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Why does methanol have a lower boiling point than ethanol even though ethanol is more polar? Why does ethanol have a higher boiling point than ethyl ether even though ethyl ether has a greater molecular mass?

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Petroleum ether is another organic solvent that is a mixture of simple hydrocarbons obtained by the distillation of petroleum. Would it be classified as polar or non-polar? Only one of the common solvents is denser than water. Which is it? Explain why it makes sense that this solvent should be so dense. Organic liquids A, […]

What happens when you increase or decrease the concentration of the solution at the anode? At the cathode? How did you set up your experiments to definitively make this determination?

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Formal lab report Trial Concentration of [M2+] at anode, M Concentration of [M2+] at cathode, M Ecell . 1 1.00 1.00 1.10 2 1.00 2.00 1.113 3 2.00 1.00 1.084 4 2.00 2.00 1.098 5 0.5 0.5 1.101 What happens when you increase or decrease the concentration of the solution at the anode? At the […]

What would happen if the etched plate remained in the acid bath for a long time?What gas is evolved on the surface of the copper plate when it’s reacting with Acid?

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Engraving is a technique by which decorative patterns or inscriptions are cut into the metal surface with a sharp tool of hardened metal. Etching is a chemical process which removes metal in a controlled manner using an acid to create a design. Etching is similar to engraving, except instead of using a sharp tool, you […]

Which of the following administration routes for drugs is more significantly affected by first-pass metabolism?

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Principles Of Pharmacology Coursework Which of the following administration routes for drugs is more significantly affected by first-pass metabolism? Oral Sublingual Intravenous Rectal Intramuscular Which one of the following is CORRECT? The compound is an inhibitor of adenylate cyclase enzyme The compound is a competitive antagonist of muscarinic receptor The compound is a non-competitive antagonist […]

Determine whether the substituents are electron donating, electron withdrawing and rank the substituents in order of increasing ability to donate electron density into the benzene ring.

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Experimental Report Identify your product, report the amounts of the aromatic reactant  used, the actual yield in g and mol, and the percent yield. Report your observed melting point and the “literature” value from the table below. Table 1. Melting Points of Brominated Compounds 2 .Draw resonance structures for the aniline, anisole, and acetanilide. Determine […]

What would happen to the plaster paste if there was no carbon dioxide in the atmosphere?

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The paints are applied onto the plaster when it is partially dry. What would be the result of applying the paints to a dry plaster? Then the pigments that make up the paint are only going to be on the surface of the plaster. How does the paint get bound to the surface of the […]

What type of study has been used? Is it the best study design to answer the research question? Give reasons for your answers.

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Question 2 The Health Department conducted a study to assess the validity of a new field test for lead exposure, which they wanted to use for a mass screening program. The field test uses a spot of blood from a finger prick sample which is analyzed using a small hand-held machine. The results from the […]

Briefly summarize of what was done in the experiment, what was observed and what you expected to find, and what, if any, problems were encountered.

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Abstract: – One paragraph that summarizes the report – Belongs at the very beginning of the paper, but should be written last – Concise description of the experimental objectives, results, and conclusions Includes why the experiment was performed; what problems were addressed; what major conclusions were found; and what major conclusions were drawn. Does not […]

Describe the VSEPR geometry around at least 3 of the central atoms.Is the shape involved with the function of your molecule?Explain.

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Choose a molecule that you would like to investigate. Be sure that it contains at least 10 atoms. Describe any interesting physical or chemical properties of the molecule and why you chose it. Draw or download an image of the 2-D structure of the molecule. Be sure to cite your source. Describe the VSEPR geometry […]

Compare the IR spectra of the starting materials to the IR Spectrum of your product.

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Experimental Report Report the amounts of the reactants , your yield, and the melting point of your product. Remember, percent yields are based on the theoretical yield of the reaction. Comparing your crude product to your recrystallized product will not provide the “percent yield” for the reaction. Compare the IR spectra of the starting materials […]

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