Homework Answers
The mass of Chemical Species would remain the same. This is because KOCl is an oxidizing agent. It decomposes into KCl and oxygen, thus resulting in the oxidation of compounds.
If KCl would have benn added instead of KOCl, there will not be any oxygen gas liberated, hence no oxidation will take place. Instead KCl itself will melt.
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QUESTIONS AND PROBLEMS 1. A student forgot to read the label on the jar carefully and...
composition of potassium chlorate questions and problems REPORT FOR EXPERIMENT 9 (continued) B. Qualitative Examination of...
composition of potassium chlorate questions and problems
REPORT FOR EXPERIMENT 9 (continued) B. Qualitative Examination of Residue 1. Record what you observed when silver nitrate was added to the following: (a) Potassium chloride solution (b) Potassium chlorate solution (c) Residue solution 2. (a) What evidence did you observe that would lead you to believe that the residue was potassium chloride? (b) What would happen if you added silver nitrate to a solution of sodium chloride? Explain your answer. e) Did...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible + lid (b) Mass of crucible, lid + 103.76 g KCIO3 (c) Mass of crucible, lid + 102.01g residue after 1st heating (d) Mass of crucible, lid + residue after 101.69 g 2nd heating (e) Mass of crucible, lid + 101.68 g residue after 3rd heating 101.05 g 101.01 g Data Analysis .Use your data to determine the experimental mass percent of oxygen in...
Question 1 (1 point) One student forgot to use the tongs to pick up the metal...
Question 1 (1 point) One student forgot to use the tongs to pick up the metal from the hot water bath and immediately feels pain in his index finger and thumb. He drops the piece of metal, breaking the beaker that it was in. What should he do and what should his partner do? OA) He should immediately put his hand under cool water and his partner should turn off the hotplate. His partner should warn classmates of the broken...
QUESTIONS 1. If the barium sulfate precipitate and overheated, is it possible that Bao experimental results?...
QUESTIONS 1. If the barium sulfate precipitate and overheated, is it possible that Bao experimental results? ale and the filter paper in the crucible is accidentally we that Bao might be formed. How would this affect the 1 1.5 g of barium chloride was used instead of 1.3 g? 2. Would the results be the same if 1.5 g of barium chloride w Same with 0.7 g of barium chloride?
solution of potassium chloride. The concentration of a solution equals the mass A chemistry student must...
solution of potassium chloride. The concentration of a solution equals the mass A chemistry student must write down in her lab notebook the concentration of of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 3.250 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 29.91 g. ....
A chemistry student must write down in her lab notebook the concentration of a solution of...
A chemistry student must write down in her lab notebook the concentration of a solution of potassium chloride. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 3.250 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 29.91 %...
DIRECTIONS: The following questions are based on topics covered in class. Read the problems carefully and...
DIRECTIONS: The following questions are based on topics covered in class. Read the problems carefully and follow directions. Make sure everything is CLEARLY LABELED. Synthetic analysis. Predict the products, showing proper stereochemistry where appropriate, of the following reactions of 1-hexyne. (a) 1 equiv HBr, CCI4 (b) 1 equiv. Cl2, CC14 (c) 2 Lindlar catalyst CH3(CH2)3CECH (d) 1. NaNH2, NH3 2. CH3Br, THF (e) H20, H2S04 HgSO4
Percentage of Oxygen in Potassium Chlorate Introduction: The thermal decomposition of potassium chlorate can be described...
Percentage of Oxygen in Potassium Chlorate Introduction: The thermal decomposition of potassium chlorate can be described by the following equation: 2 KCIO3(s) 2 KCls) + 3 O2(g) Egn 1 (D stands for heating, elevated temperature) In this experiment you will determine the percentage of oxygen in potassium chlorate. You will compare the experimental result with the theoretical percentage calculated from the formula KCIO3. While potassium chlorate decomposes simply by heating, the reaction is very slow. A catalyst is used. Catalyst...
yes please all i need help with all questions pls step by step w licble/lid wt...
yes
please all
i
need help with all questions pls step by step
w licble/lid wt Crucibe / lid 3424 7 unksample 39,679 wt crucible / lid unksam alt heating - ut sample 5.43 ut pt by sample Wt of Oxygen in Sample 3.60g exp the t 2160g x 100 47.9 of oxygen 5.43 1. Predict and balance the following reactions (assume they all go) solid sodium metal plus nitrogen b. chromium(III) chlorate plus beat c. ferric carbonate plus beat...
Questions 1. Determine the empirical formula of the oxide of magnesium. (Think carefully about the precision...
