50 mL of 15 mg/mL NaOH solution from 100 mg/mL NaOH

Q: Benzoic Acid Champi Sample Weight of sample 0.4997 g 0.4107 g Pressure in the container 3000 kPa…

A:

Q: Appropriate pippetor for measuring 10ul of liquid is:  200 1000 20

A: INTRODUCTION Pipette Pipette is a laboratory equipment used to transfer small quantities of liquid.

Q: Report how to make a 250.mL of 50pM sodium acetate and 0.01u EDTA using solid sodium acetate and…

A: Molarity (M) indicates the number of moles of substance per liter of solution (moles/Liter) and is…

Q: What volume of the saline solution must be administered to the patient in order to deliver 7.7 g of…

A: In 0.9% Normal saline there are 9 grams of NaCl is present in 1000ml or 1liter Here we have to find…

Q: To prepare 250 ml of a 1:2,500 solution a technician must weigh

A: Pharmaceutical preparations include different ingredients in a vehicle that leads to the formation…

Q: When calibrating a pH meter, 3 (three) standard color-coded buffer solutions are used, which of…

A: pH is a quantitative measure of how acidic or basic is the aqueous or other liquid solution is. It…

Q: How much 10% dextrose solution and 20% dextrose solution should be mixed to prepare 1 l  12.5%…

A: Dextrose is an intravenous solution made up of a mixture of water and dextrose and used in low blood…

Q: What volume of 10X TBE buffer should you use to make 100mL of 1X TBE buffer? 10mL 1mL 0.1mL 100mL

A: TBE buffer stands for Tris-Borate-EDTA buffer. It is used for both agarose and polyacrylamide gel…

Q: pH with 0 mL of pH with 5 mL of pH with 10 mL of Cola pH with 20 mL of Cola Buffer Cola Cola Buffer…

A: A good buffering system is one that do not allow the tremendous changes in the pH of the solution.…

Q: Calculate the amount of dextrose and sodium chloride in 750 mL of D5NS.

A: DSNS solution is Dextrose Sodium Chloride Solution. 5% Dextrose and 4.5% Sodium Chloride is normally…

Q: When mixing 40 mg of a medication in 100 ml total solution, the resulting strength is

A: A pharmaceutical medicine is a chemical substance that causes a biological or physiological effect…

Q: A vial containing 400 mg hydrocortisone sodium succinate powder for injection is to be reconstituted…

A: GIVEN: Amount of hydrocortisone sodium succinate powder for injection = 400 mg Volume of injection =…

Q: 8.5gm/250ml = (x)gm/630ml

A: The amount of chemical dissolved in the solvent = 8.5gm The volume of the solvent…

Q: How much of 9XTBE (in ml) and how much water (in L) do you need to prepare 2 L of 1XTBE? I need I…

A: Given, 9xTBE and water. We need, 2L of 1xTBE solution. We will use the formula, M1V1 = M2V2 M1 and…

Q: 75 g of impure sodium hydroxide is added to 250 cm3 of water. 10 cm3 of this impure solution is…

A: In order to find out the percentage purity of a compound, the molarity of the compound is…

Q: How many grams of sodium chloride are needed to make 0.60L of 2.3M sodium chloride solution

A: The concentration of a solution is expressed in molarity. Molarity is defined as the number of moles…

Q: Which of the following is the weakest acid? Select one: O a. pka=4.02 O b. pka=4.76 O c. pka=3.55 O…

A: The stronger the acid and the weaker the base will be, the bigger the value of Ka. The base will be…

Q: why is the cp of solids lower than that of liquids

A: Cp is the specific heat. Specific heat of a solid or liquid is the amount of heat that raises the…

Q: 100 mL of 2.5 X NaOH solution from 50X NaOH solution

A: Given Values: Stock solution concentration (NaOH) = 50 X Final Solution concentration (NaOH) = 2.5 X…

Q: The doctor ordered Ancef 225 mg IM every 8 hours.  You have on hand a 1 gram vial with the…

A: Ancef contains Cefazolin. Cefazolin is a first generation Cephalosporin antibiotic that is used to…

Q: THE LEAST EFFICIENT BUFFER MIXTURE a. 0.001 M HCI & 0.001 M NaCI b. 0.1 M NH4CI & 1M NH4CI c. 1 M…

A:

Q: Normal blood pH should fall between: O 7.35 and 7.45. O 7.15 and 7.25. 6.95 and 7.15. O 7.65 and…

A: pH It is the negative log of the hydrogen ion concentration pH= -log[H+]  pH is a unit of measure…

Q: uestion You had 10 ml of water in a graduated cylinder. After you placed a grape inside of the…

A: Osmosis is a process of simple diffusion where the molecules move through a semipermeable membrane…

Q: You need to prepare 1L of a 5×TE stock solution (1×TE buffer:10mM Tris,1mM EDTA).How much of Tris…

A: The mole is used as a unit in the SI system to quantify the amount of substance present. One mole is…

Q: 10% Neutral Buffered Formalin (NBF) Total volume & weight Component 1- 37-40% 1L 5L 10L 20L 100 ml…

A: Buffers are solutions that have the tendency to resist the change in the pH of any solution. They…

Q: How do you prepare 500 mL pH 6 Citric acid/Phosphate buffer in the laboratory. Please explain…

A: A buffer solution is a solution that only changes slightly when an acid or a base is added to it.

