A)
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 4.5 M
M2 = 0.2 M
V2 = 258 mL
use:
M1*V1 = M2*V2
V1 = (M2 * V2) / M1
V1 = (0.2*258)/4.5
V1 = 11.5 mL
Answer: 11.5 mL
B)
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 6.5 M
M2 = 0.1 M
V2 = 716 mL
use:
M1*V1 = M2*V2
V1 = (M2 * V2) / M1
V1 = (0.1*716)/6.5
V1 = 11.0 mL
Answer: 11.0 mL
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