Category: Chemistry

9. a. Identify the two aldohexoses that are obtained when D-arabinose undergoes a Kiliani–Fischer synthesis. b. Identify the two aldohexoses that will undergo a Wohl degradation to yield D-ribose. Draw a Fischer
projection of the open-chain form for each of these two aldohexoses.

All text must be Times New Roman font,
 Size 12 font for main body text.
 Line spacing should be single spacing. For example this short paragraph which is longer than
it has to be, but necessary in this case, is single spacing.
 Paragraphs should have a minimum of 6 point (or maximum of 1 line spacing). For example,
these short bullet point above have 6 point spacing, whilst below they have one whole line
spacing (of 12 point font).
 Margins must be 1 inch top, bottom and sides.
 Check your subscripts/superscripts. It should be H2O , not H2O, h2o, or any other combination
you can think of.
 References should match ACS style requirements1
(see document on Canvas)
Section Headings should be Size 14 font, bold, underlined
15
16
O
20
O
18 19
13
12
14
17
5
N
9
4
6
7
8
1
3
2
11 10
HO
O
CH3
21
H
Figure 1 All l figures should be numbered and referred to in text as “Figure 1” etc..
Table Table Table
Data Data Data
Data Data Data
Data Data Data
Table 1 All l tables should be numbered and referred to in text as “Table 1” etc

Short Essay 3
Provide a comprehensive description of the following image, including why you need this topic in your everyday life and briefly explain an example reaction. 

Draw the products that are expected when β-D-allopyranose is treated with each of the following
reagents:
a. Excess CH3I, Ag2O b. Excess acetic anhydride, pyridine
c. CH3OH, HCl

I have a chemistry task that starts at 12:30 Pacific time which is in one hour and it must be completed within two hours starting. it is 25 questions and only answers are required no need to show any work. answer must be provided quickly because it is a timed task.

hello I have a general chemistry task that starts at 12:30 pacific time which is in an hour and 30 minutes. it is 25 questions and must be completed with in 2 hours of starting so answers must be provided quickly. only answers are needed no need to show any work.

You were asked to evaluate the results of GPC analysis of PMMA (poly[methyl methacrylate]) polymer. Separation was made on PLGel universal column (styrene-divinylbenzene 100 – 107 separation range), RI detection, and eluent – THF, calibration by polystyrene standards. Weight and number average values were calculated directly from chromatogram. Are the calculated Mwand Mn values, correct? Explain why.
2/ You are separating benzene, toluene and ortho-nitrophenol on RP column with acetonitrile/water as eluent. How the variation of the eluent composition (% of acetonitrile in water) will affect the selectivity between benzene and toluene and between o-nitrophenol and benzene? Explain.

Option 1:
We will begin this topic by practicing the use of the scientific method. The steps of the scientific method are: observation, hypothesis, experiment, results, and theory. Using your understanding of the scientific method from your readings and lessons, you will be applying this knowledge to a real world situation. Take a real world scenario in the news, or another outside source and apply the scientific method, being sure to detail the controls on your experiment.  Describe a result that would confirm your hypothesis.
Minimum of 3 sources cited.
APA format for in-text citations and list of references.

I have to write my undergraduate dissertation, I have a filed uploaded, you just have to summarize the file I have attached. It was written by my grad student that I was following and we worked on the same thing so all I have to do for my dissertation is condense the info that she wrote.

This is the topic: For many of us, springtime also means hay fever season. Typical allergy symptoms are caused by the action of histamines. Try to find the structures of histamine and some common antihistamines. Explain how histamine and antihistamines work and their typical effects on the body.
I attached the assignment instructions below.