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POST-LAB QUESTIONS Show all work for full credit 1. Physical and chemical properies are not exactly...
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORKI 1. What is...
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORKI 1. What is meant when one says that a buffer has a high buffer capacity? 2. What differences did you notice when you added acid or base to distilled water as compared to the buffer solutions? 3. The blood buffer system is made up of H2CO3 and HCO3-. Describe with the use of equations how this system responds to added H3O* and to added OH-. POST LAB...
Post Lab Questions: To receive full credit, you must SHOW ALLOON 1. What is meant when...
Post Lab Questions: To receive full credit, you must SHOW ALLOON 1. What is meant when one says that a buffer has a high buffer capacity! 2. What differences did you notice when you added acid or base to distilled water as compared to the buffer solutions? 3. The blood buffer system is made up of H2CO3 and HCO3-. Describe with the use of equations how this system responds to added H3O+ and to added OH-. Looking at the fractional...
procedure, observation and result of this lab PHYSİCALAND CHEMICAL CHANGES FURPOSE: To determine whether changes in matter are physical changes or chemical changes. Sodium Chloride (NaCI) Magnesi...
procedure, observation and result of this lab
PHYSİCALAND CHEMICAL CHANGES FURPOSE: To determine whether changes in matter are physical changes or chemical changes. Sodium Chloride (NaCI) Magnesium Ribbon MATERIALS: Iodine Crystal Sucrose Sulfuric Acid PROCEDURE: 1. Salt. Dissolve a little table salt NaCI) in a test tube which is one fourth full of water. Dip a stirring rod into the solution and hold it over the Bunsen flame. What is the white substance? Has there been a physical or chemical...
Questions 1 and 2 please Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II)...
Questions 1 and 2 please
Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II) trihydrate is prepared by the following reactions: What is the percent yield of (Assume excess amounts of the other reagents.) Na, [Co(C,O) H,O if7.6 g are obtained from 12.5 g of [Co(H,O),JCl,? 2. Why are K,[Cr(C,O,)] 3HsO, K,[Cu(C,O) 3H,O, and K,[Fe(C,o) 3H,O colored, whereas [AI(C,0)J 3H2O is colorless? 3. Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired elec- trons...
PRE-LAB or POST-LAB QUIZ Name Instructor/Section PRE-LAB or POST-LAB QUIZ Multiple choice questions. Circle your answers....
PRE-LAB or POST-LAB QUIZ Name Instructor/Section PRE-LAB or POST-LAB QUIZ Multiple choice questions. Circle your answers. I. The process of carrying out an analysis where a measured volume of a chemical hav- ing an UNKNOWN concentration is reacted with a measured volume of a chemical having a KNOWN concentration is called a. the neutralization point. b. the equivalence point. c. the end point. d. a titration. 2. In volumetric analysis, the point at which the indicator changes color is called...
Show all work for full credit for problems 1-3. 1. Ibuprofen has the mass percent composition:...
Show all work for full credit for problems 1-3. 1. Ibuprofen has the mass percent composition: carbon = 75.69%; hydrogen = 8.80% and oxygen 15.51%. Calculate the empirical formula. Answer: Pls answer all Questions thanks 2. How many grams of chlorine are in 22.50g of CF3C13? Answer: 3. Silver chloride, used in silver plating, contains 75.27% silver. Calculate the mass of silver chloride in grams required to make 4.8 g of silver metal. Answer: 4. Predict the products and write...
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORK!! Use the table...
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORK!! Use the table of reduction half reactions to answer the following Post-Lab questions: Table 3. Example reduction Reduction Potential Chart half reactions. The easiest to Ce+(aq) + 3e - Ce3+ (aq) reduce is at the top. The more Au3+ (aq) + 3e Au(s) difficult to reduce is at the bottom. Cl2(g) + 2e 2CH(ag) Ag+ (aq) + e- Ag(s) Fe3+ (aq) + e- Fe2+ (aq) AgCl(s) +...
Z Х С 90 36 Command Gotion option comand 3.For 5.Og sodium bicarbonate Post Lab Questions...
Z Х С 90 36 Command Gotion option comand 3.For 5.Og sodium bicarbonate Post Lab Questions 1. If exactly one mole of CO2 was produced in the reaction at 273K and 1.0 atm, how many liters of Co, would this amount of gas occupy? 2. Would exactly one mole of gas occupy the same number of liters at 323K? Explain why or why not 3. Carbon dioxide is a greenhouse gas. According to NASA, the atmospheric concentration of CO2 is...
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium s...
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium salt produced when sulfanilic acid is reacted with sodium nitrite and hydrochloric acid. Next draw the dye that is produced when the diazonium salt is reacted with the 2-naphthol anion. What is the name of this dye? 3. Which direct dyeing procedure worked best for Orange I1? Briefly explain. 4. Compare ing rain dyeing and direct dyeing with Orange II. Which worked...
