1 molar solution of Pb(NO3)2 you want 3mL of 0.5 Molar Pb(NO3)2 how much of the one molar solution do you mix with H2O to reach your goal
To calculate how much of the 1 molar solution of Pb(NO3)2 you need to mix with water in order to achieve a 3 mL solution with a concentration of 0.5 M, you can use the formula:
C1V1 = C2V2
Where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.
In this case, C1 is 1 M, V1 is the volume of the 1 M solution (which we want to find), C2 is 0.5 M, and V2 is 3 mL.
Rearranging the formula to solve for V1 gives us:
V1 = (C2 * V2) / C1
V1 = (0.5 M * 3 mL) / 1 M
Simplifying this equation, we have:
V1 = 1.5 mL
So, you would need to mix 1.5 mL of the 1 molar solution of Pb(NO3)2 with water to obtain the desired solution.