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4 of 8 > Review Constants Periodic Table Part A minol, is used he scenes for...
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution of luminol is often sprayed onto surfaces that are suspected of containing minute amounts of blood. Luminol has a molecular weight of 177 g/mol. Part A The forensic technician at a crime scene has just prepared a luminol stock solution by adding 16.0...
The forensic technician at a crime scene has just prepared a luminol stock solution by adding...
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 16.0 g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. molarity of luminol solution = 1.21 M Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.00×10−2M. The diluted solution is then placed in a spray...
Part A The forensic technician at a crime scene has just prepared a luminol stock solution...
Part A The forensic technician at a crime scene has just prepared a luminol stock solution by adding 14.0g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. molarity of luminol solution = 1.05 M SubmitHintsMy AnswersGive UpReview Part Correct Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00�10?2M . The diluted...
(( 6 of 14 Review Constants 1 Periodic Table Before investigating the scene, the technician must...
(( 6 of 14 Review Constants 1 Periodic Table Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00x10-2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. used mes for olis so en minol is cted of How many moles of luminol are present in 2.00 L of the diluted spray? Express your answer with the appropriate units. View Available Hint(s) mol. o 2 ?...
The forensic technician at a crime scene has just prepared a luminol stock solution by adding...
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 17.0 g of luminol to H_2O creating a solution with a total volume of 75.0 mL. What is the molarity of the stock solution of luminol? 1.28M Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00×10^-2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. How many moles of...
chem
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 g of luminol into a total volume of 75.0 mL of H2O.What is the molarity of the stock solution of luminol?Express your answer with the appropriate units.molarity of luminol solution =1.51MPart BBefore investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×10−2 M. The diluted solutionis then placed in a spray bottle for application on the desired surfaces.How many moles of...
5 of 5 > Review I Constants 1 Periodic Table Part A A beaker with 145...
5 of 5 > Review I Constants 1 Periodic Table Part A A beaker with 145 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 mol L-1. A student adds 8.40 mL of a 0.410 mol L-HCl solution to the beaker. How much will the pH change? The pK, of acetic acid is 4.760. Express your answer numerically to two...
2559b3823f31 > 8 of 28 A Review Constants Periodic Table ✓ Correct Part B What is...
2559b3823f31 > 8 of 28 A Review Constants Periodic Table ✓ Correct Part B What is the final volume V2 in milliliters when 0.572 L of a 43.8 % (m/v) solution is diluted to 21.2% (m/v)? Express your answer numerically in milliliters. View Available Hint(s) ? ml IVO AXO V₂V_2= Submit 8 of 28 M Review | Constants Periodic Table Part C A 554 ml NaCl solution is diluted to a volume of 1.08 L and a concentration of 2.00...
PassignmentProblemID=138307351 < 1 of7 Review Constants 1 Periodic Table Part A Calculate the mass percent of...
PassignmentProblemID=138307351 < 1 of7 Review Constants 1 Periodic Table Part A Calculate the mass percent of a solution that is prepared by adding 71.3 g of NaOH to 328 g of H20. Express your answer numerically. View Available Hint(s) O AED O 2 ? % (m/m) Submit Part B Calculate the mass/volume percent of a NaCl solution in which 102 g of NaCl is dissolved in enough water to give a total volume of 3.10 L Express your answer numerically....
( 29 of 29 Part A A Review | Constants 1 Periodic Table Estimate the volume,...
( 29 of 29 Part A A Review | Constants 1 Periodic Table Estimate the volume, V, of one sodium atom (Na) using its metallic radius of 186 pm. Express your answer with the appropriate units. View Available Hint(s) O'! Å Value MO? Units V- Submit Part R Comnlete nrevious parts)
(( 6 of 14 Review Constants 1 Periodic Table Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00x10-2 M. The diluted solution is then placed in a spray bottle for application on the desired surfaces. used mes for olis so en minol is cted of How many moles of luminol are present in 2.00 L of the diluted spray? Express your answer with the appropriate units. View Available Hint(s) mol. o 2 ?...
5 of 5 > Review I Constants 1 Periodic Table Part A A beaker with 145 mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 mol L-1. A student adds 8.40 mL of a 0.410 mol L-HCl solution to the beaker. How much will the pH change? The pK, of acetic acid is 4.760. Express your answer numerically to two...
2559b3823f31 > 8 of 28 A Review Constants Periodic Table ✓ Correct Part B What is the final volume V2 in milliliters when 0.572 L of a 43.8 % (m/v) solution is diluted to 21.2% (m/v)? Express your answer numerically in milliliters. View Available Hint(s) ? ml IVO AXO V₂V_2= Submit 8 of 28 M Review | Constants Periodic Table Part C A 554 ml NaCl solution is diluted to a volume of 1.08 L and a concentration of 2.00...
PassignmentProblemID=138307351 < 1 of7 Review Constants 1 Periodic Table Part A Calculate the mass percent of a solution that is prepared by adding 71.3 g of NaOH to 328 g of H20. Express your answer numerically. View Available Hint(s) O AED O 2 ? % (m/m) Submit Part B Calculate the mass/volume percent of a NaCl solution in which 102 g of NaCl is dissolved in enough water to give a total volume of 3.10 L Express your answer numerically....
( 29 of 29 Part A A Review | Constants 1 Periodic Table Estimate the volume, V, of one sodium atom (Na) using its metallic radius of 186 pm. Express your answer with the appropriate units. View Available Hint(s) O'! Å Value MO? Units V- Submit Part R Comnlete nrevious parts)
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