you added 3ml stock solution of 0.05mg/ml of dye and 7ml of water, what will be the final concerntration.

To calculate the final concentration of the solution, you need to consider the volume and concentration of each component.

First, let's calculate the amount of dye added to the solution:

Amount of dye = volume of stock solution × concentration of stock solution
= 3 ml × 0.05 mg/ml
= 0.15 mg

Next, let's calculate the final volume of the solution:

Final volume = volume of stock solution + volume of water
= 3 ml + 7 ml
= 10 ml

Now, we have the amount of dye (0.15 mg) and the final volume of the solution (10 ml). To find the concentration of the dye in the final solution, we divide the amount of dye by the final volume:

Final concentration = Amount of dye / Final volume
= 0.15 mg / 10 ml
= 0.015 mg/ml

Therefore, the final concentration of the solution would be 0.015 mg/ml.