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Concentrated nitric acid - look up Prepare a 2% nitric acid solution with a !liter From concentra...
You wish to make a 0.132 M nitric acid solution from a stock solution of 6.00...
You wish to make a 0.132 M nitric acid solution from a stock solution of 6.00 M nitric acid. How much concentrated acid must you add to obtain total volume of 175 mL of the dilute solution? Submit Answer Retry Entire Group more group attempts remaining 1 pts are In the laboratory a student combines 37.6 ml of a 0.289 M potassium sulfide solution with 22.5 ml of a 0.629 M potassium carbonate solution What is the final concentration of...
Lead is dissolved in concentrated nitric acid, HNO3, solutions according to the following equation: Pb(s) +...
Lead is dissolved in concentrated nitric acid, HNO3, solutions according to the following equation: Pb(s) + 2 HNO3(aq) → Pb(NO3)2 (aq) + H2(5) How many milliliters of a 10.1 M HNO3 solution are required to react completely with 22.303 g of lead? (1 decimal place, fill in the number ONLY!)
Indicate the appropriate protocol below to prepare the required solution A) Solution 1 Preparation: Prepare: 1...
Indicate the appropriate protocol below to prepare the required solution A) Solution 1 Preparation: Prepare: 1 liter of 2 Molar Tris From: solid Tris, MW = 121.1 g/mol Procedure: B) Solution 2 Preparation: Prepare: 1 liter of 0.01 mg/mL ascorbic acid From: solid ascorbic acid , MW = 176.1 g/mol Procedure: C) Solution 3 Preparation: Prepare: 1 liter of 100 mM Tris From: 1 Molar Tris stock solution Procedure: D) Solution 4 Preparation: Prepare: 1 liter of 50 mM CaCl2...
THE DETERMINATION OF IRON BY SPECTROPHOTOMETRY INTRODUCTION In this experiment, the red-orange colored complex formed between...
THE DETERMINATION OF IRON BY SPECTROPHOTOMETRY INTRODUCTION In this experiment, the red-orange colored complex formed between iron(II) and 1,10- phenanthroline (Eqn.) is used in determination of iron by spectrophotometry. Fe+3PhenH Fe(Phen)2 +3H red-orange (A 512 nm) An excess of reducing reagent, such as hydroxylamine or hydroquinone, is often used to reduce and maintain iron in +2 oxidation state. The complex, once formed, is very stable, and can be stored for a long time. Required Reading: Skoog and West (9E): Chapter...
Help. Determine the new concentration of Zn^2+ ion in grams per liter after mixing 50 ml...
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Determine the new concentration of Zn^2+ ion in grams per liter after mixing 50 ml of 0.025 M ZnCl_2 and 100 mL of 0.150 M Zn(NO+3)_2 A 50.0 mL sample of goat's milk was analyzed to contain 150 mu g calcium Express the concentration of calcium in the milk in mg/dL Describe the preparation of 500 mL 0.250 M HNO_3 solution from concentrated nitric acid, 90% (w/w) of density 1.51 g/mL. 1 L of 150.0 ppm OH^- solution using...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
PROCEDURE 1. Prepare three 100 mL beakers for this experiment. Use the molecular weights on the bottles to calculate the amount of solid to use. a. *b. Prepare 25 mL of a 10 M NaOH solution (concentr...
PROCEDURE 1. Prepare three 100 mL beakers for this experiment. Use the molecular weights on the bottles to calculate the amount of solid to use. a. *b. Prepare 25 mL of a 10 M NaOH solution (concentrated NaOH solution). Calculate the amount of solid NaOH needed to make. *c. Prepare 50 mL of a 20 mM histidine solution (calculate the amount of solid histidine needed to make it, m.w. 209.6 g/mol). In the fume hood, add 3 drops of concentrated...
Nitrobenzene is made by the direct nitration of benzene by nitric acid in the presence of...
Nitrobenzene is made by the direct nitration of benzene by nitric acid in the presence of strong sulphuric acid solution: CHe+HNOCH,NO2+H2O The actual nitrating agent is the nitronium ion, NO27, and the sulphuric acid is needed to generate this from the nitric acid feed Reconcentrated sulphuric acid, of strength 74% by weight and XC is mixed with pure nitric acid at 25°C to give a nitric acid strength in the mixture of 7.5% by weight. The heat of mixing causes...
• Consider disposing of 2 liter 18 Molar solution of sulfuric acid by pouring it down...
