Worksheet Name:

You have 100 ml of a solution that is 150 ppt in concentration and you need 300 ml for the final volume. What will the ending concentration be?

V_Begin X C_Begin = V_End X C_End

V_Begin X C_{Begin =} C_End

V_End

V_Begin = 100 ml

C_Begin = 150 ppt

V_End = 300 ml

Multiply 100 x 150 = 15,000

Divide 15,000 / 300 = C_End

C_End =

Next you have 80 ml of a solution that is 120 ppt. You need a solution that is 10 ppt. you start by pouring 10 ml into a 100 ml graduated cylinder. How much distilled water will you need to add to get 10 ppt?

V_Begin X C_Begin = V_End X C_End

V_Begin X C_{Begin =} V_End

C_End

V_Begin =

C_Begin =

C_End =

V_End =

These are easy.

Now you have a solution that is 180 ppt and you need to end with exactly 70 ml of a solution that is 35 ppt. How much of the 180 ppt solution should you start with?

V_Begin X C_Begin = V_End X C_End

C_Begin = V_End X C_End

V_Begin

V_Begin =

C_Begin =

C_End =