What is the mass of NaCl needed to prepare 250 mL of a 0.60 M NaCl solution?
What is the mass of NaCl needed to prepare 250 mL of a 0.60 M NaCl...
19. a. What mass of potassium bromide is needed to prepare a 250. mL of a 2.00 M KBr aqueous solution? Molar mass of KBr = 119.00 g/mol. Use dimensional analysis to calculate the mass. b. Describe the full process of how you would prepare this solution in a 250. mL volumetric flask. c. Calculate the concentration of the solution in question a. if more water was added to bring the solution to a final volume of 1000. mL. (Hint:...
MW molewo one expand 4. a) Calculate the mass of NaCl needed to prepare 35.0 mL of a 0.90% w/v Naci solution b) Calculate the mass of NaCl needed to prepare 35.0 mL of a 20.0 % wly NaCl solution. c) Describe how you would make the solution for 4a. Be brief, but quantitative, in your answer.
please answer questions 2 and 3 QUESTION 2 What mass of NaCl is needed to prepare 100.0 mL of 0.500 M NaCl solution? O 0.856 g O 0.342 g O 2.92 g O 1.17 g QUESTION 3 What volume of 5.00 M NaOH stock solution is needed to prepare 100.0 mL of 0.250 M NaOH solution? O 0.200 mL 0 12.5 mL 5.00 mL 80.0 mL Click Save and submit to save and submit. Click Save an Anen
How many grams of NaCl are needed to prepare 160 mL of a 0.55 M NaCl (aq) solution?
250 mL of 2 M NaCl solution was mixed with 50 mL of 0.5 M NaCl solution. What is the concentration of the solution that we will get? If this solution then was diluted with 200 mL of water, what would be the concentration of the final solution?
To prepare the sample solution, weigh out the necessary mass of NaCl to prepare 50 mL of 0.10 M NaCl solution. What is the necessary Mass for this solution?
calculate the amount of NaCL and water needed to prepare 50.0 mL of a 1.85% (by mass) NaCl solution. Assume that the added salt does not change the volume of the water.
What volume of 4.05 M NaCl is needed to make 500 mL of 0.300 M NaCl solution? _____ mL (Report your answer with correct sig figs in units of mL)
Suppose you need to prepare 125.5 ml of a 0.256 M aqueous solution of NaCl. What mass of NaCl do you need to use to make the solution? Answer:
17. What volume of 0.345 M NaCl solution is needed to obtain 10.0 g of NaCl? 18 How many milliliters of a 0.0015 M cocaine hydrochloride (C17H22ClNO4) solution is needed to obtain 0.010 g of the solute? 19.. A solution having an initial concentration of 0.445 M and the initial volume of 45.0 mL is diluted to 100.0 mL. What is its final concentration? 20. A 50.0 mL sample of salt water that is 3.0% m/v is diluted to 950...