some grass is crushed and mixed with the solvent , propanone. The color pigments are extracted...
some grass is crushed and mixed with the solvent , propanone. The color pigments are extracted to give a deep green solutions. describe how you show that there is more than one coloured pigment in the green solution.
Homework Answers
One way to show is to run a TLC (thin layer chromatography). Different spots on developed TLC plate corresponds to different color pigments.
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some grass is crushed and mixed with the solvent , propanone.
The color pigments are extracted...
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...
-Give a brief background on the role of pigments in photosythensis. -state your hypothesis. -finish with...
-Give a brief background on the role of pigments in
photosythensis.
-state your hypothesis.
-finish with stating the rationale for your hypothesis (how
did you arrive at these hypothesis?)
this is an introduction piece, so it doesn't need the results to
write the papee. introduction sections set up the background,
purpose, rationale, and hypothesis for a study.
Biod 20 PHOTOSYNTHESIS Background Plants harness the energy of the sun through a process called photosynthesis. The leaf is the plant organ that...
1. Describe the four main green solvents. Provide one example of the use of each solvent....
1. Describe the four main green solvents. Provide one example of the use of each solvent. (10marks) 2. Describe the Beckman rearrangement of cyclohexanone oxime and the formation of ε‐caprolactamium hydrosulfate. (6marks) 3. Explain how liquid‐liquid biphasic chemistry works and give an example of a biphasic system. (6marks) 4. Describe the problems with fluorous solvents. How might some of these problems be overcome? (6marks) 5. Your supervisor has just told you to synthesize a new chemical. How would you choose...
How is the solvent in D more polar than A? D. Time for 10% Solvolysis of...
How is the solvent in D more polar than A?
D. Time for 10% Solvolysis of 2-chloro-2-methylpropane in a Different Solvent System Pipet 2.00 mL of the 0.1 M 2-chloro-2-methylpropane solution into a 50-mL Erlenmeyer flask. Place the flask on a sheet of white paper. This will aid you in observing color changes. Into another 50-mL Erlenmeyer, pipet 0.20 mL of the NaOH solution and add 7.80 mL of distilled water. Finally, add a drop of the indicator to the...
Intraveneous medications are aqueous solutions that are administered directly into a vein. Some medications are manufactured...
Intraveneous medications are aqueous solutions that are administered directly into a vein. Some medications are manufactured at a higher concentration than prescribed. For these medications, a portion of the more concentrated stock solution is mixed with a sterile solution that does not contain the drug before being administered to a patient. If a doctor orders an injection of a 1.99% (m/v) solution of a medication, how many milliliters of the diluted solution can be prepared from 54.0 mL of a...
Table 2. Reaction for proteins test tube Solution 2ml egg white Biuret Reaction Final color and...
Table 2. Reaction for proteins test tube Solution 2ml egg white Biuret Reaction Final color and conclusions Solution separated at the top Light green; homogenous 2ml high fructose corn 2ml 1% amino acid solution 2ml distilled water Light blue Light blue 2ml 1% protein solution Purple 2ml 1 starch Light blue 2ml 1% glucose solution Light blue 2ml Muscle Milk Light purple 2ml 1% protein shake Half purple, separated 2ml 1% BCAA shake Which one of the solutions is the...
how is the solvent system in D different from A? D. Time for 10% Solvolysis of...
how
is the solvent system in D different from A?
D. Time for 10% Solvolysis of 2-chloro-2-methylpropane in a Different Solvent System per 2.00 mL of the 0.1 M 2-chloro-2-methylpropane solution into a 50-ml Erlenmeyer flask. Place the flask on a sheet of white paper. This will aid you in observing color changes. Into another 50-ml Erlenmeyer, pipet 0.20 mL of the NaOH solution and add 7.80 mL of distilled water. Finally, add a drop of the indicator to the...
Hello can you answer the incorrect question ? X Incorrect 1) What group does the Benedict's...
Hello can you answer the incorrect question ?
X Incorrect 1) What group does the Benedict's test oxidize? A. A ketone B. More than one of these C. An ether D. An aldehyde X (Your Answer) X Incorrect 3) If you have a polysaccharide, what color is it when mixed with lodina? A. Deep brown X (Your Answer) B. Deep violet C. Light Brown D. Prussian red X Incorrect 4) What sugar was negative to the Benedict's test? A. Fructose...
