We are being asked to find the volume of 0.45 M NaCl can be prepared by diluting 150 mL of 0.78 M NaCl.
When we are adding water (or solvent) to a solution to decrease its concentration, we are diluting the solution. When dealing with dilution we will use the following equation:
M1 = initial concentration
V1 = initial volume
M2 = final concentration
V2 = final volume
Calculate the final volume of the 0.45 M NaCl solution.
Your lab partner messes up and accidentally makes the needed solution of NaCl too concentrated, 150.0 mL of a 0.78 M solution, when you needed 150.0 mL of a 0.45 M solution. You sigh, and add water to dilute the solution. What is the final volume of your corrected 0.45 M NaCl solution?
A. 86.5 mL
B. 1,730 mL
C. 260. mL
D. 520. mL
E. 192 mL
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What scientific concept do you need to know in order to solve this problem?
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