Hello Ally

To solve this question, you would use the dilution equation, which is

C

Rearrange to solve for V

V

= 100% x 20 mL / 1%

= 2000 mL

To solve this question, you would use the dilution equation, which is

C

_{1}V_{1}= C_{2}V_{2}Rearrange to solve for V

_{2}V

_{2}= C_{1}V_{1}/ C_{2}= 100% x 20 mL / 1%

= 2000 mL

Take 20 mL of the 100% solution and add 1980 mL of water to make 2000 mL of the 1% solution.