b. How would a student prepare 25.0 mL of 40.0% standard solution from a 100.0 % stock solution. What is the volume of stock solution needed? a. 10ml b. 20ml c. 25ml d. 15ml Please show work

Q: 100.0 mL of a 0.500 M solution of KBr is diluted to 500.0 mL. What is the new concentration of the…

A: The given problem relates to stock dilution, so we can use the below relation to calculate the final…

Q: A DoD device is charged with a 1.0 molar solution of ibuprofen (the API) in n-hexane. The molecular…

A: Given: Volume of solution required for man = 2.803 mL = 2.803 cm3                        (Since 1 mL…

Q: What volume (in mL) of 0.0887 M MgF2 solution is needed to make 275.0 mL of 0.0224 M MgF2 solution?

A: We are known with Molarity equation as- M1V1 = M2V2 here, M1 will be 0.0887M and V1  has to…

Q: Using Dimensional Analysis show all work to calculate the mass of a solution prepared from 100 mL DI…

A: Mass of solution = mass of water + mass of NaCl

Q: How many microliters of a 904.0 ppm Co2+904.0 ppm Co2+ stock solution are required to prepare 20.00…

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Q: A 5.04 g sample of a solid containing Ni is dissolved in 20.0 mL water. A 5.00 mL aliquot of this…

A: concentration of Ni in 20mL = 5.53ppm x dilution factor…

Q: Percent by Mass mass of solute_ × 100 mass of solution Percent by mass equals the mass of the solute…

A: Given : Mass of solute i.e DTN = 25 mg And mass of solution = 1000.0 mg

Q: experiment calls for making 400.0mL of a 1.1 M NaNO3 solution. What mass of NaNO3 (in grams) is…

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Q: 7. Compute for the % mass or weight salt solution by mixing 622g of NaCl with 1.86 liters of H20.…

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Q: as 25.1 mM (millimolar) solution was made using 0.267 L of a 321 mM solution. what is the final…

A: • The values provided in the question are:-  i) Initial concentration of a solution, M1 = 321 mM ii)…

Q: For an experiment 33.5mL solution of potassium permanganate with a 1.45 M concentration is needed.…

A:

Q: What volume of Water for Injection, BP is to be added to a vial containing 500 mg amoxicillin to…

A: Given that : The mass of vial containing amoxicillin = 500 mg The volume of final solution = 10 mL…

Q: 10.0 mL of a 0.300 M sucrose solution was diluted to 200. mL. The concentration of the new solution…

A: Concentration of the new solution can be determined using the dilution expression,

Q: How many mL of 15.1 micromolar stock solution are needed to make 50.0 mL of 6.04 micromolar…

A: Consider the given information is as follows; Concentration of stock solution M1=15.1 μM Volume of…

Q: What is 2.7 x 10^-3 grams of lead (Pb) per gram of solution?a. 2.7 ppmb. 2700 ppbc. 2700 ppmd. 2.7…

A: ppm is parts per millionppb is parts per billion

Q: A sample of 14000 ppm iron is Strong Acid has to be diluted between 95 and 180  ppm.  The method…

A: One gram in one liter is 1000 ppm.  1g1000 = 0.001g in 1 L  = 1 ppm1 ppm = 1 mg/L

Q: A 12.0-mL portion of 3.00 M stock solution is to be diluted to 0.200 M. What will be the final…

A:

Q: Refill the burette with the standardized 0.5 M NaOH solution provided. Record the initial volume of…

A: Moles of NaOH required = Moles of vinegar (acetic acid) neutralized

Q: A 5 gram (NH4)2SO4 (MW = 132.14 g/mol) was dissolved to make 500mL solution. It found to have a…

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Q: 325 mL of 0.25% (w/v) KCl  solution I would weigh out _____  g KCl and add water to dissolve, then…

A: SOLUTION: Step 1: (w/v) % of the KCl solution is 0.25%. The total volume of the solution is 325 mL.…

Q: How many grams of AgNO3 should be used to prepare 250 mL of 0.600M AgNO3 solution?

