A series of dilute NaCl solutions is prepared, starting with an initial stock solution of 0.100 M NaCl. Solution A is prepared by pipeting 10 mL of the stock solution into a 250-mL volumetric flask and diluting to volume. Solution B is prepared by pipeting 25 mL of solution A

Q: The level of mercury in a stream was suspected to be above the minimum considered safe (1 part per…

A: The mass and moles of mercury are calculated as,

Q: 400.0 mL of a 0.455 M solution of NaCl is diluted to 900.0 mL. What is the new concentration of the…

A: Given, 400.0 mL of a 0.455 M solution of NaCl is diluted to 900.0 mLwe are asked to calculate the…

Q: 565 mL of water was added to 40.0 mL of 0.550 M MgCI, solution. Assume the volumes are additive.…

A: • The values provided in the question are:-       i) Initial concentration of MgCl2 solution, M1 =…

Q: For each of the following solutions, calculate the normality

A: 1) For acids:  N = M × Basicity  Where basicity is no.of  replaceable H+ ions by an acid  2) For…

Q: 100.0 mL of 2.500 M KBr solution is on hand. You need 0.5500 M. How much water should be added to…

A: The objective of this question is to find out how much water should be added to a 2.500 M KBr…

Q: 8.49 mL of 4.00 M acetone is combined with 10.0 mL of 1.00 M HCl, 15.0 mL of 0.00500 M I2 and 7.95…

A: Molarity of a solution is defined as number of moles of solute dissolved per litre of the solution.…

Q: How many millimeters of 11.5 M HCI (aq) are needed to prepare 195.0 mL of 1.00 HCI (aq)?  V= ? mL

A: ** Note :- Molarity of HCl is 1.00 M   final volume of HCl= 195 mL final concentration of HCl = 1.00…

Q: What volume of 8.50 M NaCl solution needs to be diluted to produce 400.0 mL of 2.00 M NaCl solution?

A: In case of dilution of any electrolyte, the following relation is used : MiVi = MfVf

Q: What volume (in ml)  of a 12.00M stock solution of HCl is required to prepare 500.00ml of a 3.65…

A: The mass of HCl standard = Density × Volume The mass of HCl standard = 3.65 × 10-3 g/mL × 500 mL =…

Q: 0.05 g of acetyl salicylic acid has been dissolved to the volume 25.00 ml to create a stock…

A:

Q: A 25 ml aliquot of a 2.00 M stock solution is placed in a 300. mL volumetric flask. When it is…

A: Given that, M1=2.00M , V1=25 mL M2=? , V2=300mL

Q: 254 mL of a 0.200 M HNO3 solution from a 3.60 M HNO3 solution.

A: Initial molarity of HNO3 = M1 = 3.60 M   Molarity of HNO3 after Dilution = M2 = 0.200 M Final volume…

Q: To prepare a solution of 48.9 mM sucrose, a student combines 43.0 mL of a sucrose stock solution…

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

Q: A solution was prepared by mixing 60.00 mL of 0.100 M HNO3 and 130.00 mL of 0.200 M HN03. Calculate…

A:

Q: Describe how you would prepare 100mL of 0.02 M NaCl solution from a stock of 4.0 M NaCl.  Make sure…

A:

Q: When 300.mL of acid was diluted to 600mL of the acid a 1.25mL solution of the acid was produced.…

A: When 300.mL of acid was diluted to 600mL of the acid a 1.25 M solution of the acid was produced.…

Q: At your next lab assignment, you are instructed to prepare 250 mL of 0.500 mol/L HCl by dilution of…

A:

Q: A 2.5L sample of 6.1 M NaCl solution is diluted to 75L.  What is the molarity of the diluted…

A: During dilution, number of moles of substance remains same.  Dilution equation can be given as:…

Q: the concentration of the Sodium hydroxide solution.

A:

Q: 50.00 mL of a 0.1001 M solution of HNO3 was prepared by diluting 8.00 mL of a stock solution.…

A:

Q: The stock solution of 13.60 M NH4OH is used to make 500.00 mL of a 0.001000 M solution. How many mL…

A:

Q: A 1.00 M solution has an initial volume of 100. mL. Water is evaporated from this solution, and the…

A: Since initially we have moles of solute = molarity X volume of solution in L = 1 X 100 / 1000 = 0.1…

Q: You dilute 6.50mL of a 0.987 M solution to a final volume of 50.00mL. Then, you take 25.00 mL of…

A:

Q: There is a 12 M aqueous HCl solution in the stock room, but a 1.0 M solution is required for an…

A: Given, a 12 M aqueous HCl solution in the stock.we are askesd to calculate the volume of stock…

Q: Calculate the concentration of this diluted solution

A:

Q: A 54.0 mL aliquot of a 1.50 M solution is diluted to a total volume of 278 mL. A 139 mL portion of…

A: The answer to the following question can be written as:

Q: A solution is prepared by taking 7 ml of 5.9 M HCl and diluting it to 113 ml. Then 15 ml of that…

A: Given that,     Volume of initial 5.9M HCl = 7ml

Q: A 373-mL sample of a 0.481-M CaCl2 solution is left on a hot plate overnight; the following morning,…

A: The objective of this question is to find out the volume of water that evaporated from the CaCl2…

Q: If 52.00 ml of 0.500 M CaBr 2 solution is added to  128 ml of 0.320 M solution of KCl solution, what…

A:

Q: 2 mL of 15.4 M stock solution of HCl is mixed with water to make a 100 mL solution.

A: 1 M HCl solution means 1 mole HCl is present in 1000 mL solution  So, 1000 mL 15.4 M HCl solution…

Q: 21. What volume of stock solution is needed to prepare 100.00 mL of 0.125 M solution from 2.50 M…

A:

Q: Water is added to 135ml of a 2.45M KOH solution to give a final volume of 285 mL.What is the final…

A: Water is added to 135 ml of a 2.45M KOH solution to give a final volume of 285 mL. The final…

Q: A 0.430 M solution of KCl needs to be prepared through dilution. A 2.00 M stock solution will be…

A: To calculate the volume of the 2.00 M stock solution needed to prepare a 0.430 M solution of KCl,…

Q: A solution is made by mixing 13.85 mL of 4.00 M acetone, 23.32 mL of 1.00 M HCl, 10.00 mL of 0.0500…

A: Number of moles of acetone present initially = molarity x volume (L) = 4 M x 0.01385 L = 0.0554 mole…

Q: Describe how you would make a 500.0ml sample of 2.00 M KBr solution. You have access to solid KBr, a…

A:

Q: 44.0 mL of water was added to 100.0 mL of 0.250 M CaCl₂ solution. Assume the volumes are additive.…

A: The objective of this question is to find the concentration of CaCl2 in the diluted solution after…

Q: A 0.500 M solution of KCl needs to be prepared through dilution. A 2.00 M stock solution will be…

A: Answer:To dilute a stock solution we add the calculated quantity of water in it gradually and upon…

Q: series of iron standard solutions need to be made from a 40 ppm iron stock solution provided. For…

A: As we know , Moles the solute remains same on dilution but volume of the solution increases.…