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6 Calculate the percentage composition by weight for a mixture of ammonium chloride, silicon dioxide and sodium chl...
Calculate the percentage composition by weight for a mixture of ammonium chloride, silicon dioxide and sodium...
Calculate the percentage composition by weight for a mixture of ammonium chloride, silicon dioxide and sodium chloride using the following data: 1. After heating a mixture with a mass of 10 grams in a fume hood for 15 minutes. The mass of the sample decreased to 6.68 grams. 2.You then added several 5 ML portions of water to the sample, stir for 2 minutes and collected the liquid in a beaker. After heating the silicon dioxide, cool in a d...
Calculate the percentage composition by weight for a mixture of ammonium chloride, silicon dioxide and sodium...
Calculate the percentage composition by weight for a mixture of ammonium chloride, silicon dioxide and sodium chloride using the following data: a.) After heating a mixture with a mass of 10 grams in a fume hood for 15 minutes. The mass of the sample decreased to 6.68 grams. b.) You then add several 5 mL portions of water to the sample, stir for 2 minutes and collected the liquid in a beaker. After heating the silicon dioxide, cool in a...
Part A 1. If you had used more methylene chloride in each step, you could have...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
can someone please answer number one? im so lost DYES AND DYEING CHAPTER 1. Calculate the...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
Calculate the % Al in the sample. Preparation of a stock solution of aluminum. Accurately weigh...
Calculate the % Al in the sample. Preparation of a stock solution of aluminum. Accurately weigh out approximately 1 g of the aluminum foil. Tear it up into small pieces, place the pieces into a covered 250 mL beaker and add 60 mL of 6M HCl. This should be carried out in the fume hood because the reaction is exothermic and leads to violent frothing and emission of vapors. Cool, quantitatively transfer to a 250 mL flask, rinsing with deionized...
calculate the % yield fir the n-butylacetate synthesis. show how you obtained expected yield. Mass of...
calculate the % yield fir the n-butylacetate synthesis. show how
you obtained expected yield.
Mass of final product was 3.4g
INSTRUCTIONS A. SETTING UP THE EXPERIMENT This wetion was completed during Experiment D. Proceed to Part B. anol) and 0.75 mL concentrated H2SO4 1. GOGGLES AND GLOVES. Carefully pour the following materials into a flask: 5 ml glacial acetic acid, 4.5 mLn-butanol (1-butanol) and 0.75 ml 2. Swirl carefully to mix the components thoroughly. 3. Seal the flask well (cork...
are there any synthetic transformations produced in this lab Step 1. Preparation and Recrystallization of a...
are there any synthetic transformations produced in this
lab
Step 1. Preparation and Recrystallization of a Diastereomeric Salt - Synthesis of (R,R)-1,2-Diammoniumcyclohexane mono-(+)-tartrate: In a 150 ml beaker, L-(+)-Tartaric acid (7.5 g, 0.05 mol) is dissolved in 25 mL of distilled water. The solution is stirred as 11.4 g (12.2 mL, 0.10 mol) of 1,2-diaminocyclohexane is added carefully in one portion. (The addition of the diamine is exothermic.) A slurry is formed initially but complete dissolution is observed once addition...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and s...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and solid phases, formation of gas, etc. Write a chemical equation for each to describe the reaction observed. Refer to the procedure for hints. A. Preparation of Copper(ll) Nitrate B. Preparation of Copper(1) Hydroxide C. Preparation of Copper(ll) Oxide D. Preparation of Copper(II) Chloride E. 1. Preparation of Copper Metal 2. Reaction of Aluminum with Hydrochloric acid to give Aluminum Chloride and Hydrogen gas. EXPERIMENT SA THE MANY...
i uploaded everything that was given. Where would I find the experiemental values? Complete the calcula...
i
uploaded everything that was given. Where would I find the
experiemental values?
Complete the calculation summary below. READ THE EXPERIMENTAL DISCUSSION FIRST! REPORT ALL ANSWERS TO THE CORRECT SIGNIFICANT FIGURES. SHOW CALCULATION SET-UP on the next page. PART B: Molarity Determination via Solution Stoichiometry 7.625 g Mass of Empty 50 mL Beaker 7.976 g Mass of Beaker and NaCl (final heating) Mass of NaCl Produced (Experimental Yield of NaCl) moles Moles of Na,CO, Consumed 0.00500 Liter Volume of Na,CO,...
