Which one is better to use to extract beta-carotene from carrot acetone or ethanol? is there...
Which one is better to use to extract beta-carotene from carrot acetone or ethanol? is there a better solvent to use to extract beta-carotene, if so, what is it?
Homework Answers
Beta-carotene can be extracted from.carrots using any of these polar solvent. Acetone and ethanol both are polar.
Using any of these will guarantee a good yield and proper extraction. Sometimes even a mixture of these two solvents is used.
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Which one is better to use to extract beta-carotene from carrot
acetone or ethanol? is there...
if use ethanol as solvent to extraction，the hydrophobic compound easy to extract or hydrophilic compound easy to extrac...
if use ethanol as solvent to extraction，the hydrophobic compound easy to extract or hydrophilic compound easy to extract？compare with methanol
9.58 (SYN) Which solvent-ethanol or dimethyl sulfoxide - would be better to use to carry out the reaction shown her...
9.58 (SYN) Which solvent-ethanol or dimethyl sulfoxide - would be better to use to carry out the reaction shown here? Why?
Please show any work that you can!! This is all the info that is given, What...
Please show any work that you can!!
This is all the info that is given, What info is missing??
Problem #10: (20 points) 7. A student separated the pigments from spinach extract using column chromatography. The B-carotene fraction was 10 mL, but when the student measured the absorption at 455 nm, it was greater than one so the student decided to dilute the sample. The sample was diluted by taking 1 mL of the B-carotene fraction and diluting it to...
Pre lab Introduction Your instructor has prepared an extract of chloroplast pigments from fresh green grass...
Pre lab
Introduction Your instructor has prepared an extract of chloroplast pigments from fresh green grass or fresh spinach. A blender was used to rupture the cells, and the pigments were then extracted with acetone, an organic solvent. Work- ing with one other student, begin this exercise by separating the pigments extracted using paper chromatography. To do this, you will apply the pig- ment extract to a cylinder of chromatographic paper. You will then place the ylinder in a jar...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why?...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why? Draw the complete mechanism of this reaction using generic base B. CI
Why is it better to use a linear fit to extract k instead of calculating it...
Why is it better to use a linear fit to extract k instead of calculating it from a single value?
How polarity of solvent affects the Rf in paper chromatography(in plant pigment chromatography)? The plant sample...
How polarity of solvent affects the Rf in paper chromatography(in plant pigment chromatography)? The plant sample we use is Spanish which contains chlorophyll a, b, carotene and xanthophyll. The solvent using is petroleum ether and acetone. Acetone is a bit polar than petroleum ether, so what would happen to Rf if I change the proportion of petroleum ether and acetone, for example, change from 9:1 to 1:9 or even 10:0 and 0:10. If you can give the reference then that's...
In yeast, ethanol is produced from glucose under anaerobic conditions. A cell‑free yeast extract is placed...
In yeast, ethanol is produced from glucose under anaerobic
conditions. A cell‑free yeast extract is placed in a solution that
contains glucose....
Thank you!!!!
In yeast, ethanol is produced from glucose under anaerobic conditions. A cell-free yeast extract is placed in a solution that contains 3.00 x 10 mmol glucose, 0.40 mmol ADP, 040 mmol P. 0.80 mmol ATP, 0.20 mmol NAD*, and 0.20 mmol NADH. It is kept under anaerobic conditions. What is the maximum amount of ethanol (in...
how to do this problem An Extraction-Distillation Process A mixture containing 50,0 wt% acetone (A) and...
how to do this problem
An Extraction-Distillation Process A mixture containing 50,0 wt% acetone (A) and 50.0 wt% water (W) is to be separated into two streams-one rich in acetone and the other in water. The separation process consists of extraction of the acetone from the water into methyl isobutyl ketone (MIBK or M), which has a much higher affinity for acetone than it does for water. The process is shown schematically below. M (solvent) M (solvent) Feed Raffinate 1...
In this exercise, you will use two reagent mixtures to test a variety of organic halides....
In this exercise, you will use two reagent mixtures to test a variety of organic halides. The distinct differences in the factors affecting the SN2 and SN1 mechanisms make it possible to determine which mechanism is favored by a given compound. One reagent and solvent favors SN2 reactivity, the other SN1 reactivity. From the results of your tests, you will determine which mechanism, if either, is favored by a given compound. In your post-lab assignment, you will be required to...
9.58 (SYN) Which solvent-ethanol or dimethyl sulfoxide - would be better to use to carry out the reaction shown here? Why?
Please show any work that you can!!
This is all the info that is given, What info is missing??
Problem #10: (20 points) 7. A student separated the pigments from spinach extract using column chromatography. The B-carotene fraction was 10 mL, but when the student measured the absorption at 455 nm, it was greater than one so the student decided to dilute the sample. The sample was diluted by taking 1 mL of the B-carotene fraction and diluting it to...
Pre lab
Introduction Your instructor has prepared an extract of chloroplast pigments from fresh green grass or fresh spinach. A blender was used to rupture the cells, and the pigments were then extracted with acetone, an organic solvent. Work- ing with one other student, begin this exercise by separating the pigments extracted using paper chromatography. To do this, you will apply the pig- ment extract to a cylinder of chromatographic paper. You will then place the ylinder in a jar...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why? Draw the complete mechanism of this reaction using generic base B. CI
In yeast, ethanol is produced from glucose under anaerobic
conditions. A cell‑free yeast extract is placed in a solution that
contains glucose....
Thank you!!!!
In yeast, ethanol is produced from glucose under anaerobic conditions. A cell-free yeast extract is placed in a solution that contains 3.00 x 10 mmol glucose, 0.40 mmol ADP, 040 mmol P. 0.80 mmol ATP, 0.20 mmol NAD*, and 0.20 mmol NADH. It is kept under anaerobic conditions. What is the maximum amount of ethanol (in...
how to do this problem
An Extraction-Distillation Process A mixture containing 50,0 wt% acetone (A) and 50.0 wt% water (W) is to be separated into two streams-one rich in acetone and the other in water. The separation process consists of extraction of the acetone from the water into methyl isobutyl ketone (MIBK or M), which has a much higher affinity for acetone than it does for water. The process is shown schematically below. M (solvent) M (solvent) Feed Raffinate 1...
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