You have a micro tube containing 1mL of a solution with 4.3x10^4 cells/mL and you are to produce a solution that contains 43 cells/mL. The most accurate way to do this is to preform a series of 1:10 dilutions (add 1mL of stock solution to 9mL of water to achieve a factor of 10 dilution). How many of these dilutions must you preform to achieve the desired solution

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

A:

Q: to one of the followin

A: Cefuroxime is an antibiotic and is a type of second generation cephalosporin and used for treatment…

Q: You are doing HPLC analysis to determine the concentration of vanillin in an artificial vanilla…

A: The full form of HPLC is high pressure liquid chromatography or high performance liquid…

Q: A chemist needs to make 3 standard solutions of 10ppm, 50ppm, and 75ppm to read the chloride…

A: A stock solution with 1000 ppm of chloride, which has to be diluted into 10 ppm, 50 ppm and 75 ppm.

Q: How much water (in millilitres) would you need to make up a 600mM solution using 0.8g of CaCl2? The…

A:

Q: PART ONE: Preparation of FECNS Solution Prepare the two solutions in table 1 by accurately measuring…

A: In part 1, when 1 ml of 0.0020 M CNS- solution is added to the unused portion of solution 1 in the…

Q: How many milligrams of solute are there in 100 uL of a 50mM NaCl solution (MW 58.44 g/mole)? Show…

A: Mass of solute required to prepare 100 uL of a 50mM NaCl solution is given below

Q: What volume of the 6.00% (w/v) citric acid solution described above would be needed to provide 425…

A: 6.00 % (w/v) citric acid solution means 6 g citric acid is present in 100 ml of citric acid…

Q: The ingredients contained in grape Kool-Aid can be approximated as: water (H2O, density = 1.000…

A: Given: Volume of solution = 500 mL = 0.500 L                         (Since 1 L = 1000 mL) Mass of…

Q: How many mL of a 0.250 M KCI solution must be diluted to 1.000 L so that the diluted solution…

A: Concentration of KCl stock solution = 0.250 M 1 M KCl contains 1M of K+. So, Concentration of K+…

Q: The Ksp value for calcium sulfate [CaSO4] is 2.40 X 10-5 so if a professor made 1825 mL of a…

A: Ksp = [Ca2+][SO42-] if solubility is s mol/L then: Ksp = s2 Number of mol = Molarity x Volume in L…

Q: When mixing sodium chlorate solution (volume 1.0L, density 1.1614 g/ml, mass fraction 22%)  with…

A: A balanced reaction is one that contains equal number of atoms of each element in reactants and…

Q: Solubility data of 2 furoic acid are as the following 1.0g/26mL water at 15 degrees Celsius and…

A: Recrystallization is the method for purifying the impure component. The solubility of a compound…

Q: In a recrystallization of a mixture of adipic acid and salicylic acid, the melting point of crop G…

A: The equilibrium associated with the phase conversion of liquid to solid along with the liberation of…

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: 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: You are given a standard with a concentration of 10 ppm. You are to create 5 different samples, all…

A: Concentration of the standard = 10 ppmTotal volume of each sample = 100 mLWe have to solve the…

Q: ppm used for very dilute solution True False

A:

Q: You have a material that is 1550 cells/L in water and you want to dilute it in the following…

A: Stock solution, C1 = 1550 cells/L Tube 1 solution (diluted), C2 = 115×1550 cells/LVolume of solution…

Q: 1) 500 ml of .50 M NaC1 from 2.0 M original stock solution?   2) 2.0 L of .20M MgS04 from .50 M…

A:

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: 2. DECOLORIZATION Dissolve 1g of brown sugar in 15 ml. dist. Water in a small beaker and divide the…

A: "Since you have asked multiple questions, we will answer only first question for you. In order to…

Q: Explain in detail how you would make the solution from the previous question (50.00 mL a 300 ug/dL…