Part A 1. If you had used more methylene chloride in each step, you could have extracted more caffeine. Explain why you did not. Hint - What step would have taken longer (Hint: not drying). PART A Mass of Beaker & Caffeine Mass of Beaker 167.750g 67.6809 Mass of Caffeine 0.0 75 Calculations. Show your work and circle the answers. Mass of caffeine recovered: 012919 b) Actual:.07 % caffeine recovered: a) Predicted: 9 7:213% b) Actual: 92.105% PART B Unknown...
can someone please answer number one? im so lost
DYES AND DYEING CHAPTER 1. Calculate the amounts of salicylic acid, 1-naphthol, 2-naphthol, 8-anilino-1-naph- thalenesulfonic acid ammonium salt, or N,N-dimethylaniline needed for Part 1B of this experiment (use molecules as assigned by your TA). 190mg 3-aminobenzene 2.5mL Sulfonic acid 2.5% sodium carbonate solution 81mg Sodium nitrate 2. What is the purpose of the sodium carbonate in Part 1A? Why do we add glacial acetic acid in Part 13 when we react...
5. Let a square represent an ammonium ion and a circle represent a sulfate ion. Which of the following depicts a small representative volume of a 0.10 M aqueous solution of ammonium sulfate? Water molecules have not been included. For each incorrect answer, state why it is incorrect; be as specific as possible. A в C о ‑ G F None of B these O ODO epresents an ato At 25°C in a 50 mL Erlenmeyer flask were combined 1.050...
calculate the % yield fir the n-butylacetate synthesis. show how
you obtained expected yield.
Mass of final product was 3.4g
INSTRUCTIONS A. SETTING UP THE EXPERIMENT This wetion was completed during Experiment D. Proceed to Part B. anol) and 0.75 mL concentrated H2SO4 1. GOGGLES AND GLOVES. Carefully pour the following materials into a flask: 5 ml glacial acetic acid, 4.5 mLn-butanol (1-butanol) and 0.75 ml 2. Swirl carefully to mix the components thoroughly. 3. Seal the flask well (cork...
are there any synthetic transformations produced in this
lab
Step 1. Preparation and Recrystallization of a Diastereomeric Salt - Synthesis of (R,R)-1,2-Diammoniumcyclohexane mono-(+)-tartrate: In a 150 ml beaker, L-(+)-Tartaric acid (7.5 g, 0.05 mol) is dissolved in 25 mL of distilled water. The solution is stirred as 11.4 g (12.2 mL, 0.10 mol) of 1,2-diaminocyclohexane is added carefully in one portion. (The addition of the diamine is exothermic.) A slurry is formed initially but complete dissolution is observed once addition...
Observations Record observations including appearance of solution (clear, cloudy), color(s) of liquid and solid phases, formation of gas, etc. Write a chemical equation for each to describe the reaction observed. Refer to the procedure for hints. A. Preparation of Copper(ll) Nitrate B. Preparation of Copper(1) Hydroxide C. Preparation of Copper(ll) Oxide D. Preparation of Copper(II) Chloride E. 1. Preparation of Copper Metal 2. Reaction of Aluminum with Hydrochloric acid to give Aluminum Chloride and Hydrogen gas. EXPERIMENT SA THE MANY...
i
uploaded everything that was given. Where would I find the
experiemental values?
Complete the calculation summary below. READ THE EXPERIMENTAL DISCUSSION FIRST! REPORT ALL ANSWERS TO THE CORRECT SIGNIFICANT FIGURES. SHOW CALCULATION SET-UP on the next page. PART B: Molarity Determination via Solution Stoichiometry 7.625 g Mass of Empty 50 mL Beaker 7.976 g Mass of Beaker and NaCl (final heating) Mass of NaCl Produced (Experimental Yield of NaCl) moles Moles of Na,CO, Consumed 0.00500 Liter Volume of Na,CO,...
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