1. Water is an amphoteric substance. In any sample of water some of the moles
In any sample of water some of the molecules perform acid-
base reactions with each other. This is called the autoionization of water. Write a chemical reac
tion showing the acid-base reaction of two water molecules.

2H₂O (l) ⇄ H₃O⁺ (aq)  +  OH⁻(aq)

Explanation:

The autoionization of water is defined as a chemical reaction where there is an equilibrium in which two water molecules react producing an hydronium ion and a hydroxide ion. This is also defined as the autoprotolysis of water, and is based on its amphoteric nature.

The substance that can donate protons as well as receive them is defined as amphoteric. In this way, the water behaves amphoteric as it donates a proton as an acid of Brownsted Lowry or if it receives a proton, being a base.

NH₃ + H₂O ⇄ NH₄ + OH⁻               Kb

In this case, water behaves as an acid, it donates the proton to ammonia (a base)

CH₃COOH + H₂O ⇄ CH₃COO⁻ + H₃O⁺              Ka

For this case, water behaves as a base, it recieves the proton from the acetic acid (acid)

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation:

b. examine and describe cells