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Organic Chemistry Forum / Re: Essential Oil(s) in Rosemary
« Last post by Borek on May 13, 2024, 02:17:51 PM »
I gave chiralic a molesnack, nice help

Yes, nice answer to an 18 years old post , dug out by a newcomer necroposter, probably using ChatGPT to generate reasonably looking answer ;)
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Analytical Chemistry Forum / Re: Spontaneous Process?
« Last post by Babcock_Hall on May 13, 2024, 12:55:10 PM »
Under the assumption that the membrane potential is zero, moving potassium ions from outside to inside is non spontaneous.
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Organic Chemistry Forum / Re: Essential Oil(s) in Rosemary
« Last post by rolnor on May 13, 2024, 12:37:12 PM »
 I gave chiralic a molesnack, nice help
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Analytical Chemistry Forum / Re: Calculation of %Absorbance
« Last post by Corribus on May 13, 2024, 09:40:45 AM »
If the percent transmitted is X, then the percent absorbed is 100-X (with certain assumptions).
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Analytical Chemistry Forum / Re: Spontaneous Process?
« Last post by serotonin on May 13, 2024, 07:55:46 AM »
Thank you again so much for the reply. So I have also thought of saying it is favourable but to the left. When it is forward it is non-spontaneous. Also is saying it is electrolytic correct? Sorry if I'm asking too much, I do indeed have my exam today.. :'/ thank you again i appreciate your replies
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Analytical Chemistry Forum / Re: Spontaneous Process?
« Last post by Babcock_Hall on May 13, 2024, 07:30:46 AM »
A particularly important enzyme in brain cells and in intestinal epithelial cells is the sodium potassium ATPase.  Using ATP hydrolysis, this enzyme transports three sodium ions from inside to outside of the cell and two potassium ions from outside to inside the cell.
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Analytical Chemistry Forum / Re: Calculation of %Absorbance
« Last post by NotSoSure on May 13, 2024, 07:13:45 AM »
Thank you for your reply... Is there any chance you help me with the equation I need..My exam is in 2 hours :'/ thanks again . Or should I 100-10?
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Analytical Chemistry Forum / Re: Spontaneous Process?
« Last post by NotSoSure on May 13, 2024, 07:12:12 AM »
Hey thank you for your reply. If it needs a source could I say that it is probably an electrolytic cell? I have my exam in 2 hours and I'm still not sure how to answer this:'/ thanks again
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Organic Chemistry Forum / Re: Essential Oil(s) in Rosemary
« Last post by abdul56 on May 13, 2024, 06:24:55 AM »
Yes, there are several resources available that discuss methods of isolating essential oils from plants like rosemary and utilizing infrared (IR) spectroscopy for analysis. Here are some suggestions:

Books:

"Essential Oil Extraction and Analysis: A Detailed Overview" by Lisa Latimer. This book provides comprehensive information on various extraction methods for essential oils, including steam distillation, solvent extraction, and more. It also covers analytical techniques such as IR spectroscopy for the analysis of essential oils.
"Essential Oils Handbook: All the Oils You Will Ever Need for Health, Vitality, and Well-Being" by Jennie Harding. While not specifically focused on extraction methods, this book offers insights into the properties and uses of various essential oils, including rosemary, which can complement your understanding of their extraction and analysis.
Websites:

The American Oil Chemists' Society (AOCS) website (www.aocs.org) offers a range of resources related to essential oil extraction and analysis, including publications, conferences, and technical resources.
The International Society for Horticultural Science (ISHS) (www.ishs.org) provides access to scientific research papers and conference proceedings related to plant extraction techniques and analytical methods such as IR spectroscopy.
Research Papers:

Search academic databases such as PubMed, Google Scholar, or Scopus for research papers on "rosemary essential oil extraction" or "IR spectroscopy analysis of rosemary essential oil." Many research articles delve into specific extraction methods and analytical techniques for essential oils, including IR spectroscopy.
Online Courses or Tutorials:

Look for online courses or tutorials on analytical techniques in chemistry or aromatherapy. Websites like Coursera, edX, or Udemy might offer relevant courses that cover essential oil extraction and analysis using IR spectroscopy.
Professional Organizations:

Explore professional organizations related to analytical chemistry, aromatherapy, or essential oil industries. These organizations often provide educational resources, conferences, and networking opportunities where you can learn more about essential oil extraction and analysis techniques.
By exploring these resources, you should be able to find valuable information on isolating rosemary essential oil and using IR spectroscopy for its analysis.
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Analytical Chemistry Forum / Re: Spontaneous Process?
« Last post by Babcock_Hall on May 12, 2024, 05:36:47 PM »
A couple of things:  active transport requires an energy source, and with charged molecules, one has to take into account both concentration and membrane potential to assess whether the process is favorable or unfavorable thermodynamically.
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