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Name Prelaboratory Assignment 9 (25 pts) 1. A sample of 0.72 g of Al is reacted...
Name Prelaboratory Assignment 9 (25 pts) 1. A sample of 0.72 g of Al is reacted with 17.0 mL of 2.4 M KOH. Which one...
Name Prelaboratory Assignment 9 (25 pts) 1. A sample of 0.72 g of Al is reacted with 17.0 mL of 2.4 M KOH. Which one is the limiting reagent? SHOW WORK 9 pts 2Al (s)+ 2KOH (aq) + 6 H2O ()-2KAI(OH), (aq)+ 3 H: (g) 2. If a salt has a solubility of 27.2 g/100 mL water at 25 °C, what volume of water would be needed to dissolve 12.4 g of the salt? 6 pts 3. Calculate the theoretical...
Data Sheet: Experiment 9 Name Date Performed 75 pts 1. Mass of Al metal reacted. 0.51...
Data Sheet: Experiment 9 Name Date Performed 75 pts 1. Mass of Al metal reacted. 0.51 09 2. Mass of alum product 6.80 3. Theoretical yield of alum 10 pts 4. Percent yield of alum, KAl(SO4)2 12H2O 10 pts 15 pts Calculations: Volume of water necessary to dissolve the 6.80 g alum crystals: mL. 9 pts 5. Write the net ionic equations for the reactions of the following compounds with KOI 21 pts . AINO.). (a) ові ове с
Exercises: Experiment 9 25 pts Name 1. Write the net ionic equations for the reactions which...
Exercises: Experiment 9 25 pts Name 1. Write the net ionic equations for the reactions which occurred when aqueous KOH was initially added to: 12 pts a. Al(NO3), (aq) b. Fe(NO3)2 (aq) 000000004AAAAAAAAA c. Ni (NO3)2 (aq) AAAAAAUUU 2. How do the results you observed when excess KOH was added illustrate the amphoteric nature of aluminum hydroxide? Explain! 5 pts 3. Refer to your results in the solubility rule experiment (Experiment 5) to predict what would happen if the initial...
can someone help answer this please? Experiment 2 - Preparation of Alum Evaluation Question 1 Part...
can someone help answer this please?
Experiment 2 - Preparation of Alum Evaluation Question 1 Part (a) Calculate the volume of 1.0 M KOH solution required to completely dissolve 0.5589 g of aluminium. The balanced chemi follows: 2Al(s) + 2KOH(aq) + 6H2O(0) -> 2Al(OH)4 (aq) + 2K+ (aq) + 3H2(g) (Please give your answer to 2 significant figures.) mL KOH Check Answer Part (b) The 0.5589 g of aluminium metal from Part (a), reacted with excess potassium hydroxide to produce...
Name Lab testructo Experiment 9-Determinations of Cencentrations of Colered Solutions Prelaboratory Exercises i. Iya15.0 inL solon...
Name Lab testructo Experiment 9-Determinations of Cencentrations of Colered Solutions Prelaboratory Exercises i. Iya15.0 inL solon of 25 St Nici i, diluted to a volume or 100 inL (1.00×10/ mL. whar is the mclarity (M of the diluted solution? Show all your steps with the fomals 2.Asoltion of0.40 M NİSO, has an absorbance, X. If this solution is diluted to give a 0.1 M solution, answer the following Will the absorhance of the 0.10 M solution decrease or increase? b....
Post La DUI LUI U UUDLUNS What is the biggest factor that causes vields of alum...
Post La DUI LUI U UUDLUNS What is the biggest factor that causes vields of alum in this experiment to be low? using too much Hasoy whold cause the yield to be in 2. A student reacted 1.01 g of Al with 25.0 mL of 2.00 M KOH according to the following reaction: 2Al(s) + 2KOH(aq) +6H2O(0) ► 2KAI(OH)4 + 3H2(g) a. How many moles of KOH were required to react with all of the aluminum? b. How many moles...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
im trying to solve for the remaining but im confused please help this is experiment 25...
im
trying to solve for the remaining but im confused please help this
is experiment 25 Calorimetry
HNO B. Enthalpy (Heat) of Neutralization for an Acid-Base Reaction H Poting flendar HCI + NaOH uuemliojo Trial 1 Trial 2 1. Volume of acid (mL) 50 - 60 Site 2. Temperature of acid (C) ao 20" 3. Volume of NaOH (ml) 20 4. Temperature of NaOH (C) Trial 1 5. Exact molar concentration of NaOH (mOVL) 6. Maximum temperature from graph (°C)...
mixed. (1) 9.110.274 moles of a substance weighs 62.5 g. what is the molar mass of...
mixed. (1) 9.110.274 moles of a substance weighs 62.5 g. what is the molar mass of the substance, in units of g/mol? (1) 228 g/mol (2) 17.1 g/mol (3) 4.38 x 10 g/mol (4) 62.8 g/mol 10. Identify the correct net ionic equation for the reaction that occurs when solutions of Ba(CIO) and KSOiare (1) Ba?"(aq) + SO2(aq) +BaSO4(s) (2) 2K (aq) + 2CIO (aq) - K(CIO)a(s) (3) Kla) ClOc(aq) - KCIO (S) (4) Bal(aq) + (aq) + SOP(q)- kBaSO4(6)...