A: We have to prepare 50.00 mL of a 300 μg/dL solution from a 1500 μg/dL stock solution. So, here the…

Q: Part C A 53.5 mL sample of an 9.0 % (m/v) KBr solution is diluted with water so that the final…

A: Part C Solution. 53.5 ml of  9 % M/V KBr solution is diluted with to give final volume 231 ml.…

Q: During lab, a student used a Mohr pipet to add the following solutions into a 25 mL volumetric…

A: Solutions concentration get altered on dilution, but the solutes moles initially present remains…

Q: A liniment contains 15 % (v/v) of methyl salicylate. How many mL of the liniment can be made from 1…

A: This question can be solved by using the concept of dimensional analysis .  1 pint = 473 ml

Q: One half liter (500.0 mL) of 2.50 M HCl is mixed with 250.0 mL of 3.75 M HCl. Assuming the total…

A:

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: A 1 mL sample of glycogen was calculated to contain 35 µmol (micromole) glucose. To 1 mL of this…

A: Given, Volume of sample of glycogen = 1 mL Moles of glucose = 35 micromole HCl volume = 2mL…

Q: Some crushed ice was placed in a 400 mL beaker. Some of the ice was allowed to melt before the…

A: Given data :-

Q: 2 mL of thiamine, 0.2 mL of folic acid, and 10 mL of multivitamin infusion are mixed with 500 mL of…

A: Total volume of the solution after infusion = 500 mL + 10 mL + 2 mL + 0.2 mL = 512.2 mL  Target time…

Q: The ingredients contained in grape Kool-Aid can be approximated as: • water (H2O, density = 1.000…

A: Given: Volume of solution = 500 mL = 0.500 L                         (Since 1 L = 1000 mL) Mass of…

Q: Calculate the volume of concentrated (98% v.v) H2SO4 that you will need to prepare 250ml of an 5.4 M…

A: Given: Concentrated solution is 98% v/v Volume of diluted solution = 250 ml Molarity of diluted…

Q: What volume must 100.0 mL of 0.500 M sulfuric acid solution be diluted to prepare 0.200 M sulfuric…

A: Given : Initial volume = 100ml Initial molarity = 0.500M Final Molarity = 0.200M

Q: (v/v)%  =  10. mL ethanol   150 mL mouthwash   × 100% = 6.7 % (v/v) ethanol   how do I insert…

A: Interpretation: The given setup of the percent volume/volume is to be shown.

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

A:

Q: How large volume should be measured from a 37wt, 1.185 g/cm^3 density solution?

A:

Q: A student was given a stock aluminum(III) solution with a concentration of 5.000 parts per million…

A: According to the Beer-lamberts law, the absorbance of a solution depends directly on the solute…

Q: What volume (ml) of the stock solution is required to prepare 5 litres of the antiseptic to fulfil a…

A:

Q: A student, trying to standardize NBS solution using a standard Vitamin C solution (220 mg/L),…

A: Please find the below attachment.

Q: Solvent passes through a column in 3.0 min but the solute requires 9.0 min. What is the capacity…

A: Given: Time required by the solvent to pass through a column (tm)= 3 min. Time required by the…

Q: You have a 5.0 ml sample of a protein in 0.5M NaCl. You place the protein/salt sample inside…

A:

Q: The protocol for a given lab experiment specifies that you should prepare a diluted solution by…

A:

Q: What weight of mercury bichloride should be taken as sample, assuming 100% purity, so that 0.5 g og…

A: Weight is calculated as, (weight of sample * GF)/ Weight of analyte.

Q: A 1 mL microbial suspension comparable to 1 mL of 1.0 McFarland standard was subjected to a series…

A: Given: 1st step dilution- Concentration of initial solution = 1.0 McFarland standard  Volume of…

Q: Which of the following is the best option for transferring 20 mL of a solution?  Use a 20 mL Mohr…

A: Answer: Different type equipment made of glass are used in the chemical laboratory  known as…