You decide it is time to clean your pool since summer is quickly approaching. your pool maintenance guide specifies that the chlorine, cl_2 , concentration of the pool should be between 1 and 3 ppm . in order to determine if your pool is safe to swim in, you send a sample of pool water to a chemist for analysis of the cl_2 content. the chemist reports a chlorine concentration of 2.82 x 10^− 5 m. convert the concentration of cl_2 to parts per million (ppm).

Yes, our swimming pool is safe to swim.

Explanation:

The ppm is defined as amount of solute in milligrams present in 1 L of the solution.

Concentration of swimming pool =

This means moles of is present in 1 Liter of the solution.

Mass of moles of :

1 g = 1000 mg

0.0020235 g = 0.0020235 × 1000 mg = 2.0235 mg

2.0235 mg of is present in 1 L of solution that is 2.0235 ppm.

1 ppm < 2.0235 ppm < 3 ppm

Yes, our swimming pool is safe to swim.

answer: - 3.) the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

solution: - as per the rules, oxidation number of oxygen in its compounds is -2. the sum of oxidation numbers of all the elements of a molecule or compound is zero.

also, the oxidation number in elemental form is zero.

in no, the oxidation number of o is -2 so the oxidation number of n is +2 so that the sum is zero.

similarly, the oxidation number of c in co is +2 and o is -2.

on product side the oxidation number of n is 0 as it is in the elemental form() .

oxidation number of c in carbon dioxide is +4 as there are two oxygen in it and we know that each oxygen is -2.

so, oxidation number of n is changing from +2 to 0 and the oxidation number of c is changing from +2 to +4.

since nitrogen is reduced and hence no is acting as an oxidizing agent. carbon is oxidized and so co is acting as a reducing agent.

so, the right choice is number 3.)the oxidation state of nitrogen in no changes from +2 to 0, and the oxidation state of carbon in co changes from +2 to +4 as the reaction proceeds.

i'm assuming that the correct answer is indeed the first one/ "a"..