Homework Answers
Answer : Violet
Explanation : Biuret's test measure peptide bonds. Protein are consists of amino acid which content peptide bonds. In alkaline solution Copper II rects with peptide bond an form a complex, which turn blue color into violet. The Biuret reagent is made of sodium hydroxide (NaOH) and hydrated copper(II) sulfate, with potassium sodium tartrate.
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Question 36 2 pts Biuret's indicator detects the presence of proteins in food. What color indicates...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...
D Question 7 6 pts The absorption spectrum of an unknown pigment is shown below. What...
D Question 7 6 pts The absorption spectrum of an unknown pigment is shown below. What color would you expect this pigment to appear? Amount of light absorbed Violet Blue Green Yellow Orange Hint • Pigments video • Textbook chapter 8 section 8.2 blue green yellow red Violet orange
You have 2 unknown Bacteria, You need to find out what these bacteria are there biochemical...
You have 2 unknown Bacteria, You need to find out what these bacteria are there biochemical test are: Unknown #1--------------------------- There is a chart on page 3 that can help you. Test Initial Color Final Color Result Lactose Red Yellow with gas Sucrose Red Red with no gas Simmons Citrate Green Green Negative urea Peach Peach Negative SIM Yellow S = - I = + M = + Gram Stain & Shape Red Gram - & Rod Unknown #2 ---------------------------...
2. (10 pts) Using the information below and the table provided, estimate the pH of a...
2. (10 pts) Using the information below and the table provided, estimate the pH of a TM solution of sodium bisulfate (NaHSO4). • When phenolpthalein is added to 1 M NaHSO4 the resulting solution is colorless. . When thymol blue is added to 1 M NaHSO4 the resulting solution is yellow. • When methyl violet is added to 1 M NaHSO4 the resulting solution is violet. Indicator Solution Methyl Violet Thymol Blue pH range in which the color changes 0.5...
It doesn't mention what color was chosen. Scenario 9: Gloria wanted to find out if the color of food would affect w...
It doesn't mention what color was chosen.
Scenario 9: Gloria wanted to find out if the color of food would affect whether kindergarten children would select it for lunch. She put food coloring into 5 identical bowls of mashed potatoes. The colors were plain, red, green, yellow, and blue. Each child chose a scoop of potatoes of the color of their choice. Gloria d this experiment using 100 students. She recorded the number of students that chose each color. Write...
Question 10 12 pts A) What is the name of the compound having the formula Naz[Fe(NH3)2Br2CICN)...
Question 10 12 pts A) What is the name of the compound having the formula Naz[Fe(NH3)2Br2CICN) (m.m. of Fe = 26) B) What is the coordination number? C) What is the d electron configuration? D) Number of unpaired electrons. E) Is it paramagnetic or diamagnetic? F) What is the color of the solution? 750 400 Red Violet 630 430 Blue Orange 590 480 Yellow Green 560
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1...
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1 - 3 and pK2 - 7. If Heln is yellow, Hin'is red, and In2-is blue what species is/are significantly present at pH of 7? what is the color of the indicator at a pH of 7? (Select Question 10 1 pts Indicators are commonly used during titrations to monitor the point at which an acid has fully been converted to its conjugate base for...
Question 5 20 pts Design a lighting system for a business sign that switches color after...
Question 5 20 pts Design a lighting system for a business sign that switches color after a certain period of time from green to red to violet to blue and continues repeating in that order. You must show State Graph, Next State Table, then using a T flip flop fill in the proper Kmap, lastly show your circuit design all the including connection from the beginning all the way to the output to the lights
Question 5 20 pts Design...
1. You are a food scientist trying to determine the nutritional content of certain food samples....
1. You are a food scientist trying to determine the nutritional content of certain food samples. Foor food sample D you preform a Benedict test to see if it contains any monosaccharides. For this test, you take 3 droplets of food sample D and mix it with 2 droplets of the Benedict test solution. The solution is heated for 5 minutes and you observe the color of the solution changing from blue to green to orange. A color change from...
IT: Canves LMS O Ouiz: EC-Preparation 10284/take D? Question 2 1 pts Based off the ax...
IT: Canves LMS O Ouiz: EC-Preparation 10284/take D? Question 2 1 pts Based off the ax of FeSCN2*, what color do you expect the FeSCN2 solution to be? 647 nm 585 nm Orange 700m Red 400 nm Yellow 575 nm Purple/Green Blue 24 nm491 m O Orange ?Green ?Purple Yellow ?Red Blue 2 pts D Question 3 MacBook Air
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...
D Question 7 6 pts The absorption spectrum of an unknown pigment is shown below. What color would you expect this pigment to appear? Amount of light absorbed Violet Blue Green Yellow Orange Hint • Pigments video • Textbook chapter 8 section 8.2 blue green yellow red Violet orange
2. (10 pts) Using the information below and the table provided, estimate the pH of a TM solution of sodium bisulfate (NaHSO4). • When phenolpthalein is added to 1 M NaHSO4 the resulting solution is colorless. . When thymol blue is added to 1 M NaHSO4 the resulting solution is yellow. • When methyl violet is added to 1 M NaHSO4 the resulting solution is violet. Indicator Solution Methyl Violet Thymol Blue pH range in which the color changes 0.5...
It doesn't mention what color was chosen.
Scenario 9: Gloria wanted to find out if the color of food would affect whether kindergarten children would select it for lunch. She put food coloring into 5 identical bowls of mashed potatoes. The colors were plain, red, green, yellow, and blue. Each child chose a scoop of potatoes of the color of their choice. Gloria d this experiment using 100 students. She recorded the number of students that chose each color. Write...
Question 10 12 pts A) What is the name of the compound having the formula Naz[Fe(NH3)2Br2CICN) (m.m. of Fe = 26) B) What is the coordination number? C) What is the d electron configuration? D) Number of unpaired electrons. E) Is it paramagnetic or diamagnetic? F) What is the color of the solution? 750 400 Red Violet 630 430 Blue Orange 590 480 Yellow Green 560
Question 9 1 pts Suppose you have an indicator that is diprotic and has pK 1 - 3 and pK2 - 7. If Heln is yellow, Hin'is red, and In2-is blue what species is/are significantly present at pH of 7? what is the color of the indicator at a pH of 7? (Select Question 10 1 pts Indicators are commonly used during titrations to monitor the point at which an acid has fully been converted to its conjugate base for...
Question 5 20 pts Design a lighting system for a business sign that switches color after a certain period of time from green to red to violet to blue and continues repeating in that order. You must show State Graph, Next State Table, then using a T flip flop fill in the proper Kmap, lastly show your circuit design all the including connection from the beginning all the way to the output to the lights
Question 5 20 pts Design...
IT: Canves LMS O Ouiz: EC-Preparation 10284/take D? Question 2 1 pts Based off the ax of FeSCN2*, what color do you expect the FeSCN2 solution to be? 647 nm 585 nm Orange 700m Red 400 nm Yellow 575 nm Purple/Green Blue 24 nm491 m O Orange ?Green ?Purple Yellow ?Red Blue 2 pts D Question 3 MacBook Air
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