107 795
Assignments Done
100%
Successfully Done
In September 2024
In September 2024
Your physics assignments can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Physics
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Math
Our experts will gladly share their knowledge and help you with programming projects. Keep up with the world’s newest programming trends.
Programming
Answer to Question #88559 in General Chemistry for Lim Yoona
Question #88559
An indicator can exist in two forms, depending on pH. One form is green, the other blue.
At pH 1, the indicator is entirely in the acid form (green). The absorbance of a 0.01 mol L-1 solution at 650 nm is 0.451.
At pH 10, the indicator is entirely in the base form (blue). The absorbance of a 0.01 mol L-1 solution at 650 nm is 0.131.
At pH 7, the absorbance of a 0.01 mol L-1 solution is 0.362. What percentage of the indicator is in the acid (green) form?
At pH 1, the indicator is entirely in the acid form (green). The absorbance of a 0.01 mol L-1 solution at 650 nm is 0.451.
At pH 10, the indicator is entirely in the base form (blue). The absorbance of a 0.01 mol L-1 solution at 650 nm is 0.131.
At pH 7, the absorbance of a 0.01 mol L-1 solution is 0.362. What percentage of the indicator is in the acid (green) form?
Expert's answer
0.245856354%
Learn more about our help with Assignments: Chemistry
-
![Help me with my assignment!]()
Who Can Help Me with My Assignment
There are three certainties in this world: Death, Taxes and Homework Assignments. No matter where you study, and no matter…
-
![How to finish assignment]()
How to Finish Assignments When You Can’t
Crunch time is coming, deadlines need to be met, essays need to be submitted, and tests should be studied for.…
-
![Math Exams Study]()
How to Effectively Study for a Math Test
Numbers and figures are an essential part of our world, necessary for almost everything we do every day. As important…
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
#339914 on Dec 2023
#339914 on Dec 2023
Comments
Dear Lim Yoona, Questions in this section are answered for free. We can't fulfill them all and there is no guarantee of answering certain question but we are doing our best. And if answer is published it means it was attentively checked by experts. You can try it yourself by publishing your question. Although if you have serious assignment that requires large amount of work and hence cannot be done for free you can submit it as assignment and our experts will surely assist you.
That answer is incorrect
Dear Lim Yoona, Questions in this section are answered for free. We can't fulfill them all and there is no guarantee of answering certain question but we are doing our best. And if answer is published it means it was attentively checked by experts. You can try it yourself by publishing your question. Although if you have serious assignment that requires large amount of work and hence cannot be done for free you can submit it as assignment and our experts will surely assist you. a
Students took 2.5 ml of a leaf extract and using column chromatography they separated carotene from chlorophyll. The students collected carotene in a volumetric flask and made up their sample to the 25 mL line on the volumetric flask with hexane:acetone (3:2). The student measured the absorbance of the purified carotene (collected in the volumetric flask), and found that it corresponded to a concentration of 0.031 mg mL-1. What was the concentration carotene in the original leaf extract in mg mL-1 ?
Leave a comment