Dilutions. Show work 1) If 35 mL of a 1.00 M solution is diluted to a total volu

Question

Dilutions. Show work

1) If 35 mL of a 1.00 M solution is diluted to a total volume of 100. mL in a volumetric flask, what is the resulting concentration of the solution?

2) If you want to prepare a 250. mL of 0.50 M NaCl, how many mL of a 3.0 M solution are required?

3) If 30.0 mL of 1.25 M BaCl2 , solution is mixed with 20.0 mL of water, what concentration is the resulting solution?

4) How many mL of water would you need to add to 80.0 mL of 2.5 M CaBr2 to make the final diluted concentration 1.00M?

Explanation / Answer

Q1.

apply dilution law

M1*V1 = M2*V2

substitute data

35*1 = 100*M2

M2 = 35/100 = 0.35 M

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