An object carries a charge of -8.0 mC, while another carries a charge of -2.0 mC. How many electrons must be transferred from the first to the second object so that both objects have the same charge

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?