Question

A 100. mL volume of 0.800 M calcium chloride is mixed with 400. mL of water to make 500. mL of solution. What is the final molarity of this solution ?

Answer 1

To find the final molarity of the solution, use the formula M1V1 = M2V2. Plugging in the values, we can solve for M2, which is the final molarity. In this case, the final molarity is 0.160 M.

Step-by-step explanation:

To find the final molarity of the solution, we need to use the formula:

M1V1 = M2V2

Where M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

In this case, M1 is 0.800 M, V1 is 100. mL, M2 is unknown, and V2 is 500. mL. Plugging in these values, we can solve for M2:

(0.800 M)(100. mL) = M2(500. mL)

Dividing both sides by 500. mL gives:

M2 = (0.800 M)(100. mL) / 500. mL = 0.160 M

Therefore, the final molarity of the solution is 0.160 M.