prepare 100 mL of a solution that is both 25mM tris and 150 mM NaCl using a 1M tris stock and a 5M NaCl stock

Q: How many milliliters of 2.5 M sulfuric acid are needed to make 100.0 mL of 0.40 M H 2SO 4?     16.0…

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Q: What volume of aztreonam (50 mg/ml) must be added to 500 ml of Mueller-Hinton broth to yield a…

A: Formula used: C1V1=C2V2

Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 10 mL Mohr…

A: Correct option C

Q: When using a 50 mL volumetric flask, approximately what volume of solution should be used for each…

A: It is asked about the volume of solution used in volumetric flask to rinse .

Q: A 50.0 mL sample of 0.436 M NHANO3 is diluted with water to a total volume of 250.0 mL. What is the…

A:

Q: This is a picture of a 50-mL buret. The value for 'x' says 38 mL and the value for 'y' says a value…

A: An apparatus used in chemical laboratories to determine the volume of solution is called a…

Q: which of the following statements regarding purification by recrystallization is false? i.…

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

Q: What volume of 0.7777 M HNO3 is needed in order to produce 200 mL of 0.1550 M HNO3?   12.24 mL…

A: Given data - - > M1 = 0.7777 M V1 =? M2 = 0.1550 M V2 = 200 ml We know that from the formula M1V1…

Q: 0.49850 g of CaCO3 (100.0869 g/mol) is dissolved in HCl solution and diluted to 500 mL. A 25 mL…

A: Given, mass of CaCO3 = 0.49850 g volume of solution = 500 mL Volume of tap water = 100 mL EDTA…

Q: khölogy product pegfilgrastim (NEULASTA) contains the following in 0.6 mL pre-filled syringes 6.…

A: Amount in 0.6 mL syringe  Pegfilgrastin = 6 mg Polysorbate = 0.02 mg Amount of the following…

Q: mg Cefuroxime Sodium Powder for Injection with 6mL of sterile water for injection. The reconstituted…

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

Q: diffrentiate between oil in water emulsion and water in oil emulsion.

A: Dispersed phase and dispersion medium are liquids in the colloidal systems. Such liquid systems are…

Q: A commercial mouthwash contains 3.4g ethonal and 0.013g of antiseptic in each 47 ml portion.…

A: Answer:- This question is answered by using the simple concept of calculation of weight/volume…

Q: What is the molarity of an unknown HCl solution with a specific gravity of 1.10 and an assay…

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Q: In an experiment, 97.0 % from 1.00 g of solute X was extracted from 50.0 mL of an aqueous phase…

A: Solute X present in organic solvent = 1g × 97100= 0.97 g Volume of organic solvent = 50mL  So,…

Q: A commercial mouthwash contains 4.5 g of ethanol and 0.022g antiseptic in each 30.-mL portion.…

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Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 5ml…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: D) Mixing 5 mL of 1 M HNO3 with 10 mL of 1 M NaHCO3

A: Given buffer solution is acidic buffer. And acidic buffer solution is solution of weak acid and its…

Q: Calculate the water content of antibiotic powder weighing 350 mg. The water equivalent factor is 4.6…

A: The % of water content in the drug is determined by the formula is shown below. The antibiotic drug…

Q: Ksp of Cd(IO₃)₂ (462.22 g/mol) is 2.3 × 10⁻⁸. How much dissolved Cd(IO₃)₂ is in a 750.0 mL Cd(IO₃)₂…

A: Given,  The Ksp of Cd(IO₃)₂ (462.22 g/mol) is 2.3 × 10⁻⁸. The mass of Cd(IO3)2 in 750.0 mL of…

Q: A student needs 50.0 mL of 4.08×10 -4 M FD&C Yellow Dye No. 6 solution. If the student has 2.00 mM…

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Q: Find the ksp of PbCl2  5.0 g od pbcl2 100ml of h2o

A: GIVEN DATA: given mass of  PbCl2: 5gm Molar mass of PbCl2 is 278.1gmol-1 water = 100ml

Q: How many milliliters of 2.0 M sulfuric acid are needed to make 400.0 mL of 0.30 M H 2SO 4?     38.3…

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Q: B. 500 ml of 0.1N FeSO4.(NH4)2SO4.6H2O Solution: 1. Pulverize about 20 grams of ferrous ammonium…

A: No of moles = Mass / Molar Mass Molarity = No of moles / Volume (L)

