volumetric flask is made to prepare a certain chemical concentration through dilution for example if there is no volumetric flasks how can you prepare 0.2N or acetic acid from 1 N acetic acid stock solution.
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A volumetric flask is made to prepare a certain chemical concentration through dilution for example if there is no volumetric flasks how can you prepare 0.2N or acetic acid from 1 N acetic acid stock solution.
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- You want to prepare a 15 mL gel containing 0.8% (weight /volume) agarose. How much agarosedo you need to weigh to prepare the solution? Show all your calculations.Hint: Write down the units for 0.8% knowing that agarose is a powder that is mixed with aliquidI want to make a buffer solution containing 1 M glycene pH = 10 (Na+), 1 mM ZnCl2 , 1 mM MgCl2. I have the stock solutions 1 M glycene, 1 M MgCl2, 1 M ZnCl2, and 10 M NaOH. My final volume of buffer solution needs to be 250ml. how much (in ml) of each solution should i put into my buffer?You are told to prepare 200 mL of fixative solution containing 30% formaldehyde (vol/vol), 1X glycerol and 2.5 mM sodium chloride (NaCl). You find a stock of 100% pure formaldehyde (liquid), a 10X glycerol stock (liquid), plenty of water and a stock solution of 5M NaCl. There are also all kinds of pipettes, cylinders and beakers to measure volumes. How can the fixative solution be made (describe the process, include calculation concepts)?
- Describe how you would prepare a 500 ml of 0.35M Glycine pH2.2 from a 5M Glycine solution of pH 7. Show your calculations.From a 50% solution of dextrose, make 500 ml of a 5% solutionYou own a compounding able pharmacy and are presented with a presciption for fortified gentamicin eye drops 5mg/mL. You have in stock a gentamicin injection at 40mg/ml and 5ml gentamicin eye drop labled to contain 3mg/ml. How many mililiters of the injection should be added to the 5ml of the commercial eye drop to gice it a 5mg/ml "fortifited" concentration?
- If 10g of salt was mixed in 1L water. What percent solution will this be.You have a 62% dextrose solution. How many mL will give you 35 g of dextrose?80.00 mL of 0.350 M benzoic acid (K = 6.4×105) is titrated by 0.350 M NaOH. Calculate the pH of the acid solution before any titrant is added. PH Calculate the pH after 58.9 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH = Calculate the pH after 80.00 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic ad pH = Calculate the pH after 110 mL of 0.350 M NaOH is added to 80.00 mL of 0.350 M benzoic acid. pH=
- You need to prepare an acetate buffer of pH 5.43 from a 0.621 M acetic acid solution and a 2.95 M KOH solution. If you have 730 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.43? The pKa of acetic acid is 4.76. Be sure to use appropriate significant figures.How would I calculate the amount of each component in each solution? Stock solutions provided: 0.5 M EDTA, pH 8 10% bromophenol blue 10% xylene cyanol Sucrose powder Tris powder Glacial acetic acid Solution A: 50 mL of 50x Tris Acetate EDTA (TAE) Buffer 2M Tris Base 50mM EDTA, pH 8 11.4% (v/v) glacial acetic acid Solution B: 1L of 1x TAE Buffer 40mM Tris-acetate 1mM EDTA Solution C: 5mL of 10x Loading Dye 0.25% (w/v) bromophenol blue 0.25% (w/v) xylene cyanol 66.5% (w/v) sucrose 100mM EDTA, pH 8