A:

Q: 4.How many grams of CaCl2 would be required to create a 4.1 % of a 2122g solution? Numerical…

A: Mass of solution = 2122 g

Q: 2. If you perform a dilution ofa 5X solution to 100 ml of a 0.5X solution, how would you determine…

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Q: 390 mL of a 1.19 M NAOH solution is diluted to a final volume of 856 mL. Calculate the new…

A: To calculate the final volume if 390 mL of a 1.19 M NaOH solution is diluted to a final volume of…

Q: use this virtual lab. i. Place a bottle of 0.1 M NaCl solution, the unknown AgNO, solution, a 250 mL…

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Q: Which is not required in recrystallization? a. solution is filtered at high temperature b.…

A: Remember this point, recrystallization is used for purify the crude sample of compound so that all…

Q: How many mL of a 5.00 ppb solution are needed to have 1.00 g ? The concentration will always be the…

A: Ppb  or part per billion is one of the ways to express the concentration of solution

Q: Concentration of 7.5 mL Dilution (Use M,V1=M2V2 where M1 = 0.024, V1 = 7.5 mL (why?), V2 = 100 mL)…

A: Consider the given information is as follows; M1 = 0.024              ;                     V1 = 7.5…

Q: 7. How many milliliters of 13.1 M H,SO, are needed to la. 0.22 mL prepare 600.0 mL of 0.10 M H,SO,?…

A: Given: Initial concentration of H2SO4 = 13.1 M Final concentration of H2SO4 = 0.10 M Final volume of…

Q: IMNACI solution using an available 2.86 M solution? ODilute 23.9 mL of the 2.86 Msolution to a final…

A: solution - from the dilution law; M1×V1 = M2×V2Where ;M1 = initial cincentration = 2.86 mol/LV1 =…

Q: 100 mL of a 12- % solution has been prepared. a. How many grams of medication is in the 12-%…

A: Percentage strength of a solution is expressed by the amount of solute present in 100 mL of a…

Q: c. Quantitatively transferring dissolved solids from a beaker by pouring washings into the final…

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Q: a report with the aim to standardize a solution

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Q: Dilutions From a 2.0 M Stock Solution 39 SEP Interpret Data The table shows the volume (Vstock) of a…

A: M1 = 2.0 M V1  =  ?  M2 = 0.5 M      ( mol/L  = M ) V2 =  1 L    M1 × V1  = M2 × V2 2.0 M × V1  =…

Q: How many mL solution should be taken from 0.900 M K2SO4 solution to prepare 250 mL of 0.450 M K2SO4…

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Q: Using M1V1=M2V2 Make 100ml of a solution that contains 0.5mM MgCI2, 15 mM CaCI2 and 120 mM KCI 0.5M…

A: Dilution is the solution prepared by adding the solvent to the stock solution (more concentrated…

Q: How many milliliters of 0.05 M solution (Ca (NO3) should be mixed with pure water to obtain 500 g of…

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Q: 4 grams of  Na2CO3 (MW = 105.99 g/mol) was dissolved to make 300 mL solution. It was found to have a…

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Q: Benzylkonium chloride solution 600 ml. make a solution such that 25 ml diluted to a liter equal to…

A: Here, ratio = 1:3000 % of solution = 12%

Q: Find the volume of the 5.5% m/v stock solution if it will be diluted to 80mL 4.8% m/ v Diluted…

A: Given : We have to find volume .

Q: o NB3: What is the dilution factor of the 50 mM stock solution relative to the 1 mM solution?…

A: The dilution factor can be determined by the ratio between initial concentration to the final…

Q: A stock solution of 10.64M glucose needs to be brought to 0.8M and 470mL created.  What volume in mL…

A: Given: Final volume of solution = 470 mL Final concentration of glucose = 0.8 M And concentration of…

Q: Calculate the volume needed to be removed from a 4.00 M stock solution to make 250.00 mL 0.350 M…

A: Given : Molarity = 4 M Final volume = 250 ml Final molarity = 0.350M

Q: A lab requires 200.0 mL of 0.352 M H2SO4. The only solution available is 9.55 M H2SO4. (a) How many…

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Q: How would you make a 1 mL 0.8% Tween-20 solution in PBS from a 10% stock solution?

A: Tween-20 is polysorbate 20 with molecular formula C58H114O26 Its molecular weight is 1226g/mol…

Q: What is the concentration of chloride in a solution made with 0.5081 grams of Calcium chloride and…

A: Amt of Calcium chloride = 0.5081 g Amt of Water = 250.0 ml MM of Ca = 40.07  MM of Cl = 35.44  MM of…

Q: 150 mCi of D2O is injected in your patient. 10% of D2O is excreted. The concentration of D2O in a…

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Q: Experimental Design: Consider a group that must make 2M NaCl in a total volume of 100 mL water using…

A: Given: 2M NaCl solution The volume of the water=100 ml=0.1 L To find: Steps to prepare 2 M solution

Q: What volume of a 4.00 × 10-4 M FeSCN2+ solution would be needed to prepare 50.0 mL of a 7.20 × 10-5…

A: Here, we have to find the volume of a 4.00×10-4 M FeSCN2+ solution that would be required to prepare…