What volume, in milliliters, of calcium chloride 15.0 M stock solution would you use to make 500 mL of 0.300M of calcium chloride solution?
20
5
15
10

The volume of stock solution of calcium chloride required is 10 mL.

Explanation:

A solution consists of solute and solvent. A solute is defined as the component that is present in a smaller proportion while the solvent is defined as the component that is present in a larger proportion.

To calculate the amount of solute needed, the formula used is:

            ....(1)

where,

are the concentration and volume of stock solution of calcium chloride

are the concentration and volume of diluted solution of calcium chloride

Given values:

Plugging values in equation 1:

Hence, the volume of stock solution of calcium chloride required is 10 mL.

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds