Archive for the ‘Chemistry’ Category

How do you identify the bonds in hydrocarbons?

Tuesday, June 1st, 2010
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Jada asked:

Imagine that you are working in a lab, and you find four bottles containing hydrocarbons in the chemical storage cabinet. Outline the step-by-step procedure you would follow to identify which unknown samples have a multiple bond and which have all single bonds.

convertible bonds

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How do you count pi bonds on ring structures?

Thursday, May 27th, 2010
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Journey asked:

My teacher has given us several ring compounds and we have to determine the number of pi bonds. One ring has two double bonds and within the ring there are an oxygen with two lone pairs and a nitrogen with one lone pair. Oxygen is attached by single bonds on the ring while nitrogen is a attached by one single bond and one double bond. Does that make any sense? So its a cyclopentene but two of the carbons have been switched out with an oxygen and a nitrogen. Please HELP!

convertible bonds

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How to figure which bonds are more polar than others?

Friday, May 21st, 2010
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IAA asked:

One of my homework questions is that i have to put the bonds C-l, C-H, C-Cl, C-O, C-F, C-Br in order of polarity with the most polar bond.

Im having a bit of difficulty figuring out what rule to use for this. I have a table of electronegativity values and began by finding the difference between the electronegativty values of the elements in the bonds but i have the answers and this method is wrong. Any help please?

convertible bonds

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How many covalent bonds are present between the carbon atom and each oxygen atom in carbon dioxide, CO2?

Wednesday, May 19th, 2010
Jordan asked:

How many covalent bonds are present between the carbon atom and each oxygen atom in carbon dioxide, CO2?
Alright, that’s what i thought. This online homework i had marked it wrong so i was confused a bit. Thanks!

convertible bonds

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bonds?

Wednesday, May 19th, 2010
Crazyfred02 asked:

What are ionic and covalent bonds. What is the difference between the two?

Thanks a bajillin’

convertible bonds

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