Which of the following describes an element? Matter made up of only one type of atom
A substance made of two or more types of atoms
Two or more types of atoms chemically bonded together
Two or more types of atoms that are not chemically bonded

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Aa a of 22 m/s at an of 36.9 .be . a. b. c. (3)x y of? (3)go? (4) () it to to ?

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?