Answer:
1a. 6.70 ml of stock dye solution is required
1b. 10.0 ml of stock dye solution is required
1c. 4.00 ml of stock dye solution is required
Explanation:
1a. Using m₁v₁ = m₂v
6.00 * 10⁻⁵ * v₁ = 20.0 * 2.00 * 10⁻⁵
v₁ = 4 * 10⁻⁴/6.00 * 10⁻⁵
v₁ = 6.70 mL of stock solution
Therefore, 6.70 ml of stock dye solution is required
b. Using m₁v₁ = m₂v
2.00 * 10⁻⁵ * v₁ = 20.0 * 1.00 * 10⁻⁵
v₁ = 2 * 10⁻⁴/2.00 * 10⁻⁵
v₁ = 10.0 mL of stock solution
Therefore, 10.0 ml of stock dye solution is required
c. Using m₁v₁ = m₂v
1.00 * 10⁻⁵ * v₁ = 20.0 * 2.00 * 10⁻⁶
v₁ = 4 * 10⁻⁵/1.00 * 10⁻⁵
v₁ = 4.00 mL of stock solution
Therefore, 4.00 ml of stock dye solution is required
The procedure is then followed as in steps 2 to 4.
