If 80 mL of 5% KOH is diluted to a volume of 1 L, what is the concentration of t

Question

If 80 mL of 5% KOH is diluted to a volume of 1 L, what is the concentration of the diluted solution in % and mg%?
If 60mL of 3 g/dL NaCN is diluted to a volume of 1L, what is its concentration in g/dL and mg/dL?
Explain/ show me how to solve for these two. If 80 mL of 5% KOH is diluted to a volume of 1 L, what is the concentration of the diluted solution in % and mg%?
If 60mL of 3 g/dL NaCN is diluted to a volume of 1L, what is its concentration in g/dL and mg/dL?
Explain/ show me how to solve for these two.
If 60mL of 3 g/dL NaCN is diluted to a volume of 1L, what is its concentration in g/dL and mg/dL?
Explain/ show me how to solve for these two.

Explanation / Answer

1)

M1 = 5%

V1 = 80 mL = 0.08 L

M2 = ??

V2 = 1 L

M1 V1 = M2 V2

5% x 0.08 = M2 x 1

M2 = 0.4 %

concentration of the diluted solution in % = 0.4 %

concentration of the diluted solution in mg% = 400 %

2)

M1 V1 = M2 V2

3 x 0.06 = M2 x 1

M2 = 0.18 g/dL

concentration in g/dL = 0.18 g/dL

concentration of the diluted solution in = 180 mg/dL

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