Problem: Prepare 100. mL of a 5.23 x 104 M HCI (aq) solution. You have a 0.0155 M HCI (aq) stock solution. Determin...
You need to prepare an acetate buffer of pH 5.23 from a 0.815 M acetic acid solution and a 2.26 M KOH solution. If you have 680 mL of the acetic acid solution, how many milliliters of the KOH solution do you need to add to make a buffer of pH 5.23? The p?apKa of acetic acid is 4.76.
You want to prepare 50 mL of a 20% NaCl salt solution from a 100% stock. Calculate the amount of stock as well as the amount of water you need to use to make this dilution. Assume that you have unlimited volume of the stock.
You wish to prepare 100 mL (total volume) of a buffer solution that is 0.025 M in carbonic acid, pH 7.25. You have solid H2CO3 and solid NaHCO3. Calculate how many grams of H2CO3 and HCO3- you need to weigh out to prepare this solution.
You need to prepare 270 ml of 0.51 M HCl. You have a 11.3 M stock solution of hydrochloric acid. How many mL of the stock solution will you need?
How would you prepare 40.0 mL of 0.800 M HNO3 from a stock solution of 4.00 M HNO3? What volume (in mL) of the 4.00 M HNO3 solution will you need? ?mL
Question 1 20 pts Please prepare 20 mL of 0.2 M NaOH, given a stock solution of 0.6 M NaOH. State the precise amount of the 0.6 M NaOH used and the amount of diluent (H2O) added Question 2 20 pts Please prepare 500 mL of a 1/100 dilution of serum from a tube with a 1/10O dilution of serum. Please state the volume of the 1/10 dilution of serum used and the volume of diluents (H2O) used 20 pts...
You are provided with a stock solution with a concentration of 1.0x10-5 M. You will be using this to make two standard solutions via serial dilution. 1. Perform calculations to determine the volume of the 1.0x10-5 M stock solution needed to prepare 10.0 mL of a 2.0x10-6 M solution. Perform calculations to determine the volume of the 2.0x10-6 M solution needed to prepare 10.0 mL of a 5.0x10-7 M solution. You are welcome to do the calculations in your notebook...
You need to prepare 200 mL of a 0.4 M solution of ammonium hydroxide (NH4OH) You have 80 mL of a 0.5 M NHOH solution and 40 mL of a 7.5% (w/v) NH4OH solution. What volume of 7.5% NHOH and water needs to be added to the 80 mL of 0.5 M NH4OH solution to make up 200 mL of 0.4 M NH4OH? Molar mass of NH4OH 35.04 g/mol % (weight / volume) means mass (in g) in volume (100...
How much volume in mL will you need to take from 4.3 M concentrated stock solution if you would like to prepare a diluted 0.6 solution with 100 mL?
Perform calculations to determine the volume of the 1.0x10-5 M stock solution needed to prepare 10.0 mL of a 2.0x10-6 M solution. Perform calculations to determine the volume of the 2.0x10-6 M solution needed to prepare 10.0 mL of a 5.0x10-7 M solution.