Q1)
A 10.0 mL solution containing 0.15 g/L of Blue #2 dye is diluted to a total volume of 100.0 mL. What is the concentration of the diluted solution (in g/L)?
Q2)
A 10.0 mL solution containing 0.044 M of Blue #2 dye is diluted to a total volume of 100.0 mL. What is the concentration of the diluted solution (in M)?
1)
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 0.15 g/L
V1 = 10 mL
V2 = 100 mL
use:
M1*V1 = M2*V2
M2 = (M1*V1)/V2
M2 = (0.15*10)/100
M2 = 0.015 g/L
Answer: 0.015 g/L
2)
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 0.044 M
V1 = 10 mL
V2 = 100 mL
use:
M1*V1 = M2*V2
M2 = (M1*V1)/V2
M2 = (0.044*10)/100
M2 = 0.0044 M
Answer: 0.0044 M
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