Determine the number of units of solution 2 required to obtain the desire percent alcohol concentration of the final solution. Then find the amount of the final solution. Concentration solution 1 is 10%. Amount of solution for 1 is 2gal. Concentration of solution 2 is 30% what is the amount for solution 2?

0.66 gal.

Step-by-step explanation:

The following should apply:

C1 * V1 = C2 * V2

we have that C1 is 0.1, that C2 is 0.3 and that V1 is equal to 2 gal

replacing the values we have that:

0.1 * 2 = 0.3 * V2

reorganizing the equation we have:

V2 = 0.1 * 2 / 0.3 solving this remains 0.66.

It means that the amount of solution 2 is 0.66 gal.