How do you make a stock solution of 1000 ppm using a solution which Has a density of 0.842 g/mL?

Q: A 2.5mg/ml solution of ampicillin is available for use, what volume would youadd to 200ml of LB…

A: Microbiology is the branch of biology that deals with study of organisms that are too small to be…

Q: What is the pH of a 0.2 M solution of ammonium nitrate (NH4NO3)?

A: Ammonium nitrate is the salt of a weak base and a strong acid hence it is slightly acidic due to…

Q: A 500 mg vial of Kefzol needs to be reconstituted to a final concentration of 275 mg/mL. Assuming…

A: Answer.    Given data :----- Kefzol vial concentration  = 500 mg.  Desire concentration of kefzol =…

Q: How many ml 2M NaOH would it take to neutralize 20 ml of 0.5M HCI?

A: Given: Concentration of NaOH , M1 = 2 M Volume of NaOH, V1 =? Concentration of HCl, M2 = 0.5 M…

Q: The master formula for preparation of a ganciclovir solution is: Ganciclovir 500 mg injection vial 1…

A: Each vial contains 500 mg of ganciclovir. After 10 mL additions each of the vials gives 50 mg.

Q: How do you prepare a 100mL of 0.1 M phosphate buffer? From the anterior buffer, how do you make…

A: Introduction  When modest amounts of acid or base are given to a solution, the pH does not alter as…

Q: If a pharmacist needs to prepare a bacterial suspension with a concentration of 2.4x10^2 cfu using 1…

A: A colony-forming unit is the number of viable or alive cells in cell suspension that have the…

Q: How would you dilute 0.1 M boric acid in 1:10 ratio to 0.01M?

A: Given Values: Initial Conc. of boric acid = 0.1 M Final Conc. of boric acid = 0.01 M Dilution = 110…

Q: You record the absorbance of your unknown BSA sample at 0.276. What is the concentration in ug/mL of…

A: Standard curve can be used to determine the concentration of unknown sample by determining their…

Q: Below is a Beer's Law Plot for the concentration of a specific colored compound x. A solution of…

A: Beer Lambert's plot It's a graph showing a compound's absorbance vs. concentration. It is a straight…

Q: volumetric flask made of Pyrex glass is calibrated at 20 °C.It is filled to the 100 mL mark with 35…

A: Original volume is 100 mL. Delta T = 20 - 35 = -15°C After cooling to 20 °C, the volume is Vfinal=…

Q: Given an 8 M potassium chloride stock solution, explain whether it is possible to perform a dilution…

A: The dissolution of one mole of a compound or solute in a solution with a total volume of one litre…

Q: You have a 1000X stock solution of sodium chloride (NaCl). The concentration of NaCl in the stock…

A: Sodium chloride (NaCl) is a salt made of an equal composition of sodium and chloride ions. NaCl is…

Q: What volume of 50 ppm nitrate stock solution would you use to prepare 50 ml of 1ppm, 2 ppm, 3 ppm…

A: Perhaps the most typical task in any analytical lab is preparing a solution with a known…

Q: How will you dilute 100 μl of 25 mg/ml BSA into a final concentration of 2 mg/ml BSA?

A: BSA stands for bovine serum albumin. It has several applications in laboratories. In a microbial…

Q: How many grams of NaOH would you need to make 3,982 mL of a 3 M NAOH solution (m.w. = 40.00 g/mol)?…

A: By the concept of molarity, we can determine the concentration of a solution. It is the total number…

Q: A chemist is performing a precipitation titration on a 1.00 L sample containing an unknown…

A: Titration is the process, in which the exact concentration of the unknown solution can be used to…

Q: How many grams of NaOH would you need to make 7,252 mL of a 230 mM NaOH solution (m.w. = 40.00…

A: Answer- Here molarity of the solution is provided and requires the amount of weight of NaoH.

Q: You are asked to prepare 50 ml of a 1:100 rifampin (rifadin) and you have in stock a 1:20 rifampin…

A: Rifampin (Rifadin) is an antibiotic used to treat bacterial infections like leprosy, tuberculosis…

Q: 3 mL of a 45 mM stock solution of a substrate is added to 8 mL of water. Calculate the following…

A: Calculations for a substrate solution's dilution are related to the subject addressed above. A…

Q: You want 235mL of a solution that consists of 10% BSA, 2.37mM KCl and 120µM EDTA.  You have stock…

A: BSA is a globular proteins which is a well studied proteins and used as standard protein molecule in…

Q: If equal portions of tretinoin gel, 0.1 % w/w and 0.4 % w/w are combined, what would be the…

A: The objective of the question is to find the resultant percentage strength when equal portions of…

Q: How much magnesium chloride hexahydrate (MW = 203.3 g/mol) is required to make a 500 mL solution ata…

A: MW = 203.3 g/mol Concentration = 10 mmol/L Volume = 500 ml solution = 500/100 L = 0.5 L

Q: What is the pH of a 0.00550 M solution of HCl?