Q: 10 mL of 0.5 M CuSO₄ * 5H₂O solution from 10 M CuSO₄ * 5H₂O solution

A: CuSO₄ * 5H₂O solution is copper sulphate pentahydrate solution. The concentration of stock solution…

Q: Calculate the volume of TAE buffer that you will need to prepare a 100ml solution of 1X strength…

A: TAE buffer stands for Tris-acetate-EDTA buffer. It is used in lab to do electrophoresis of nucleic…

Q: U, was used. Write the ionization euation for thin

A: weak acid is an acid that partially dissociates into its ions in an aqueous solution or water. In…

Q: The amount of NaCl in 10 mL of 1/4NS is 22.5 (Do not write the number, write the abbreviated unit.)

A: mg

Q: The pH value is calculated mathematically as the Log of the .hydrogen ion (H+) concentration False…

A: The pH of a solution is used as an indicator of the hydrogen ion concentration of the solution. A…

Q: A KCC student titrated 100.00 mL of a NaOH solution using 55.00 mL of a 0.1000M H2SO4 solution. How…

A: The reaction of an acid with a base is called an acid-base reaction. It is also called a…

Q: 2 cups of water takès up the same amount of space as 1 cup of water mixed with 1 cup of rubbing…

A: The explanation for the above question is given below.

Q: To make 500ml of 1xBuffer, measure __ML of 20x stock and add _­__mL water to make the total volume…

A: To make a 500 ml of 1x buffer , measure 25 ml of 20x stock and add 475 mL of water to make a total…

Q: Mixing 50.0 mL of 0.200 M Na2HPO4 with 50.0 mL of 0.120 M HCI results in a buffer solution composed…

A: HCl is a strong acid. It is highly corrosive

Q: 1) Dilution fraction 2) Water

A: Dilution is a method to dilute the specific sample to achieve the required low concentration of the…

Q: Why should Erlenmeyer flasks hold not more than 60% of their capacity?

A: To conduct experiments and conduct research, laboratories need a variety of instruments and…

Q: 18. (15.2-8 mL) trypsin can be added to a 75 cm2 flask.

A: Trypsin is a digestive enzyme which help in protein break down in small intestine. It help to digest…

Q: Tris NaCl buffer is known as?

A: Tris (with HCl) has a slightly alkaline buffering capacity in the 7–9.2 range. The conjugate acid of…

Q: 9% dextrous solution (9 mg per 100 ml. of solution) is given

A: A. 1a. In order to calculate flow rate    of dextrose we have to use following formula 2.18 L = 2180…

Q: True or False: Solid water is more dense than Liquid water.

A: Solid water is less dense than liquid water because, when liquid water molecule freeze into solid…

Q: Report how to make a 250.mL of 50pM sodium acetate and 0.01p EDTA using solid sodium acetate and…

A: Given Values: The concentration of sodium acetate in the solution = 50 μM The volume of the solution…

Q: how many grams of sr(no2)2 are needed to make 200 ml of 0.300M solution of sr(no2)2

A: Molarity is defined as the number of moles dissolved per 1000 ml of solution.

Q: You have a solution that is 18.5% (v/v) methyl alcohol. If the bottle contains 2.70 L of solution,…

A: Given: v/v % of methyl alcohol solution =18.5 % The volume of the solution = 2.70 L To Calculate:…

Q: If a sukfuric acid solution is titrated with the above sodium hydroxide soultion, it reqires 45.20…

A: Acid-base titration: This is a standard procedure to measure the concentration of unknown acid/base…

Q: A buffer solution is 0.40 M in acetic acid and 0.38 M sodium acetate (Ka= 1.75X10). Calculate the…

A: Given Values: Ka value of acetic acid = 1.75×10-5 Concentration of acetic acid = 0.4 M Concentration…

Q: A 1–fluid ounce (29.573 mL) solution contains 4.5 grains (291.60 mg) of silver nitrate. How much…

A: Isotonicity of nasal fluid is similar to 7 % of sodium chloride, NaCl.7% of NaCl means 7 grams of…

Q: Desired Desired Initial Volume of Stock or Volume of Concentration Volume Concentration Previous…

A: In the question, we are given a table in which we know the desired concentration, desired volume and…

Q: Z( Electrode V (buffer) X (gel) Y. W Electrote

A: In electrophoresis, The DNA which is negatively charged, it moves from negative potential to…