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A 190.00 mL solution of 0.00300 M AB4 is added to a 340.00 mL solution of 0.00265 M CD5. What is pQsp for AD4?
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- A 250.00 mL solution of 0.00215 M AB4 is added to a 230.00 mL solution of 0.00380 M C3D2. What is pQsp for A3D4? Answer: (18.607)You need to make 100 mL of 1% Atropine sulfate solution and make it isotonic with sodium chloride Atropine sulfate has a MW of 695 and is 3 ions. (E = 0.12) For 100 ml of 1% atropine sulfate we have 1 g of atropine sulfate 1: How much NaCl is the atropine sulfate equivalent to 2 How much Sodium Chloride would be needed to make 100 mL of water isotonic? 3 How much sodium chloride should be added to the 1% atropine sulfate solution to make it isotonicA 50.00 (±0.02) mL portion of an HCl solution required 29.71(±0.02) mL of 0.01963(±0.0032) M Ba(OH)2 to reach an end point with bromocresol green indicator. ? of HCL = 29.71?? ? 0.01963 ???? ??(??)2 ?? ? 2 ???? ??? ???? ??(??)2/ 50.00?? = 0.02333 ? Calculate the uncertainty of the result (absolute error).Calculate the coefficient of variation for the result.
- What is the Ksp expression for PbCl2 in water? Group of answer choices Ksp = [Pb2+][Cl–]2 Ksp = [Pb2+][Cl–] Ksp = [??2+][??−]2[????2][Pb2+][Cl−]2[PbCl2] Ksp = [??2+][??−][????2][?2?][Pb2+][Cl−][PbCl2][H2O]Was wondering how to solve this hw problem? Calcium Flouride (dissociation) K@25 C = 3.94 *10^-11 Calcium fluoride is not very soluble in water. ** Its dissociation is: CaF2 (s) Ca²+ (aq) + 2 F¯ (aq) a. At 25°C, how many milligrams of CaF2 would dissolve in 2.0 L of water? b. What were your initial and final values of Q?a) Succinimide is an organic compound used in many syntheses as a building block and is related to a class of drugs known as anticonvulsants. Given the following solubility of succinimide in water and methanol, which would be a better solvent for recrystallizing succinimide? Solubility data: 1 gram of succinimide is soluble in 5 mL of cold water, 3 mL of water at room temperature and 0.7 mL of boiling water. 1 gram of succinimide is soluble in 30 mL of cold methanol, 24 mL of room temperature methanol and 5 mL of hot methanol. Show calculations.b) A researcher wanted to purify 0.4 grams of crude succinimide via recrystallization using only 2 mL of solvent. Decide the best solvent to use (water or methanol) to show the maximum % recovery of the researcher. The best solvent chosen here, may differ from the one chosen in part a.
- 3What is the ratio strength of benzalkonium chloride in a nasal spray that contains 125 µg/mL of the ingredient? a 1:8 b 1:80 c 1:800 d 1:8000Answer in 3 sigfigs only. A solution contains 0.0123 M KCl and 0.0115 M NaCl. Calculate the expected pCl of the solution.In the spectrofluorometric analysis of quinine, which of the following statements/phrases can be considered a factor level? A. concentration of 2ppm of iodide B. concentration of quenchers C. use of quenchers D. use of iodide
- Barium sulfate is a contrast agent for X-ray scans that are most often associated with the gastrointestinal tract. Calculate the mass of BaSO4that can dissolve in 100.0 mL of solution. The Ksp value for BaSO4is 1.5 × 10−9.SELECT correct responses only 1) Volume percent (v/v%) is temperature-independent. 2) There are three major approaches to expressing solution concentration in terms of percent concentration: weight percent, volume percent, and weight/volume percent. 3) Weight/volume percent (w/v%) is a unit-less quantity. 4) The term 'percent' refers to 'parts per thousand'. 5)A standard solution is a reagent of known concentration that is used to carry out a volumetric titration. 6) The endpoint of a titration is the theoretical point reached when the amount of added titrant is chemically equivalent to the amount of analyte in a sample. 7) A substance that changes color in response to chemical equivalence is known as an indicator. 8) Given a sufficiently diligent and experienced experimenter, it is sometimes possible to reach a titration volume error value of 0.Succinimide is an organic compound used in many syntheses as a building block and is related to a class of drugs known as anticonvulsants. Given the following solubility of succinimide in water and methanol, which would be a better solvent for recrystallizing succinimide? Solubility data: 1 gram of succinimide is soluble in 5 mL of cold water, 3 mL of water at room temperature and 0.7 mL of boiling water. 1 gram of succinimide is soluble in 30 mL of cold methanol, 24 mL of room temperature methanol and 5 mL of hot methanol. Show all calculations.