A: Strong acids completely disassociated into ions in solution but weak acids do not. The pH of the…

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: You need to make 20 mL of a 1/100 (10-2) dilution of a crystal violet solution? How much diluting…

A: Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline…

Q: To make 100 ml 0.3% NP-40 solution for FISH post washing, how many ul  100% NP-40 solution is…

A: Data given is, C1 = 100, C2 = 0.3, V2 = 100ML, V1 = ? C1= Initial concentration;            C2 =…

Q: 12 grams of glucose will make how many mL of a 0.5 g/mL solution?

A: Given Values: Weight of glucose = 12 g Concentration = 0.5 gml How much volume of water needs to…

Q: Using the formula V₁D₁ = V₂D2, what volume of a 1/100 (10-2) dilution would you need to produce 100…

A: Stock solutions refer to the high-concentration solutions used for dilution. A stock may have a…

Q: You have a stock solution of 40% hydrogen peroxide. You need to make several dilutions for a…

A: Dilution of Hydrogen peroxide (H2O2): Dilution of Hydrogen peroxide (H2O2), is carried out by adding…

Q: What mass in grams of dextrose and sodium chloride are required to prepare 250 mL of D10 NS…

A: Introduction: The term molar mass is defined as the mass of one mole of a substance. It is…

Q: How many mL of 13x stock solution would you need to make 387 mL of 1x PBS. Report your answer to 1…

A: Concentration of a solution can be changed by the changing the amount of solvent added. The…

Q: A sample of steel weighing 2.00 g is analyzed for Cr (AW 52.0). The Cr is oxidized into chromate…

A: In Baeyer's reagent, potassium permanganate is dissolved in an alkaline solution of violet color.…

Q: Determine the fluoride ion concentration for a saturated solution of magnesium fluoride. K sp = 7.4…

A:

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: Thimerosal Tincture USP contains 0.1% w/v thimerosal and 50% v/v ethyl alcohol. If the cap is left…

A: The objective of this question is to determine the concentration of thimerosal in the evaporated…

Q: If a liquid contains 3 mg of drug in 40 mL, what is the milligram percent of this solution? Round to…

A: Drug calculation is an essential component of drug administration. As Nurses we need to understand…

Q: What would be the working stock concentration (in molarity) if you diluted 250 uL of a stock…

A: Molarity is defined as the number of moles dissolves in 1000 ml of the solution.

Q: I have: DMEM:F12 800X ITS 1.07 g/ml Linoleic acid Nu-serum (pure solution) BSA (pure powder)…

A: Given: 800x ITS Stock solution of linoleic acid with a concentration of 1.07 g/mL Total final…

Q: What is the pH of a 5.9 × 10⁻⁶ M HBr solution?

A: Hydrobromic acid, HBr is  an extremely strong acid, one that ionizes completely ionizes completely…

Q: How many moles of KBr are there in 89.5 mL of 0.150 M KBr?

A: Molarity can be stated as, it is the number of moles of solute which is dissolved per liter (L) in…

Q: It takes 175ml of 0.75 M H2SO4   to completely neutralize 285 ml of NaOH.  What is the concentration…

A: Neutralization is a chemical reaction in which acid and a base react quantitatively with each other.

Q: What is the pH of a buffer solution that is 0.20 M proprionic acid (HC3H4O2) and 0.1 M sodium…

A: pH = 4.59Explanation:

Scientific Notation

We have to deal with quantities that are extremely large or very small. For example- I may have 6,500,000,000 red blood cells, or the diameter of an iron atom is 0.000000011 inches. Numbers with many zeros can be inexpedient to work with, so scientists use scientific notation. It represents very large numbers or very small numbers in a simple form. We know that whole numbers can be extended to infinity, but we cannot write such large numbers on paper. Numbers that present in millions of places after the decimal point need to be represented simply. Thus, it is difficult to represent a few numbers in their extended form. Therefore, we use scientific notation.