I have to determine whether these certain chemicals are polar or not:
Beta- sitosterol
Methyl cinnamate
Lapachol
Ethyl p-hydroxy cinnamate
Betulic acid
3,4,5- trihydroxy-7-methoxy flavone
Veratric acid
p-anixic acid
If there is a website that could make determining whether these compounds are polar or not Id appreciate it.
At one time www.chemfinder.com would allow me to log on, type in the name or formula, and it would display the structure/formula. It had multiple links to guide one to IR spectra, MSDS safety data sheets, m.p., b.p., and much more. Recently, however, that site has not allowed me to log on. It is a commercial site and I expect that just got tired of us freeloaders jamming up their network. You might try that first. Next, I suggest you go to www.google.com and type in the name of each of the chemicals and look at the structure. If you can get the structure I'm sure you will be able to make a determination yourself. Third, you might try looking up each in The Merck Index. I don't think there is a site for it (there may be but if there is I'm sure there is a subscription fee) but most libraries have a copy. I have a copy at home. It's a good addition for chemistry.
Some other tutor may have some other suggestions.
To determine whether these chemicals are polar or not, you can follow these steps:
1. Try using the website www.chemfinder.com. Although you mentioned that it has not allowed you to log in recently, it is still worth a try. This website provides various information about chemicals, including their structures, formulas, and other properties. If you can access it, you can search for each chemical by its name or formula and find its structure. From the structure, you can make a determination on its polarity.
2. If the above website doesn't work, you can use Google to search for each chemical's structure. Simply go to www.google.com and type in the name of each chemical. Look for reliable and reputable sources that provide the chemical structures. Once you have the structure of each compound, you can analyze its symmetry and functional groups to assess its polarity.
3. Another option is to consult The Merck Index. This reference book is commonly found in libraries and contains comprehensive information about chemicals, including their structures and properties. You can search for each chemical in The Merck Index and find its structure. Analyzing the structure will help you determine its polarity.
Remember that determining the polarity of a compound relies on its molecular structure. Polar compounds have an uneven distribution of electronegativity, resulting in the presence of polar bonds or molecular dipoles. Analyzing the symmetry and presence of polar functional groups (such as hydroxyl or carbonyl groups) in the structures can give you an indication of their polarity.
If these options do not work for you, you can consult with other tutors or professionals who might have alternative suggestions or resources to help you determine the polarity of these chemicals.