Why is emphasis placed on the use of distilled water in the procedure? It is to...
Why is emphasis placed on the use of distilled water in the procedure? It is to wash away any chemicals, or it is used just to prevent side reactions when trying to find the identify of an unknown anion?
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Why is emphasis placed on the use of distilled water in
the procedure? It is to...
Describe examples of situations where you could appropriately use the following. Explain why the procedure is...
Describe examples of situations where you could appropriately use the following. Explain why the procedure is the correct one to use and identify the statistic to be used and explain why that is the correct choice. (I'M EXTREMELY STUCK AND NEED SOME HELP PLEASE) Confidence interval for a proportion. Confidence interval for a mean, unknown σ. Describe procedure for following and provide an example of the calculations: Sample size determination for 95% confidence level.
procedure and test result QUESTIONS 1. The first line in the procedure states that all of...
procedure and test result
QUESTIONS 1. The first line in the procedure states that all of the cations have either nitrate or chloride as the counter lon. Explain why all of the cations have either nitrate ion or chloride ion as the counter ion. Why are other anions not used? 2. The second line in the procedure states that all of the anions have either sodium or potassium ion as the counter ion. Explain why all the anions have sodium...
Describe examples of situations where you could appropriately use the following. Explain why the procedure is...
Describe examples of situations where you could appropriately use the following. Explain why the procedure is the correct one to use and identify the statistic to be used and explain why that is the correct choice. (1 point each) a. Confidence interval for a proportion. b. Confidence interval for a mean, unknown σ. c. Confidence interval for a mean, σ known. Describe procedure for following and provide an example of the calculations: a. Margin of error calculation for 95% confidence...
1. Describe the changes in your potato sample when placed in distilled water. Based on these...
1. Describe the changes in your potato sample when placed in distilled water. Based on these changes, was the water hypertonic, isotonic, or hypotonic compared to the cells of the potato? Explain your reasoning in terms of the flow of water into or out of the potato cells. 2, Describe the changes in your potato sample when placed in 0.9% NaCl solution. Based on these changes, was the 0.9% NaCl hypertonic, isotonic, or hypotonic compared to the cells of the...
R LON-CAPA course contents IRLON-CAPACation Test Proc LON-CAPA cation Test EX EY Did Kate Middleton really...
R LON-CAPA course contents IRLON-CAPACation Test Proc LON-CAPA cation Test EX EY Did Kate Middleton really ru O loncapa nau.edu exp5intro.p problem 0 Humoud Alanjari Student section: K1) CHM 151 Lab Spring 2017 Messages courses Help Logout Main Menu Course Contents st & 5 Pre lab Cation Test procedure Due on Friday, M 3 at 07:30 am (MST Cation Test Procedure In experiment five, the "Identification of lons in Salts, you will use a series of reactions to identify a...
so for my general unknown lab im testing for possible anion present I followed procedure 33...
so for my general unknown lab im testing for possible anion
present
I followed procedure 33 and adding the H2SO4 it had a brown
bubbly reaction and heating it up produced a brown gas.
i need help at determining the possible anion present.
TREATMENT OF THE UNKNOWN WITH CLASS REAGENTS PROCEDURE 33 Treatment of the Solid with H2SO4 The reagents H2SO4 (cold and hot), AgNO3, and BaCl2 give characteristic reactions that pro. vide useful information about the identity of the...
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the...
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the experience you gained from doing the experiment to answer the following: A student tested an unknown mixture that might contain any of the ions tested in this ex- periment and made the following observations: a. On the addition of 6M HCI, the solution remained colorless and no bubbles were observed. b. When 0.1M BaCl2 was added to the acidified unknown, a white precipitate was...
1. Most will agree that a block of steel will sink when placed in water. What...
1. Most will agree that a block of steel will sink when placed in water. What can you do to make it float? (Use concepts of buoyancy) 2. What would change if we used cooking oil instead a water? How would the buoyant force change? 3. Do we experience a buoyant force exerted by the atmosphere (air around us)? Why or why not?
For each of the following scenarios, identify the correct procedure to use to arrive at the...
For each of the following scenarios, identify the correct procedure to use to arrive at the desired answer. DO NOT actually work the problem, simply determine which procedure would be used. You may provide the description, such as "Two independent samples test for difference in proportions." or the calculator function such as "2-PropZTest." 1. The admissions officer at a small college compares the scores on the Scholastic Aptitude Test (SAT) for the school's male and female applicants. A random sample...
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure...
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure to include special technique equipment, chemicals, and chemical reactions to be performed, an understanding of any calculations that are important to understanding the procedure. 2. Calculate the molar mass of copper (II) Sulfate pentahydrate, Cuso,5H.O. 3. Calculate the mass percent of water present in Copper(II) sulfate pentahydrate. 4. Define the term hydrate and anhydrous. S. A 2.000 gram sample of hydrated barium carbonate was...
procedure and test result
QUESTIONS 1. The first line in the procedure states that all of the cations have either nitrate or chloride as the counter lon. Explain why all of the cations have either nitrate ion or chloride ion as the counter ion. Why are other anions not used? 2. The second line in the procedure states that all of the anions have either sodium or potassium ion as the counter ion. Explain why all the anions have sodium...
1. Describe the changes in your potato sample when placed in distilled water. Based on these changes, was the water hypertonic, isotonic, or hypotonic compared to the cells of the potato? Explain your reasoning in terms of the flow of water into or out of the potato cells. 2, Describe the changes in your potato sample when placed in 0.9% NaCl solution. Based on these changes, was the 0.9% NaCl hypertonic, isotonic, or hypotonic compared to the cells of the...
R LON-CAPA course contents IRLON-CAPACation Test Proc LON-CAPA cation Test EX EY Did Kate Middleton really ru O loncapa nau.edu exp5intro.p problem 0 Humoud Alanjari Student section: K1) CHM 151 Lab Spring 2017 Messages courses Help Logout Main Menu Course Contents st & 5 Pre lab Cation Test procedure Due on Friday, M 3 at 07:30 am (MST Cation Test Procedure In experiment five, the "Identification of lons in Salts, you will use a series of reactions to identify a...
so for my general unknown lab im testing for possible anion
present
I followed procedure 33 and adding the H2SO4 it had a brown
bubbly reaction and heating it up produced a brown gas.
i need help at determining the possible anion present.
TREATMENT OF THE UNKNOWN WITH CLASS REAGENTS PROCEDURE 33 Treatment of the Solid with H2SO4 The reagents H2SO4 (cold and hot), AgNO3, and BaCl2 give characteristic reactions that pro. vide useful information about the identity of the...
QUESTIONS Answer the following questions in the data section of your lab report: 1. Use the experience you gained from doing the experiment to answer the following: A student tested an unknown mixture that might contain any of the ions tested in this ex- periment and made the following observations: a. On the addition of 6M HCI, the solution remained colorless and no bubbles were observed. b. When 0.1M BaCl2 was added to the acidified unknown, a white precipitate was...
Experiment 6 PRE-LABORATORY PROBLEMS NAME 1. Write a purpose statement and a summary of the procedure to include special technique equipment, chemicals, and chemical reactions to be performed, an understanding of any calculations that are important to understanding the procedure. 2. Calculate the molar mass of copper (II) Sulfate pentahydrate, Cuso,5H.O. 3. Calculate the mass percent of water present in Copper(II) sulfate pentahydrate. 4. Define the term hydrate and anhydrous. S. A 2.000 gram sample of hydrated barium carbonate was...
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