Homework Answers
Solution:
Vigorous shaking of phycocynin solution causes reaction of dissolved oxygen with the blue pigment of phycocynin. It oxidized the pigment which causes the fadding of blue color into colorless.
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A student capped a test tube containing 10 drops of phycocyanin solution and shook it vigorously...
Questions: To determine the pH of an unknown solution, a student uses adds 10 drops of...
Questions: To determine the pH of an unknown solution, a student uses adds 10 drops of red cabbage indicator to the solution, but the solution remains colorless. Can the student determine if the solution is acidic, basic, or neutral? Explain. 1.
Question 5 6 pts A student has three test tubes containing a metal (M) nitrate solution...
Question 5 6 pts A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow...
6. Suppose your TA gives you a test tube containing a phosphate solution of unknown concentration...
6. Suppose your TA gives you a test tube containing a phosphate solution of unknown concentration and asks you to analyze it. Your TA is kind enough to give you a hint: the unknown solution has a phosphate concentration between 4.00 x 105 M and 8.00 x 103M. How would your sample preparation procedure for analyzing this unknown solution differ from the sample preparation procedure for the soda pop?
6. Suppose your TA gives you a test tube containing a...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone Cyclohexanone Unknown Part D. Iodoform Test. Test Sample Tube 1 2-hydroxybutanal Prediction Observations Results (+ or -) Benzaldehyde Propanone Cyclohexanone Unknown Experiment 12 Identification of Aldehydes and Ketones O the b e t theader of each holding your breath as a st beward your nose. Record the derson the specified memes from O Ta Test g shes between ones that contain a methyl group...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know?...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know? b In which tube(s) did no protein digestion occur? How do you know? c What effect does pH have on protein digestion with pepsin? Why? d What other effects does acid have in the stomach? Procedure 3 Demonstrate Lipid Emulsification Let's examine what happens during the process of emulsification. In this exercise you will use four substances to observe emulsification in action: 1 Lipids:...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of calcium carbonate. Carefully and slowly add about 3 mL of 6 M HCl solution. Remember that carbonic acid is NOT a gas, but an aqueous acid that decomposes into carbon dioxide and water. Allow the reaction to proceed for 60 seconds, the insert a lit splint into the test tube. What did you observe? From your observation, determine what gas is evolved. TABLE 9.17...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of calcium carbonate. Carefully and slowly add about 3 mL of 6 M HCl solution. Remember that carbonic acid is NOT a gas, but an aqueous acid that decomposes into carbon dioxide and water. Allow the reaction to proceed for 60 seconds, the insert a lit splint into the test tube. What did you observe? From your observation, determine what gas is evolved. TABLE 9.17...
1 Reaction C: Copper(II) Hydroxide to Copper(IT) Oxide Observations: The solntich goes from a light blue...
1 Reaction C: Copper(II) Hydroxide to Copper(IT) Oxide Observations: The solntich goes from a light blue to a dark blue. when heated the solution turns to a green/black color. Balanced Molecular Equation: Balanced Net lonie Equation: Reaction D: Copper(IT) Oxide to Copper(II) Sulfate Observations: "The back sond is dissolved in the acid. This creates a light blue / Clear solurich Balanced Molecular Equation: Balanced Net Ionic Equation: Reaction E: Copper(II) Sulfate to Copper Metal (and Dissolution of excess Mg) Observations:...
please help with #5 (sn2) and #6 (sn1) 52 Reaction Rates 1. Pace drops of the...
please help with #5 (sn2) and #6 (sn1)
52 Reaction Rates 1. Pace drops of the compounds in the 9.1 in separate labeled test tubes Table 9.11 FE for Relative Reaction Rates is Sy Reactions Halide Halide S hare -Chord CECH.CH.CH.CH 1-Broomoburane Нr CHCHCHCH typ=77-78°C b.100-101 C oboti CH CH CH.CH 2-Chloro-2-methylbute CH C CH CH, tip-85.86 C 2-r by CI-CH:CHCH, 1-Chloro2- methylpropane Lp68-69°C 2-Bromo-2-methylbutane pr1073H CHỤC CHÍCH, CH CICH.C-CH, H-Chloro-2.2- dimethylpropane -84-85' Browobenzene bp-156 Benzyl Bromide bo198199 2. Recording...
For part 1 of this lab) I collected a soil sample from my campus Part 2)...
