A 40-mL vial of a sodium chloride was diluted to a liter with sterile water. The concentration (w/v) of NaCl (MW 58.5) in the finished product was 0.58%. What was the concentration in mEq per mL of the original solution?

Q: A pipet is used to transfer 6.00 mLmL  of a 3.75 MM  stock solution in flask “S” to a 25.00-mL…

A: The number of moles of compound in 25.00 mL flask “A” is; 1000 mL=1 Ln=3.75 M×6.00 mL1000…

Q: 7) The homogeneity of the chloride level in a water sample from a lake was tested by an analyst.…

A: The homogeneity of the chloride level in a water sample from a lake was tested by an analyst.

Q: 5 grams of cereal was crushed and dissolved in 25 mL water and placed in a dialysis bag. This sample…

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Q: Compute the weight (g) of solute needed to make the solutions listed below: a. 1250 mL of 0.85 M…

A: Hello. Since your question has multiple parts, we will solve the first question for you. If you want…

Q: if a pharmacist used one 50-mg tablet of a drug to prepare 30 ml of an otic suspension in sweet oil,…

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Q: A 100.0-ml sample of boiler feed water, analyzed for hardness, required 36.8 ml of 0.0386 M EDTA to…

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Q: Questions 4 and 5 pertain to the following scenario: The patient needs 500 g of the above ointment…

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Q: What is the concentration of the solution prepared by diluting 200 µl of kanamycin (25 mg/ml) to a…

A: (1 )Kanamycin have 25mg/ml That is 1 ml have 25 mg 200 u ml= 10-9x 200 ml = 2 x 10-7 ml have = 2 x…

Q: A solution of Ca(OH)2 (FM = 74.09) was used in determining the equivalent weight of an unknown acid.…

A: Given data contains, Mass of KHP is 0.1235g. Volume of KHP is 7.45mL. Mass of unknown acid is…

Q: PRE-LAB QUESTIONS 1. Calculate the molarity of a 6.15% (w/v%) sodium hypochlorite (NAOCI) solution.…

A: A question based on quantitative analysis, which is to be accomplished.

Q: A student wanted to determine the level of lead in amoxicillin powder, so he transferred 148 mg of…

A: Given: The absorbance of the diluted solution, y = 0.48  Calibration equation is given by  y = 12.25…

Q: A powder batch requires mixing 150 mg of oxazepam powder, 2 gr of dye, and enough lactose to make…

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Q: 3What

A: In order to determine the ratio strength, let us first calculate the amount of benzalkonium chloride…

Q: Tirofiban (C22H36N2O5S MWt = 440.6) is present as tirofiban HCI monohydrate MWt=495.1) at 0.281…

A: Given the concentration of tirofiban HCl before infusion = 0.281 mg/mL  Since we need tirofiban,…

Q: In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3.…

A: We have to find out the millimoles of NaIO3 are there in the solution

Q: 15. Calculate the mass of Cefaclor (purity 95% w/w) needed to prepare 250 ml of 500 ppm (w/V)…

A: Please find the attached solution below

Q: prepare a solution with a concentration of 0.500 mol·dm⁻³ in a 250 cm³ volumetric flask. [Round the…

A: Concentration (M) = 0.500 M/dm3 Volume = 250 cm3  =250/1000 = 0.250 dm3 Now, we know,  Molarity(M)…

Q: An environmental chemist working for the Environmental Protection Agency (EPA) was directed to…

A: Varying amounts of 85.0 ppb (μg/L) Cd2+ standard solution were added to the unknown sample solution.…

Q: For 0.250 L of aqueous solution with a density of 1.00 g/mL containing 13.7 mg of pesticide, express…

A: The concentration   usually expressed in parts per million ppm  and parts per billion ppb. It is…

Q: Will a ppt of PBCO3 (s) form if you mix 30 mL of 1.3х 108 М РЫ(NO3)2 (aq) with 120 mL of 5.7 x 10-6…

A: Option (4) is the correct  choice.

Q: Determine the mass of sodium chloride required to prepare 300 ml of a Mueller-Hinton broth…

A: Concentration is equal to the ratio of the number of moles to the volume of solution. The unit of…

Q: A patient weighing 119lb is to receive 300 mg of medication in 750 mL solution is to be titrated at…

A: Patients weight = 119 lb 300 mg of medication is present in 750 mL solution

Q: What is the density of 47.0 wt% aqueous NaOH (FM 40.00) if 17.6 mL of the solution diluted to 1.80 L…

A: Here we have,47.0 wt% (0.47%) aqueous NaOH (FM 40.00) [47 g NaOH in 100 ml water]Volume of NaOH…

Q: A 5.69 g of table salt (NaCl) is dissolved and added with water up to 150 mL. Calculate the % (w/v)…

A: Given that,  Weight of NaCl dissolved in water = 5.69 g Volume of NaCl solution in water = 150 mL