Information from the appendix is attached: 5. (20 pts) Consider the following reaction OF2(g) + H2O(g)...
Information from the appendix is attached:
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH (kJ/mole) = -318 kJ/mole (a) Using this information along with data in the appendix of your textbook, calculate AH (OF, (g)) in kJ/mole at 25°C. (b) If 15.0 g of OF2(g) and 10.0 g of H2Og) react, how much heat, expressed in kJ is released? Hint: First calculate the limiting reagent. 6.(20 pts) Consider two Styrofoam coffee cups....
Name Prelaboratory Assignment 9 (25 pts) 1. A sample of 0.72 g of Al is reacted with 17.0 mL of 2.4 M KOH. Which one is the limiting reagent? SHOW WORK 9 pts 2Al (s)+ 2KOH (aq) + 6 H2O ()-2KAI(OH), (aq)+ 3 H: (g) 2. If a salt has a solubility of 27.2 g/100 mL water at 25 °C, what volume of water would be needed to dissolve 12.4 g of the salt? 6 pts 3. Calculate the theoretical...
Data Sheet: Experiment 9 Name Date Performed 75 pts 1. Mass of Al metal reacted. 0.51 09 2. Mass of alum product 6.80 3. Theoretical yield of alum 10 pts 4. Percent yield of alum, KAl(SO4)2 12H2O 10 pts 15 pts Calculations: Volume of water necessary to dissolve the 6.80 g alum crystals: mL. 9 pts 5. Write the net ionic equations for the reactions of the following compounds with KOI 21 pts . AINO.). (a) ові ове с
Exercises: Experiment 9 25 pts Name 1. Write the net ionic equations for the reactions which occurred when aqueous KOH was initially added to: 12 pts a. Al(NO3), (aq) b. Fe(NO3)2 (aq) 000000004AAAAAAAAA c. Ni (NO3)2 (aq) AAAAAAUUU 2. How do the results you observed when excess KOH was added illustrate the amphoteric nature of aluminum hydroxide? Explain! 5 pts 3. Refer to your results in the solubility rule experiment (Experiment 5) to predict what would happen if the initial...
can someone help answer this please?
Experiment 2 - Preparation of Alum Evaluation Question 1 Part (a) Calculate the volume of 1.0 M KOH solution required to completely dissolve 0.5589 g of aluminium. The balanced chemi follows: 2Al(s) + 2KOH(aq) + 6H2O(0) -> 2Al(OH)4 (aq) + 2K+ (aq) + 3H2(g) (Please give your answer to 2 significant figures.) mL KOH Check Answer Part (b) The 0.5589 g of aluminium metal from Part (a), reacted with excess potassium hydroxide to produce...
Name Lab testructo Experiment 9-Determinations of Cencentrations of Colered Solutions Prelaboratory Exercises i. Iya15.0 inL solon of 25 St Nici i, diluted to a volume or 100 inL (1.00×10/ mL. whar is the mclarity (M of the diluted solution? Show all your steps with the fomals 2.Asoltion of0.40 M NİSO, has an absorbance, X. If this solution is diluted to give a 0.1 M solution, answer the following Will the absorhance of the 0.10 M solution decrease or increase? b....
Post La DUI LUI U UUDLUNS What is the biggest factor that causes vields of alum in this experiment to be low? using too much Hasoy whold cause the yield to be in 2. A student reacted 1.01 g of Al with 25.0 mL of 2.00 M KOH according to the following reaction: 2Al(s) + 2KOH(aq) +6H2O(0) ► 2KAI(OH)4 + 3H2(g) a. How many moles of KOH were required to react with all of the aluminum? b. How many moles...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
im
trying to solve for the remaining but im confused please help this
is experiment 25 Calorimetry
HNO B. Enthalpy (Heat) of Neutralization for an Acid-Base Reaction H Poting flendar HCI + NaOH uuemliojo Trial 1 Trial 2 1. Volume of acid (mL) 50 - 60 Site 2. Temperature of acid (C) ao 20" 3. Volume of NaOH (ml) 20 4. Temperature of NaOH (C) Trial 1 5. Exact molar concentration of NaOH (mOVL) 6. Maximum temperature from graph (°C)...
mixed. (1) 9.110.274 moles of a substance weighs 62.5 g. what is the molar mass of the substance, in units of g/mol? (1) 228 g/mol (2) 17.1 g/mol (3) 4.38 x 10 g/mol (4) 62.8 g/mol 10. Identify the correct net ionic equation for the reaction that occurs when solutions of Ba(CIO) and KSOiare (1) Ba?"(aq) + SO2(aq) +BaSO4(s) (2) 2K (aq) + 2CIO (aq) - K(CIO)a(s) (3) Kla) ClOc(aq) - KCIO (S) (4) Bal(aq) + (aq) + SOP(q)- kBaSO4(6)...
Information from the appendix is attached:
5. (20 pts) Consider the following reaction OF2(g) + H2O(g) ---> 2 HF(g) + O2(g) AH (kJ/mole) = -318 kJ/mole (a) Using this information along with data in the appendix of your textbook, calculate AH (OF, (g)) in kJ/mole at 25°C. (b) If 15.0 g of OF2(g) and 10.0 g of H2Og) react, how much heat, expressed in kJ is released? Hint: First calculate the limiting reagent. 6.(20 pts) Consider two Styrofoam coffee cups....
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