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Academic Approach to Chemistry

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1. The C-O-C bond angle (degees) in the compound CH3-O-CH3 is closest to
a. 90
b. 109
c. 120
d. 180

2. Which of the following molecules would be expected to be MOST water soluble?
a. CH3-CH2-CH2-CH2-CH3
b. CH3-CH2-O-CH2-CH3
d. ClCH2-CH2-CH2Cl

3. The relationship between CH3CH2OH and HOCH2CH3 is best described as
a. constitutional isomers
b. geometric isomers
c. unrelated compounds
d. same compound

4. The structure of urea is shown below. The carbon atom in urea is:
O=C(NH2) 2

a. sp3 hybridized
b. sp2 hybridized
c. sp hybridized
d. sp3d hybridized

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Solution Preview

1. The functional group of ether is an oxygen atom bonded to two carbon atoms. In daily ethers, oxygen is sp3 hybridized with bond angles of approximately 109.5°. In dimethyl ether, the C-O-C bond angle is 110.3°. So the answer is B. closest to 109

2. Both b and C have good solubility in water but, ...

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Mixed Methods

This Assignment builds on your knowledge base as you analyze the appropriateness of mixed-methods designs for research and evaluation purposes. Choose two of the three articles assigned for this module. As you read your chosen articles, critique and analyze each study to gain proficiency in understanding the particular mixed-method approach you are reading about. Analyze the appropriateness of each methodology for research and evaluation based on the main mixed-methods strategies discussed in the Creswell reading: sequential, concurrent, and transformational. For example, if you are reading the article that uses a sequential strategy, you might spend some time reviewing Creswell Chapter 10 (pages 208-213), as well as investigating online resources via the Walden University Library and Google Scholar. You may wish to consult your Instructor for guidance on appropriate resources for further investigation.

Write a 4- to 5-page paper comparing the core research components of the studies you chose, making sure to analyze the following for each article:
•The overall mixed-methods strategy or design
•The strategy or design selected for this study
•The problem statement
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•The research questions which addressed the quantitative data and those which addressed the qualitative data (if stated)
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•The data collection and analytic techniques employed. Describe these in detail. ◦The quantitative data collection techniques used
◦The qualitative data collection techniques used
◦Whether the way the data were collected corresponded with the mixed-method strategy used (for example, whether the data were in fact collected sequentially or concurrently)
◦How quantitative data were analyze
◦How qualitative data were analyzed
◦How the quantitative and qualitative data analyses were used to explain the findings

•Ethical issues which might exist with this study and why

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