10.5 Name: Instructor: Show all work for full credit 1. Look up Na2SO4 and BaCl2 in...
10.5 Name: Instructor: Show all work for full credit 1. Look up Na2SO4 and BaCl2 in the CRC Handbook of Chemistry and Physics. Note both their Precipitation of Barium Sulfate- Post-Lab Questions Date: Section/Group: color and their solubility. How do we know which product is the precipitate? 2. Explain the role of limiting and excess reagents in any chemical experiment.
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORKI 1. What is meant when one says that a buffer has a high buffer capacity? 2. What differences did you notice when you added acid or base to distilled water as compared to the buffer solutions? 3. The blood buffer system is made up of H2CO3 and HCO3-. Describe with the use of equations how this system responds to added H3O* and to added OH-. POST LAB...
Post Lab Questions: To receive full credit, you must SHOW ALLOON 1. What is meant when one says that a buffer has a high buffer capacity! 2. What differences did you notice when you added acid or base to distilled water as compared to the buffer solutions? 3. The blood buffer system is made up of H2CO3 and HCO3-. Describe with the use of equations how this system responds to added H3O+ and to added OH-. Looking at the fractional...
procedure, observation and result of this lab
PHYSİCALAND CHEMICAL CHANGES FURPOSE: To determine whether changes in matter are physical changes or chemical changes. Sodium Chloride (NaCI) Magnesium Ribbon MATERIALS: Iodine Crystal Sucrose Sulfuric Acid PROCEDURE: 1. Salt. Dissolve a little table salt NaCI) in a test tube which is one fourth full of water. Dip a stirring rod into the solution and hold it over the Bunsen flame. What is the white substance? Has there been a physical or chemical...
Questions 1 and 2 please
Post-lab Questions (Show logic and calculations for full credit) Sodium trioxalatocobaltate(II) trihydrate is prepared by the following reactions: What is the percent yield of (Assume excess amounts of the other reagents.) Na, [Co(C,O) H,O if7.6 g are obtained from 12.5 g of [Co(H,O),JCl,? 2. Why are K,[Cr(C,O,)] 3HsO, K,[Cu(C,O) 3H,O, and K,[Fe(C,o) 3H,O colored, whereas [AI(C,0)J 3H2O is colorless? 3. Predict the magnetic susceptibilities (para- or diamagnetic) and determine the number of unpaired elec- trons...
PRE-LAB or POST-LAB QUIZ Name Instructor/Section PRE-LAB or POST-LAB QUIZ Multiple choice questions. Circle your answers. I. The process of carrying out an analysis where a measured volume of a chemical hav- ing an UNKNOWN concentration is reacted with a measured volume of a chemical having a KNOWN concentration is called a. the neutralization point. b. the equivalence point. c. the end point. d. a titration. 2. In volumetric analysis, the point at which the indicator changes color is called...
Show all work for full credit for problems 1-3. 1. Ibuprofen has the mass percent composition: carbon = 75.69%; hydrogen = 8.80% and oxygen 15.51%. Calculate the empirical formula. Answer: Pls answer all Questions thanks 2. How many grams of chlorine are in 22.50g of CF3C13? Answer: 3. Silver chloride, used in silver plating, contains 75.27% silver. Calculate the mass of silver chloride in grams required to make 4.8 g of silver metal. Answer: 4. Predict the products and write...
Post Lab Questions: To receive full credit, you must SHOW ALL YOUR WORK!! Use the table of reduction half reactions to answer the following Post-Lab questions: Table 3. Example reduction Reduction Potential Chart half reactions. The easiest to Ce+(aq) + 3e - Ce3+ (aq) reduce is at the top. The more Au3+ (aq) + 3e Au(s) difficult to reduce is at the bottom. Cl2(g) + 2e 2CH(ag) Ag+ (aq) + e- Ag(s) Fe3+ (aq) + e- Fe2+ (aq) AgCl(s) +...
Z Х С 90 36 Command Gotion option comand 3.For 5.Og sodium bicarbonate Post Lab Questions 1. If exactly one mole of CO2 was produced in the reaction at 273K and 1.0 atm, how many liters of Co, would this amount of gas occupy? 2. Would exactly one mole of gas occupy the same number of liters at 323K? Explain why or why not 3. Carbon dioxide is a greenhouse gas. According to NASA, the atmospheric concentration of CO2 is...
Post Lab Questions 1. Explain the chemical difference between direct dyes and ingrain dyes. 2. Draw the diazonium salt produced when sulfanilic acid is reacted with sodium nitrite and hydrochloric acid. Next draw the dye that is produced when the diazonium salt is reacted with the 2-naphthol anion. What is the name of this dye? 3. Which direct dyeing procedure worked best for Orange I1? Briefly explain. 4. Compare ing rain dyeing and direct dyeing with Orange II. Which worked...
10.5 Name: Instructor: Show all work for full credit 1. Look up Na2SO4 and BaCl2 in the CRC Handbook of Chemistry and Physics. Note both their Precipitation of Barium Sulfate- Post-Lab Questions Date: Section/Group: color and their solubility. How do we know which product is the precipitate? 2. Explain the role of limiting and excess reagents in any chemical experiment.
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