Homework Answers
Because it remove the impurities from the solution and get pure formation of product
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3. Why do you need to keep adding precipitating reagent until your sample solution no longer...
lordardization au to Of a solchon by Frering it against another solution. You need to know...
lordardization au to Of a solchon by Frering it against another solution. You need to know are evo Coreerlohon Of Something 2) is the quantity 50 mL important? What would happen if you used 250 mL? How will you accurately measure out 50 mL? 3) Why are you putting iodine solution in the buret, and titrating the vitamin C sample, instead of putting the vitamin C sample in the buret, and titrating a sample of lodine? What do you think...
Why do you test a solution of CaCl2 along with your unknown when testing for the...
Why do you test a solution of CaCl2 along with your unknown when testing for the Ca2+ ion? A) It shows a visual outcome of negative results. B) It shows a visual outcome of a sample that does not have Ca2+ ions. C) It shows a visual outcome of positive results. D) It shows a visual outcome of a sample that has been contaminated
Why do we want/need the presence of Mg2+ in a PCR but do not want it...
Why do we want/need the presence of Mg2+ in a PCR but do not want it present at all other steps of processing/analyzing a DNA sample? (2 marks) Identify and explain what generally occurs in each of the 3 main steps of a polymerase chain reaction. (6 marks) 8. Identify and explain what the 3 different PCR controls inform you about the results of a PCR. (3 marks) Highlight the 2 advantages and 3 disadvantages of using PCR. Ensure to...
Need help please SOLUTION MAKING in water. Calculate the amount of NaCl you need to weigh...
Need help please
SOLUTION MAKING in water. Calculate the amount of NaCl you need to weigh out. 1 (a). You need 500mL of 15% (w/v) NaCl 1(b) What approximate volume of water would you dissolve the NaCl in? Please give a range of volumes. 1(c). Assuming that adding the NaCI to your original volume of water caused the volume to increase by 50mL before you added additional water to reach your final volume, what is the DENSITY of your final...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total volume of 0.250 L: - 5.00 mmol of sodium phenoxide (NaPh) *Phenol, HPh: pKa = 9.997 -1.00 mmol of acetic acid (HAC) *Acetic acid, HAC: pKa = 4.756 - 3.50 mmol ammonium chloride (NH4CI) *Ammonium, NH4+: pKa = 9.245 - 10.0 mmol NaCl a) Write balanced equations for each of the chemical reactions for all the equilibria present in this solution. b) Excluding solvent,...
DULLOH HILL UCUREI LULUS solution in the beaker. 13. When you have finished the testing, dispose of the reaction mi...
DULLOH HILL UCUREI LULUS solution in the beaker. 13. When you have finished the testing, dispose of the reaction mixture as directed. Rinse the Sensor with distilled water in preparation for a second trial. Repeat the necessary steps to CS a new sample of the acetic acid solution. DATA TABLE Titration Results Trial 1 Equivalence point pH Trial 2 9.69.16.24 15.675.53 pH of half-titrated solution DATA ANALYSIS 1. Calculate the pKa and K, using the results of your testing. 2....
1. If your original unknown is colorless, what ions are absent from your unknown? 2. If...
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification letter. Gently dry the inside of the calorimeter and weigh it. If the calorimeter is not dry, you will not be able to accurately find the mass of water in your calorimeter. Add about 50 mL of distilled water and weigh again. Measure the water's initial temperature. Use a plastic weighing "boat" set to zero on the balance and use it to...
CS - Computer Organization. Topic: Pipelining. (If you do write your solutions by hand, please write...
CS - Computer Organization.
Topic: Pipelining. (If you do write your
solutions by hand, please write clearly) Thank you
so much.
Please pay close attention to the instructions, this is an
important task, that will help me to learn the subject and finally
pass the class, I will greatly appreciate the help in this regard.
My question is the following:
Problenm Consider the following instructions. Complete the pipeline diagram, indicating the cycle in which each instructions stages are executed. Assume...
Preparation of Benzoic Acid using a Grignard Reagent URGENT 1. During your Grignard formation, a small...
Preparation of Benzoic Acid using a Grignard Reagent URGENT 1. During your Grignard formation, a small amount of benzene is formed. Provide a brief explanation and mechanism to explain this observation. 2. During your Grignard formation, a small amount of biphenyl is formed. Provide a brief explanation and mechanism to explain this observation. 3. What mass of water would be required to destroy the phenylmagnesium bromide that you prepared in this experiment? What volume does this represent? 4. Why is...
lordardization au to Of a solchon by Frering it against another solution. You need to know are evo Coreerlohon Of Something 2) is the quantity 50 mL important? What would happen if you used 250 mL? How will you accurately measure out 50 mL? 3) Why are you putting iodine solution in the buret, and titrating the vitamin C sample, instead of putting the vitamin C sample in the buret, and titrating a sample of lodine? What do you think...
Need help please
SOLUTION MAKING in water. Calculate the amount of NaCl you need to weigh out. 1 (a). You need 500mL of 15% (w/v) NaCl 1(b) What approximate volume of water would you dissolve the NaCl in? Please give a range of volumes. 1(c). Assuming that adding the NaCI to your original volume of water caused the volume to increase by 50mL before you added additional water to reach your final volume, what is the DENSITY of your final...
Consider an aqueous solution, prepared by adding the following four components, and diluting to a total volume of 0.250 L: - 5.00 mmol of sodium phenoxide (NaPh) *Phenol, HPh: pKa = 9.997 -1.00 mmol of acetic acid (HAC) *Acetic acid, HAC: pKa = 4.756 - 3.50 mmol ammonium chloride (NH4CI) *Ammonium, NH4+: pKa = 9.245 - 10.0 mmol NaCl a) Write balanced equations for each of the chemical reactions for all the equilibria present in this solution. b) Excluding solvent,...
DULLOH HILL UCUREI LULUS solution in the beaker. 13. When you have finished the testing, dispose of the reaction mixture as directed. Rinse the Sensor with distilled water in preparation for a second trial. Repeat the necessary steps to CS a new sample of the acetic acid solution. DATA TABLE Titration Results Trial 1 Equivalence point pH Trial 2 9.69.16.24 15.675.53 pH of half-titrated solution DATA ANALYSIS 1. Calculate the pKa and K, using the results of your testing. 2....
1. If your original unknown is colorless, what ions are absent
from your unknown?
2. If you get no precipitate with just the 6 M NH3 in step B,
what ions are absent from your unknown?
pls help are my answers correct ty
17 Page 4 Aperiment 24. Qualitative Analysis Group III-NI, Mn, Fe, Al, Cr, Zn 1. PROCEDURES A. Observations of Samples. Obtain an unknown and record code. Observe color of unknown solution Common color correlations are: dark blue...
PART B. HEAT OF SOLUTION REACTION Obtain a sample bottle with an unknown ionic salt. Record its identification letter. Gently dry the inside of the calorimeter and weigh it. If the calorimeter is not dry, you will not be able to accurately find the mass of water in your calorimeter. Add about 50 mL of distilled water and weigh again. Measure the water's initial temperature. Use a plastic weighing "boat" set to zero on the balance and use it to...
CS - Computer Organization.
Topic: Pipelining. (If you do write your
solutions by hand, please write clearly) Thank you
so much.
Please pay close attention to the instructions, this is an
important task, that will help me to learn the subject and finally
pass the class, I will greatly appreciate the help in this regard.
My question is the following:
Problenm Consider the following instructions. Complete the pipeline diagram, indicating the cycle in which each instructions stages are executed. Assume...
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