0.5 mL of a 0.04 M CoCl2 solution is combined with 1.5 mL deionized water. What is the molarity of the solution?
use dilution formula
M1*V1 = M2*V2
1---> is for stock solution
2---> is for diluted solution
Given:
M1 = 0.04 M
V1 = 0.5 mL
V2 = 1.5 mL + 0.5 mL = 2 mL
use:
M1*V1 = M2*V2
M2 = (M1*V1)/V2
M2 = (0.04*0.5)/2
M2 = 0.01 M
Answer: 0.01 M
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