7. Which element from the table above is an lon? Charge? Is it an anion or a cation? (3 points) Element: Charge: Type: plzzz help. my assignment it's almost due!!!

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?