Questions 1. Determine the empirical formula of the oxide of magnesium. (Think carefully about the precision of each mass that you measured before you do this caleulation. How many significant figures are justified fo each mass?) all Anc $8 FESEIOS IN.S itoesM bi boe ofd )bi ban sld wus to a.cm.oer e.ce Results 33 306 Mass of empty crucible and lid (g) 33.5329 33.b4I 33.Y12 Average mass of empty crucible and lid (g) 33.513 Mass of crucible, lid, and Mg...
composition of potassium chlorate questions and problems
REPORT FOR EXPERIMENT 9 (continued) B. Qualitative Examination of Residue 1. Record what you observed when silver nitrate was added to the following: (a) Potassium chloride solution (b) Potassium chlorate solution (c) Residue solution 2. (a) What evidence did you observe that would lead you to believe that the residue was potassium chloride? (b) What would happen if you added silver nitrate to a solution of sodium chloride? Explain your answer. e) Did...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible + lid (b) Mass of crucible, lid + 103.76 g KCIO3 (c) Mass of crucible, lid + 102.01g residue after 1st heating (d) Mass of crucible, lid + residue after 101.69 g 2nd heating (e) Mass of crucible, lid + 101.68 g residue after 3rd heating 101.05 g 101.01 g Data Analysis .Use your data to determine the experimental mass percent of oxygen in...
Question 1 (1 point) One student forgot to use the tongs to pick up the metal from the hot water bath and immediately feels pain in his index finger and thumb. He drops the piece of metal, breaking the beaker that it was in. What should he do and what should his partner do? OA) He should immediately put his hand under cool water and his partner should turn off the hotplate. His partner should warn classmates of the broken...
QUESTIONS 1. If the barium sulfate precipitate and overheated, is it possible that Bao experimental results? ale and the filter paper in the crucible is accidentally we that Bao might be formed. How would this affect the 1 1.5 g of barium chloride was used instead of 1.3 g? 2. Would the results be the same if 1.5 g of barium chloride w Same with 0.7 g of barium chloride?
solution of potassium chloride. The concentration of a solution equals the mass A chemistry student must write down in her lab notebook the concentration of of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 3.250 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 29.91 g. ....
A chemistry student must write down in her lab notebook the concentration of a solution of potassium chloride. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: • The label on the graduated cylinder says: empty weight: 3.250 g • She put some solid potassium chloride into the graduated cylinder and weighed it. With the potassium chloride added, the cylinder weighed 29.91 %...
DIRECTIONS: The following questions are based on topics covered in class. Read the problems carefully and follow directions. Make sure everything is CLEARLY LABELED. Synthetic analysis. Predict the products, showing proper stereochemistry where appropriate, of the following reactions of 1-hexyne. (a) 1 equiv HBr, CCI4 (b) 1 equiv. Cl2, CC14 (c) 2 Lindlar catalyst CH3(CH2)3CECH (d) 1. NaNH2, NH3 2. CH3Br, THF (e) H20, H2S04 HgSO4
Percentage of Oxygen in Potassium Chlorate Introduction: The thermal decomposition of potassium chlorate can be described by the following equation: 2 KCIO3(s) 2 KCls) + 3 O2(g) Egn 1 (D stands for heating, elevated temperature) In this experiment you will determine the percentage of oxygen in potassium chlorate. You will compare the experimental result with the theoretical percentage calculated from the formula KCIO3. While potassium chlorate decomposes simply by heating, the reaction is very slow. A catalyst is used. Catalyst...
yes
please all
i
need help with all questions pls step by step
w licble/lid wt Crucibe / lid 3424 7 unksample 39,679 wt crucible / lid unksam alt heating - ut sample 5.43 ut pt by sample Wt of Oxygen in Sample 3.60g exp the t 2160g x 100 47.9 of oxygen 5.43 1. Predict and balance the following reactions (assume they all go) solid sodium metal plus nitrogen b. chromium(III) chlorate plus beat c. ferric carbonate plus beat...
Questions 1. Determine the empirical formula of the oxide of magnesium. (Think carefully about the precision of each mass that you measured before you do this caleulation. How many significant figures are justified fo each mass?) all Anc $8 FESEIOS IN.S itoesM bi boe ofd )bi ban sld wus to a.cm.oer e.ce Results 33 306 Mass of empty crucible and lid (g) 33.5329 33.b4I 33.Y12 Average mass of empty crucible and lid (g) 33.513 Mass of crucible, lid, and Mg...
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