Q: 1) Mass of aspirin used (g) 0.088g 2) Absorbance for final unknown solution (measured) 3) Molarity…

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Q: 2. How many grams of Cu(C2H302)2 · H20 (FW = 199.65 g/mol) are needed to prepare 500.0 mL of %3D a…

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Q: If exactly 200.0 mL of an aqueous solution that is 1.037E3 ppb Pb(NO3)2 (331.2 g/mol) is mixed with…

A: 1 ppb = 1 ug / L  1 mL = 10^-3 L  1 femto (f) = 10^-15

Q: A solution of Ca(OH)2 (FM = 74.09) was used in determining the equivalent weight of an unknown acid.…

A: The number of moles of KHP can be determined as follows: Number of moles of KHP = Given mass of…

Q: 1. What is the MW of the analyte? 2. What is the meq of the analyte? 3. What will be the weight (in…

A: Since you have asked a question with multiple subparts we will answer the first three for you. To…

Q: What is qH2O? WHat is qrxn? WhaT IS

A: Given He measured 10 grams of KClO3 and dissolved it in a calorimeter containing 250 g of water. The…

Q: Nitric acid samples were prepared by diluting the 68 w/v% high purity-grade or 61 w/v% electronic…

A: 68 % w/v means 68 g of HNO3 is present in 100 mL solution. Determination of no. of mol. of HNO3:…

Q: After creating her standard curve for absorption versus the concentration (M) of FD&C Red 40 and…

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Q: Which of the following will result in an increase in the calculated Ksp of Ca(OH)2? Receiving flask…

A: Let's check all the given statements.

Q: How many grams of Na2CO3 are needed to prepare 500cm3 of a solution containing 10.0mg of CO32- per…

A: Solution-  10.0 mg of CO32- per cm3 Therefore  in 500 cm3 solution mass of CO32- = 5000 mg = 5 g…

Q: Stock or starting Serial dilutions done Total dilution factor Final concentration concentration…

A: For first we are provided starting concentration and total dilution factor. We are required to find…

Q: .  The solubility of SrCO3 is 0.0011g per 100 mL at 20ºC. Calculate the Ksp value for this…

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Q: 1-3: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v…

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Q: Calculate the concentration of concentrated HCl in molarity. Concentrated HCl has 38% (w/w) HCl and…

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Q: In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3.…

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Q: 2.9g of beta-napthol and 1.65g of KOH were dissolved in 20ml of methanol with 1.8 ml of etl in a…

A: Theoritical yield is 3.101g Percent of yield 15.15%

Q: 1. What is the MW of the analyte? 2. What is the meq of the analyte? 3. What is the weight (in…

A: Since you have asked a question with multiple subparts we will answer the first three for you. To…

Q: 1. How many mg of sodium acetate (MW=82.03, feg=1) is equivalent to 1 ml of 0.5 N sulfuric acid? 2.…

A: According to law of equivalence, A reactant exactly reacts with the same number of equivalents of…

Q: ou separated acetanlide from sand and sodium chloride (NaCl) via recrystallization. You separated…

A: We know, Percentage yield = (actual yield/theoretical yield) * 100%

Q: 1.Determine the mass of sodium chloride required to prepare 400 ml of a Mueller-Hinton broth…

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Q: Chloroform liniment contains 30% (v/v) of chloroform. How many mL of chloroform liniment can be…

A: Chloroform liniment contains 30% (v/v) of chloroform. 1 lb = 454g

Q: Write a step-by-step procedure for this serial dilution. The stock concentration of the blue dye…

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Q: An environmental chemist working for the Environmental Protection Agency (EPA) was directed to…

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Q: Which of the following is used as a primary standard in the standardization of EDTA solution Caco3…

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Q: ▪ A pharmaceutical analyst needs to do quality control of a sodium furosemide solution. The max for…

A: Absorbance = Absorptivity coefficient × Concentration × Path length Path length = 1 cm Absorptivity…

Q: 3. A 0.5g mixture contains SiO2 , NaCI & NH.CL. After Sublimation 0.4 g left was dissolved to…

A: The percent composition of the mixture containing SiO2, NaCl and NH4Cl is to be calculated. Given:…

Q: You dissolve 14 g of gv03/2 in water and dilute to 750 mL. What is the molarity of this solution?…

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Q: Identify and explain the mistakes made in the following laboratory protocols:  A 1250 mg sample of…

A: Before measuring the mass of any chemical compound, it is quite necessary to adjust the balance to…

Q: 1-3: A stock solution of 70% v/v ethanol was diluted with distilled water to prepare 1L of 21% v/v…

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Q: 10. JY is a 58-year-old male hospitalized for a total knee replacement. He was given unfractionated…

A: The desired dose is 2 mcg/kg/min.

Q: The Ksp of Mg(OH)2 is 5.61 x 10-12, If you tried to dissolve 24.0 mg of Mg(OH)2 in 250 mL of wąter…

A: I think your question is incorrect. It should be ask the amount of dissolved solid according to…