• Consider disposing of 2 liter 18 Molar solution of sulfuric acid by pouring it down the drain the faucet running. If the regulations required that any material put down the drain must have a pH greater than 2.0 and less than 12.5 in order to protect the aquatic environment and the bacteria in the local wastewater treatment plant not to mention the pipe in the sewerage system. There is two options to dispose of the acid safe and quickly:...
2. What is the molality of a concentrated solution of NH4Cl at 90°C (see diagram)? Solubility...
2. What is the molality of a concentrated solution of NH4Cl at 90°C (see diagram)? Solubility vs. Temperature for Solids KI NaNO, gases solids KNO, NH,Cl Solubility (grams of solute/100 g H20) KCI 3. If a 250. g solution with 21.4% KClO3 is concentrated, what must be the temperature of the solution (see diagram)? Nach AKCIO 0 SO 10 20 30 40 50 60 70 80 90 100 Temperature °C 4. Calculate the molarity of a solution of copper (11)...
You wish to make a 0.132 M nitric acid solution from a stock solution of 6.00 M nitric acid. How much concentrated acid must you add to obtain total volume of 175 mL of the dilute solution? Submit Answer Retry Entire Group more group attempts remaining 1 pts are In the laboratory a student combines 37.6 ml of a 0.289 M potassium sulfide solution with 22.5 ml of a 0.629 M potassium carbonate solution What is the final concentration of...
Lead is dissolved in concentrated nitric acid, HNO3, solutions according to the following equation: Pb(s) + 2 HNO3(aq) → Pb(NO3)2 (aq) + H2(5) How many milliliters of a 10.1 M HNO3 solution are required to react completely with 22.303 g of lead? (1 decimal place, fill in the number ONLY!)
THE DETERMINATION OF IRON BY SPECTROPHOTOMETRY INTRODUCTION In this experiment, the red-orange colored complex formed between iron(II) and 1,10- phenanthroline (Eqn.) is used in determination of iron by spectrophotometry. Fe+3PhenH Fe(Phen)2 +3H red-orange (A 512 nm) An excess of reducing reagent, such as hydroxylamine or hydroquinone, is often used to reduce and maintain iron in +2 oxidation state. The complex, once formed, is very stable, and can be stored for a long time. Required Reading: Skoog and West (9E): Chapter...
Help.
Determine the new concentration of Zn^2+ ion in grams per liter after mixing 50 ml of 0.025 M ZnCl_2 and 100 mL of 0.150 M Zn(NO+3)_2 A 50.0 mL sample of goat's milk was analyzed to contain 150 mu g calcium Express the concentration of calcium in the milk in mg/dL Describe the preparation of 500 mL 0.250 M HNO_3 solution from concentrated nitric acid, 90% (w/w) of density 1.51 g/mL. 1 L of 150.0 ppm OH^- solution using...
2. How many ml of a 50% w/v acetic acid solution are required to prepare 1 L of 5% w/v acetic acid? 3. How many ml of concentrated HNOs are required to prepare 2L of 0.15N HNOs? 4. How many milliliters of a stock solution of 20% w/v NaOH are required to prepare 800 ml of a 2.5% w/v solution? 5. Suppose that you start with a 5X solution A and you want a final volume of 10 microliters of...
PROCEDURE 1. Prepare three 100 mL beakers for this experiment. Use the molecular weights on the bottles to calculate the amount of solid to use. a. *b. Prepare 25 mL of a 10 M NaOH solution (concentrated NaOH solution). Calculate the amount of solid NaOH needed to make. *c. Prepare 50 mL of a 20 mM histidine solution (calculate the amount of solid histidine needed to make it, m.w. 209.6 g/mol). In the fume hood, add 3 drops of concentrated...
Nitrobenzene is made by the direct nitration of benzene by nitric acid in the presence of strong sulphuric acid solution: CHe+HNOCH,NO2+H2O The actual nitrating agent is the nitronium ion, NO27, and the sulphuric acid is needed to generate this from the nitric acid feed Reconcentrated sulphuric acid, of strength 74% by weight and XC is mixed with pure nitric acid at 25°C to give a nitric acid strength in the mixture of 7.5% by weight. The heat of mixing causes...
2. What is the molality of a concentrated solution of NH4Cl at 90°C (see diagram)? Solubility vs. Temperature for Solids KI NaNO, gases solids KNO, NH,Cl Solubility (grams of solute/100 g H20) KCI 3. If a 250. g solution with 21.4% KClO3 is concentrated, what must be the temperature of the solution (see diagram)? Nach AKCIO 0 SO 10 20 30 40 50 60 70 80 90 100 Temperature °C 4. Calculate the molarity of a solution of copper (11)...
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