A 500 mL sample of a 0.100 M formate buffer, pH 3.75, is treated with 5 mL of 1.00 M KOH. What is the pH following this addition?

Q: How many moles of Na,SO4 are in 100.0 mL of a 0.2500 M solution ? The GFW is 142.07 g. O A. 0.0500…

A: 0.25 M Na2SO4 solution. Molarity = number of moles in 1L of solution So, 0.25 moles of Na2SO4 in 1 L…

Q: How much of a 10x buffer should be added to 900ml of water to make a 1x solution?

A: In this question, we are given with- 1. Concentration of stock solution= 10X 2. Required…

Q: How many moles of EDTA (C10H16N2O3) do you have in 785µl of a 74MM EDTA solution (Mr(C10H16N203) =…

A:

Q: A 100-mL buffer solution with pH of 4.80 is prepared as a stock solution. Using this stock buffer…

A: Hi! Thank you for the question. We are authorized to answer two subparts at a time, since you have…

Q: What is the Molarity of 10 grams of NaCl dissolved in 3L of solvent?

A: Molarity of the solution is equal to the number of moles of solute present in one liter of solution.…

Q: Sodium Citrate 5 g Tartar Emetic 0.015 g Cherry Syrup ad 120 mL Using a balance with a sensitivity…

A: Correct answer is 22.5 ml  Examplnation given with image in step 2

Q: What are the pH values for the following solutions? (a) 0.1 MHCl (b) 0.1 M NaOH (c) 0.05 M HCl (d)…

A: pH is the scale used to specify the acidity or basicity of an aqueous solution. It is the negative…

Q: A solution measuring pH 12 is _________ times __________ concentrated with H+ than a solution…

A: The term "pH" was first described by Danish biochemist Soren Peter Lauritz Sorensen. pH is defined…

Q: 50 mL of 5mM NaCl solution from 1 M NaCl solution

A: Dilution is the process by which we decrease the concentration of a solution. This process is vital…

Q: What is the approximate pH of a solution labeled 6 x 10-5 M HBr? * 4.2 O 4.5 5.8 O 9.8 O 8.2

A: pH is the measure of the strength of H+ ion or Hydronium ions in solution. pOH is…

Q: You have 150 g of dextrose available and you need to compound a 20% solution. If you use the entire…

A: When we describe a concentration as a percentage without specifying the type of formula, we imply…

Q: 4. 25.0 mL of an unknown acidic solution was titrated with 42.7 mL of a 0.15 M NaOH solution. What…

A:

Q: How many grams are in 1 mL for the following solution?   NS _________ this is the whole question

A: NS or Normal saline: It is nothing but a mixture of sodium chloride (NaCl) and water that is…

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: 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: What is the pH of a 0.0032 M solution of NaOH?

A: pH is a scale which is used to specify the acidity or basicity of an aqueous solution. The pH scale…

Q: If I have a 20ml stock solution of BSA with a BSA concentration of 0.2%. How can I make two other…

A: The concentration of the stock solution of BSA is 0.2%. Percent solution is the mass of solute…

Q: If a 1.20 L of strawberry wine is 10.5% alcohol by volume, how many ml of the solution is ethanol?

A: Wine is an alcoholic beverage produced from honey, fruits like grapes, pineapple, strawberry, etc.…

Q: What is the pH of a 6.7 × 10⁻⁶ M HBr solution?

A: Hydrobromic (HBr) acid is considered a strong acid, which means it gets completely dissolved into an…

Q: 20 mL solution is 2 M NaOH. If 0.5 M HCl is to be added to this solution, calculate the pH of the…

A: pH is the negative logarithm of hydrogen ion, used to measure the acidity and basicity of the…

Q: How many grams of copper sulfate would you need to make 5 L of a 7 M copper sulfate solution?