Question 1 Suppose two liquids (A and B) are mixed together and a phase diagram constructed...
Question 1 Suppose two liquids (A and B) are mixed together and a phase diagram constructed for this real solution (shown in green in the graph on the next page). Vapour pressure lines are also drawn in blue for the ideal version of this solution. a) Calculate the mole fraction of B in a solution where 4.6 moles of A is mixed with 3.6 moles of В. b) What has the higher vapour pressu re, the real solution or the...
some of the reagents used in this lab are easily confused: such as persulfate and thiosulfate....
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
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...
-Give a brief background on the role of pigments in
photosythensis.
-state your hypothesis.
-finish with stating the rationale for your hypothesis (how
did you arrive at these hypothesis?)
this is an introduction piece, so it doesn't need the results to
write the papee. introduction sections set up the background,
purpose, rationale, and hypothesis for a study.
Biod 20 PHOTOSYNTHESIS Background Plants harness the energy of the sun through a process called photosynthesis. The leaf is the plant organ that...
How is the solvent in D more polar than A?
D. Time for 10% Solvolysis of 2-chloro-2-methylpropane in a Different Solvent System Pipet 2.00 mL of the 0.1 M 2-chloro-2-methylpropane solution into a 50-mL Erlenmeyer flask. Place the flask on a sheet of white paper. This will aid you in observing color changes. Into another 50-mL Erlenmeyer, pipet 0.20 mL of the NaOH solution and add 7.80 mL of distilled water. Finally, add a drop of the indicator to the...
Intraveneous medications are aqueous solutions that are administered directly into a vein. Some medications are manufactured at a higher concentration than prescribed. For these medications, a portion of the more concentrated stock solution is mixed with a sterile solution that does not contain the drug before being administered to a patient. If a doctor orders an injection of a 1.99% (m/v) solution of a medication, how many milliliters of the diluted solution can be prepared from 54.0 mL of a...
Table 2. Reaction for proteins test tube Solution 2ml egg white Biuret Reaction Final color and conclusions Solution separated at the top Light green; homogenous 2ml high fructose corn 2ml 1% amino acid solution 2ml distilled water Light blue Light blue 2ml 1% protein solution Purple 2ml 1 starch Light blue 2ml 1% glucose solution Light blue 2ml Muscle Milk Light purple 2ml 1% protein shake Half purple, separated 2ml 1% BCAA shake Which one of the solutions is the...
how
is the solvent system in D different from A?
D. Time for 10% Solvolysis of 2-chloro-2-methylpropane in a Different Solvent System per 2.00 mL of the 0.1 M 2-chloro-2-methylpropane solution into a 50-ml Erlenmeyer flask. Place the flask on a sheet of white paper. This will aid you in observing color changes. Into another 50-ml Erlenmeyer, pipet 0.20 mL of the NaOH solution and add 7.80 mL of distilled water. Finally, add a drop of the indicator to the...
Hello can you answer the incorrect question ?
X Incorrect 1) What group does the Benedict's test oxidize? A. A ketone B. More than one of these C. An ether D. An aldehyde X (Your Answer) X Incorrect 3) If you have a polysaccharide, what color is it when mixed with lodina? A. Deep brown X (Your Answer) B. Deep violet C. Light Brown D. Prussian red X Incorrect 4) What sugar was negative to the Benedict's test? A. Fructose...
Question 1 Suppose two liquids (A and B) are mixed together and a phase diagram constructed for this real solution (shown in green in the graph on the next page). Vapour pressure lines are also drawn in blue for the ideal version of this solution. a) Calculate the mole fraction of B in a solution where 4.6 moles of A is mixed with 3.6 moles of В. b) What has the higher vapour pressu re, the real solution or the...
some of the reagents used in this lab are easily confused: such as
persulfate and thiosulfate. A student inadvertently switched these
reagents, adding the persulfate to beaker A and thiosulfate to
beaker b. How would this affect the results? What would the student
observe with respect to the mixture in beaker A?
3. Some of the reagents used in this lab are easily confused: such as persulfate (S.O,2-) and thiosulfate (S,0,2-). A student inadvertently switched these reagents, adding the persulfate...
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