For part 1 of this lab) I collected a soil sample from my campus
Part 2) Tested bacteria initial viability Part 3) DNA extraction
Part 4) DNA quantification by Nanodrop Part 5) Sample sequencing
Part 6) PCR amplification Part 7) Gel electrophoresis Part 8) DNA
sequence data analysis (sent sample to another lab)
Directions for Part 3 DNA extraction are in the attached
image
QUESTIONS REGARDING PART 3 (DNA extraction)
1) What type of conclusions can be made from initially...
Questions: To determine the pH of an unknown solution, a student uses adds 10 drops of red cabbage indicator to the solution, but the solution remains colorless. Can the student determine if the solution is acidic, basic, or neutral? Explain. 1.
Question 5 6 pts A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow...
6. Suppose your TA gives you a test tube containing a phosphate solution of unknown concentration and asks you to analyze it. Your TA is kind enough to give you a hint: the unknown solution has a phosphate concentration between 4.00 x 105 M and 8.00 x 103M. How would your sample preparation procedure for analyzing this unknown solution differ from the sample preparation procedure for the soda pop?
6. Suppose your TA gives you a test tube containing a...
Part C. Benedict's Test. Test Tube Samp Prediction Observations Results (+ or -) 2-hydroxybutanal Benzaldehyde Propanone Cyclohexanone Unknown Part D. Iodoform Test. Test Sample Tube 1 2-hydroxybutanal Prediction Observations Results (+ or -) Benzaldehyde Propanone Cyclohexanone Unknown Experiment 12 Identification of Aldehydes and Ketones O the b e t theader of each holding your breath as a st beward your nose. Record the derson the specified memes from O Ta Test g shes between ones that contain a methyl group...
9 Interpret your results: a In which tube(s) did protein digestion occur? How do you know? b In which tube(s) did no protein digestion occur? How do you know? c What effect does pH have on protein digestion with pepsin? Why? d What other effects does acid have in the stomach? Procedure 3 Demonstrate Lipid Emulsification Let's examine what happens during the process of emulsification. In this exercise you will use four substances to observe emulsification in action: 1 Lipids:...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of calcium carbonate. Carefully and slowly add about 3 mL of 6 M HCl solution. Remember that carbonic acid is NOT a gas, but an aqueous acid that decomposes into carbon dioxide and water. Allow the reaction to proceed for 60 seconds, the insert a lit splint into the test tube. What did you observe? From your observation, determine what gas is evolved. TABLE 9.17...
Dala Shoot! Chemical Reactions 2. in a clean, dry test tube, place a small amount of calcium carbonate. Carefully and slowly add about 3 mL of 6 M HCl solution. Remember that carbonic acid is NOT a gas, but an aqueous acid that decomposes into carbon dioxide and water. Allow the reaction to proceed for 60 seconds, the insert a lit splint into the test tube. What did you observe? From your observation, determine what gas is evolved. TABLE 9.17...
1 Reaction C: Copper(II) Hydroxide to Copper(IT) Oxide Observations: The solntich goes from a light blue to a dark blue. when heated the solution turns to a green/black color. Balanced Molecular Equation: Balanced Net lonie Equation: Reaction D: Copper(IT) Oxide to Copper(II) Sulfate Observations: "The back sond is dissolved in the acid. This creates a light blue / Clear solurich Balanced Molecular Equation: Balanced Net Ionic Equation: Reaction E: Copper(II) Sulfate to Copper Metal (and Dissolution of excess Mg) Observations:...
please help with #5 (sn2) and #6 (sn1)
52 Reaction Rates 1. Pace drops of the compounds in the 9.1 in separate labeled test tubes Table 9.11 FE for Relative Reaction Rates is Sy Reactions Halide Halide S hare -Chord CECH.CH.CH.CH 1-Broomoburane Нr CHCHCHCH typ=77-78°C b.100-101 C oboti CH CH CH.CH 2-Chloro-2-methylbute CH C CH CH, tip-85.86 C 2-r by CI-CH:CHCH, 1-Chloro2- methylpropane Lp68-69°C 2-Bromo-2-methylbutane pr1073H CHỤC CHÍCH, CH CICH.C-CH, H-Chloro-2.2- dimethylpropane -84-85' Browobenzene bp-156 Benzyl Bromide bo198199 2. Recording...
For part 1 of this lab) I collected a soil sample from my campus
Part 2) Tested bacteria initial viability Part 3) DNA extraction
Part 4) DNA quantification by Nanodrop Part 5) Sample sequencing
Part 6) PCR amplification Part 7) Gel electrophoresis Part 8) DNA
sequence data analysis (sent sample to another lab)
Directions for Part 3 DNA extraction are in the attached
image
QUESTIONS REGARDING PART 3 (DNA extraction)
1) What type of conclusions can be made from initially...
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