Most community water supplies have 0.50 ppm of chlorine added for purification.
What mass of chlorine must be added to 129.0 L of water to achieve this level?
0.5 ppm Cl2 means 0.5 mg Cl2/L
0.5 mg Cl2/L x 129 L = ? mg
What mass of chlorine must be added to 129.0 L of water to achieve this level?
0.5 mg Cl2/L x 129 L = ? mg