Chlorine is a chemical that is widely used in the treatment of pools. it eliminates bacteria and algae by disinfecting & oxidizes other agents like dirt. when chlorine is added to a pool, a reaction occurs in which a weak acid called hypochlorous acid is produced. chlorinated pools are usually treated with a chemical called calcium hypochlorite, ca(clo)2. pure chlorine (cl2) is not used for all the reasons below except one. which one? a) it is highly toxic b) it has a putrid odor c) it is a noble gas and therefore not reactive d) it is a gas and therefore difficult to handle

Correct answer is C.

Explanation: Chlorine is the 17th element in the periodic table that has an electronic configuration of which has 1 electron less than the stable [Ar] gas and is very reactive in nature.

Chlorine element is present in the form of gas that has a pungent odor and is highly toxic in nature.

Option A, B and D are the ones which shows the actual property of the Chlorine, why we do not use pure chlorine but Option C is the only option that does not show the correct property of pure chlorine.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.