Name: __________________________________________
Date: ____________
WKST #8: Molarity and Dilutions (40 points)
Period: ___________
Follow the procedure below to answer each of the long answer questions to receive full credit.
Write the formula – it’s alright to use abbreviations, just make sure they make sense!
Substitute the appropriate numbers
Solve the problem and include the appropriate units
Place a
BOX
around your answer so I can find it easily
1. If I have 340 mL of a 0.50 M sodium bromide solution, what will the concentration be if the entire
sample is diluted to a final volume of 750 mL?
2. If I dilute 250 mL of 0.10 M ammonium hydroxide solution so that the final concentration is 0.25 M,
what is the volume of the diluted solution?
3. If I leave 750 mL of 0.50 M magnesium chloride solution uncovered on a windowsill and 150 mL of
the solvent evaporates, what will the new concentration of the magnesium chloride solution be?
4. To what volume would I need to add water to the evaporated solution in problem 3 to get a solution
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 Spring '11
 DONAHUE
 Molarity, Magnesium, ml, Anabolic steroid, fluoxymesterone

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