A: Molarity is defined as the moles of solute per litre of the solution. Hence, our target is to make…

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: you have an order to administer 100 mg of Ceclor to a patient you have a bottle of liquid suspension…

A: Performing drug dsage calculation is an essential skill in health care. Health-care professionals…

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: What is the ratio of TRIS/TRIS-H+ in a TRIS buffer at pH 8.7?

A: TRIS is tris aminomethane. It is an organic compound. It is mostly used as a component of buffer…

Q: What is the final volume of NaOH solution prepared from 100.0 mL of 0.500 M NaOH if you wanted the…

A: The solution is a homogenous mixture of two or more components mixed together. It has two…

Q: Given a BSA stock solution of 4mg/mL how would you prepare a 5 mL sample with a final concentration…

A: The following formula is used to find the volume required to prepare a 5 mL sample with a final…

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

A: Sodium hydroxide is an inorganic compound with the formula NaOH. It is an ionic compound consisting…

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: 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: If 10g of salt was mixed in 1L water. What percent solution will this be.

A: According to the question,Mass of solute = 10 grams = 10gVolume of water = 1L = 1000 mili Liters…

Q: given a stock solution of 10% dextrose, how would you make 5 mL of a 0.9% dextrose solution? find mL…

A: Given Values: The concentration of the stock solution of dextrose = 10% Concentration of the final…

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: An aqueous solution is 3.50 % by mass hydrochloric acid, HCl, and has a density of 1.02 g/mL. The…

A: Mole fraction is expressed in the terms of moles. It is can be calculated from the formula that is…

Q: Make a standard curve by using the values given in the table and determine the concentration of…

A: Bovine serum albumin or BSA is used for standard curve preparation because of its stability. The…

Q: f there is a stock solution of 2000 (ug/ml) , is it possible to use SERIAL DILUTION to generate the…

A: The stock solutions are the concentrated solutions which can be used to prepare the solutions of…

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: Assume that you have a stock solution of 10% SDS and you need to make 150 microliters of 0.5% SDS.…

A: Stock solution (SDS) = 10%Concentration of stock solution = 10g of SDS/ 100ml of water.Similarly,…

Q: You are asked to make a 5M solution of SO 2, how many grams do you need?

A: A solution is a homogenous mixture that is homogenous. It is made up of two substances or more…

Q: How many moles of HCl are there in 75.0 mL of 0.160 M HCl?

A: Molarity can be stated as the soluble moles of solute, which is dissolved per liter of solution.

Q: The pH of a solution containing 20 mL of 0.120 N NaOH and 35 mL of 0.120 N NaOH is 1.49. True or…

A: Given Values: 20 ml of 0.12 M NaOH and 35 ml of 0.12 M NaOH are mixed together. The pH of the mixed…

Q: what is the is the dilution factor when  you add 2 mL ssample of 8 mL diluent?

A: Dilution is a process of changing the concentration of the solution by addition of solvent, which is…

Q: alanine that would exist at the pH indicated below.

A:

Q: What is the pH of an aqueous solution with {H3O+} = 6x10-12

A: pH is logarithm of the reciprocal of the H+  or H3O+ ion concentration in a solution that is…

Q: What is the pH of the following buffer mixtures?                                            (a) 100…

A: Given values: (a) Volume of acetic acid = 100 ml Concentration of acetic acid = 1 M Volume of sodium…

Q: If 4 mL of  1 M NaOH is added to 100 mL buffer, would it still be a usable buffer according to the…

A: A buffer can be destroyed by adding either a strong acid or a strong base in a large amount. The…

Q: How many liters of a 7 M NaOH stock solution would you need to make 780 mL of a 153 mM NaOH…

A: Molarity is defined as the number of moles of solute present in a liter of solution.  Molarity =…

Q: Approximately how many fluid ounces of sterile water are needed to compound this solution?

A: It has been mentioned that the sterile water needed to prepare this solution is 100 ml. The question…

Q: What quality of zwitterions makes them desirable buffers?

A: A buffer is a solution that can withstand pH changes when acidic or basic components are added. It…