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What volume of 1 M stock solution is needed to make 500 mL of a 0.2 M solution?
A200 mL
B250 mL
C50 mL
D100 mL
Answer & Solution
Correct answer: D. 100 mL
From M1V1 = M2V2, V1 = (0.2 x 500) / 1 = 100 mL.
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