mark is allocated for using the recommended chemistry software, and the rest (40%) will include the write-up and the recent research on your drug of choice.

You should draw all your chemical structures using chemistry software, and no marks will be given for hand drawing.

Harvard style is your reference style. Make sure that all work is correctly cited and referenced. You need to use at least five references.

What additional information about your past experience may aid the selection committee in evaluating your preparation and aptitude for graduate study at UCLA?

Statement of purpose of UCLA

Have finished my draft of my SOP,edit to fit the UCLA program requirement. Respond to the following. Your statement can be up to 500 words in length. You do not need to answer every question; focus on the elements that you feel are most relevant to your candidacy.

What is your purpose in applying for graduate study in your specified degree program? Describe your area(s) of interest, including any subfield(s) or interdisciplinary interests.

What experiences have prepared you for advanced study or research in this degree program? What relevant skills have you gained from these experiences? Have your experiences led to specific or tangible outcomes that would support your potential to contribute to this field (examples: performances, publications, presentations, awards or recognitions)?

What additional information about your past experience may aid the selection committee in evaluating your preparation and aptitude for graduate study at UCLA? For example, you may wish to describe research, employment, teaching, service, artistic or international experiences through which you have developed skills in leadership, communication, project management, teamwork, or other areas.

Why is the UCLA graduate program to which you are applying is the best place for you to pursue your academic goals? If you are applying for a research master’s or doctoral program, we encourage you to indicate specific research interests and potential faculty mentors.

What are your plans for your career after earning this degree?

Describe personal and historical observations of the phenomenon studied,state a problem or ask a question about those observations, form a hypothesis to be tested.

Light Project Report

Describe personal and historical observations of the phenomenon studied,state a problem or ask a question about those observations, form a hypothesis to be tested, briefly describe the demonstration used to collect the data, present the data (using tables and graphs), analyze and interpret the results, and draw a conclusion. At the end of each part, summarize your conclusions, discuss how the demonstrations could be improved, and provide recommendations for future studies. Use any resources that are appropriate, including those already supplied. Just be sure NOT TO PLAGIARIZE and cite resources used using conventional English styles (e.g. MLA or APA style) and list them in the final section. FEEL FREE TO SEEK ADVICE AND TO “PICK MY
BRAIN” WHEN YOU NEED TO.

Part 1. Colors of White Light [100 POINTS] – In this section you will describe how white light is a mixture of individual colors (including the three primary colors of light), how wavelength relates to the color of light, spectral power distribution (SPD) and how it was measured, and the meaning of color temperature (including its application in the lighting industry and photography). Using the data collected, including the SPD graphs, describe any trends shown by the data, and especially how color temperature and SPD are related. Look at where the peak wavelengths are on the SPDs and compare them to the color temperature for that light source. Briefly summarize the major findings and conclusions from Part 1, and provide recommendations for future studies. List references (two or three is sufficient) in standard format (MLA or APA).

Determine chemical names and/or chemical formula for diatomic or simple polyatomic compounds and draw a Lewis structure,construct a molecular geometry and determine the polarity for a covalent compound.

How vitamins and minerals/trace elements affect health/human body (CO 3)

Course Outcomes:

Apply the scientific method to propose a hypothesis and set up an experiment including positive and negative controls and appropriate units of measurement.

Predict the numbers of protons, neutrons, and electrons given the atomic symbol or limited information for a specific isotope of an element and relate them to atomic mass and charge.

Determine chemical names and/or chemical formula for diatomic or simple polyatomic compounds and draw a Lewis structure,construct a molecular geometry and determine the polarity for a covalent compound.

Balance chemical equations, calculate the molar mass of all compounds in the reaction and demonstrate how mole ratios play a role in stoichiometry.

Predict how a change in one or more of the parameters of a gas alters dependent gas parameters such as pressure, volume or temperature.

Calculate the concentration and volume of a solution given solute and solvent parameters.

Predict the properties of and identify reduction and oxidation agents as well as acids and bases by analysis of chemical formulas, chemical reactions, and solution pH values.

Differentiate the common classes of organic functional groups and identify the appropriate common or IUPAC names, applications, and chemical structures for simple organic compounds,

Differentiate between the types of radio-active decay at the subatomic level and provide real-world applications, sources, and risks.

Contrast the synthesis, composition, structure and functions of major biological macromolecules and Illustrate the process of flow of genetic information.

What is the selective targeting of the inactive state of hematopoietic cell kinase (Hck) with a stable curcumin derivative?

What is the selective targeting of the inactive state of hematopoietic cell kinase (Hck) with a stable curcumin derivative?

1-2 pages. What is the main idea of the paper you selected? Summarize what this paper contributes to the knowledge of the topic. Where was this research done? Limit this summary to 2 typed, double spaced pages. Fully cite all of your references, including titles, authors, dates, journal, volume and pages. Do not use quotations. Describe the biochemical paper topic with your own words.

Identify key diagnostic categories of substance use and addictive disorders in the Diagnostic and Statistical Manual.

Write a 750-1,000-word paper examining substance use disorders and co-occurring disorders. Include the following in your paper:

A comparison of the DSM diagnostic criteria of two disorders (one substance use and one co-occurring disorder)
A discussion of the severity and specifiers for the two disorders

Commentary about the importance of a counselor differentiating between the two disorders
Include at least three scholarly sources to support your responses
Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center.

This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

Benchmark Information

This benchmark assignment assesses the following programmatic competency:

BS in Counseling with an Emphasis in Addiction, Chemical Dependency, and Substance Abuse

Identify key diagnostic categories of substance use and addictive disorders in the Diagnostic and Statistical Manual (DSM).