Q: What volume of 2 M Tris-HCl, pH 8.0 (in microliters) will you need in order to make 10 mL of 10 mM…

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Q: Identify the risks associated with a hand painted tote bag

A: Tote bag s have many  logos or graphics printed on them .which consists of synthetic plastic polymer…

Q: Calculate the molar concentration of the nitric acid if you know that specific gravity is 1.42 and…

A: Given,  Specific gravity = 1.42 ,  Solution concentration = 0.4 M volume of water = 100 ml

Q: If 250 mL of a 12% solution is diluted to 1 L, what will be the percentage strength?   a 1.2%   b…

A: Dilution of the solution: When we dilute a concentrated solution with pure water, the amount of…

Q: Describe how to create a 3.0 mL sample with concentration of 1.5 x 10-4 M from a starting stock…

A: Dilution Dilution process is the process to change (decrease) the concentration of solution in…

Q: A solution of FESCN2+ has a concentration of 1.00 x 10-4M and an absorbance of 0.755. What is the…

A: Given, A1 = 0.755 A2 = 0.491 C1 = 1 X 10-2 C2 = ? To calculate C2.

Q: Iron(III) chloride-thiocyanate system 1. Prepare a stock solution by adding 2 mL 0. 1 M FeCl̟ and 2…

A: A question based on equilibrium concept that is to be accomplished.

Q: After you collect a fraction from the column, how do you remove the solvent to get the pure…

A: Solid crude compound purify by column chromatography. Crude contains two or more compound. Column…

Q: How many milliliters of a 1:50 w/v boric acid solution can be prepared from 500 mL of a 12% w/v…

A: We have to predict the volume of Solution

Q: Professor Forni has hired you as a research assistant and you need to make an X-gal staining…

A: Required concentration of MgCl2 = 2mM                                                       = 0.002…

Q: Which of the following is the best option for transferring 20 mL of a solution? A Use a 5mL…

A: The transfer of liquids and solution uses various types of apparatus and instruments depending on…

Q: What volume of CHCl3 is needed to decrease the concentration of compound X to 1.00 x10-4 M if it is…

A: (a) Here, we have to find out the final volume of CHCl3 when it is mixed with 25 ml of 0.0500 M…

Q: Tonic water (20.0 mL) was added into each of two volumetric flasks (100 mL). The first flask was…

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Q: How many mL of 3.50 M H2SO4 solution is needed to prepare 250 mL of 1.25 M H2SO4 solution?    a)…

A: During dilution number of moles remains constant and volume is calculated using equation of…

Q: 10- 0.02 g of AGNO3 in 100 ml of water express the concentration in ppm ? 20ppm 200ppm

A: Given values-> Weight of AgNO3= 0.02 gm Volume of water = 100 ml

Q: Upon adding 400 mL of 1.0 M HI to 400 mL of 1.0 M C5H5N

A: This is the acid base reaction .

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: A 1x working solution contains 50mM of EDTA. What is the EDTA concentration in your 91x concentrated…

A: Given: 1x working solution contains 50mM of EDTA.

Q: 100 mL of 2.00 µg/mL of Cu from 1000 PPM Cu Standard Solution.

A: The explanation is given below-

Q: Which statement is true? Statement 1: In chromatography, the compound mixture moves along with the…

A: Chromatography is the separation method , in which components present in mixture can be separated by…

Q: A student needs 25.0 mL of 7.18x10 4 M FD&C Blue Dye No. 2 solution. If the student has 2.00 mM FD&C…

A: We will solve this question using molarity equation.

Q: Three labs were contracted to measure the concentration of a 5.50 ppm Ca2+ standard solution. They…

A: For the problem we have to find out which lab measurements is most accurate result and which one has…

Q: What volume of 0.200 M K2C204 is required to react completely with 30.0 mL of 0.100 M Fe(NO3)3?…

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Q: A 500.00 mg vitamin C (MW176.12g/mol) tablet was ground, acidified, and dissolved in H2C to make a…

A: Solution: We know the Iodometric titration, Since iodine is used as oxidizing agent. So in the case…

Q: How many milliliters of 18.2 M H2SO4 are needed to prepare 600.0 mL of 0.10 M H2SO4?

A:

Q: A tea bag containing 15 grams of tea leaves with 0.7% of caffeine was used in solid-liquid…

A: