Composition chimique

I) composition chimique :

1°) Du sel-vinaigre :

a)  Le sel :

Le sel est du chlorure de sodium NaCl, c’est-à-dire qu’il est composé de d’ions chlorure Cl- et d’ions sodium Na+.

Voici un schéma de l'agencement des ions :



b)  Le vinaigre Blanc :

Le vinaigre blanc (ou vinaigre d’alcool) est composé d’eau et d’acide éthanoïque. Il provient de la fermentation d’alcool de betterave.


2°) Le Roundup :


Le principe actif du Roundup est le glyphosate.

Le glyphosate est une molécule crée par Monsanto en 1974. Le groupe a obtenu un brevet qui est tombé dans le domaine public en 2000.

Voici plusieurs représentations de la molécule de glyphosate :


Dans le Roundup, on trouve également de nombreux adjuvants :


Commentaires (2)

1. oi (site web) 10/03/2015

Two rabbits are in a garden and one of the rabbits says, "Thith carrot tathes pithy."

The other rabbit says, "Yes, I know, I just pithed on it."

Two guys were out fishing on the lake when a hearse and funeral procession passed the boat on a nearby road. One of them stood up and held his fishing hat over his heart as the hearse passed. His buddy commented, "Gee, Harry, that was really nice and respectful!"

To which Harry replied, "Well, after all we were married 40 years."

There's this penguin, driving through the South, the Deep South... late August. The hot months. "Ew! But it sure is hot!" the penguin lisped from behind the wheel of his choking jalopy.

Suddenly! The jalopy fails the penguin and he has to push it down a bumpy road to the next small town. He got out, and with all his strength in his weak flippers, he pushed the car over hill and dale.

"Whew!" he sighed.

As luck would have it, there was a mechanic in town, and he told the penguin that he'd have to spend some time with the car. "Why don't you come back in an hour or so?"

Wiping the sweat from his brow, the penguin espied an ice cream shoppe! "Hurray and yippy!" he cried! "I'll be back, toot sweet!" he said.

He ordered the tallest vanilla ice cream he could hold between his vestigial wings... those miserable fins could barely manage the scoops upon scoops of creamy goodness. The cone was so tall that more of it ended up on the penguin than in him!

"Yummy! That was very very good!" the penguin said, smacking his lips.

He waddled back to the mechanic who was ready to give the little fellow an update. The mechanic looked at the penguin sternly. The gaskets and seals on the engine were severely damaged after years of driving without a routine check, and it was certainly going to be expensive.

"Well, it looks like you blew a seal."

"Oh no, that's just ice cream!" the penguin said, wiping the ice cream from his chin.

A set of jumper cables walks into a bar. The bartender looks at them and says, "OK, I'll serve you, but don't start anything."

There’s a sweet old couple happily living life. One day the wife went in for a medical exam and when she came home she reported to her husband, "The doctor says I have the heart of a 50-year-old, lungs of a 40-year-old, and the blood pressure of a 25-year-old."

The huband replies, "Oh really? And what did he say about your 70-year-old ass?"

She replied, "He never mentioned you."

As a young minister, I was asked by a funeral director to hold a graveside service for a homeless man, with no family or friends, who had died while traveling through the area. The funeral was to be held at a new cemetery way back in the country, and this man would be the first to be laid to rest there.

As I was not familiar with the backwoods area, I became lost; and being a typical man, I did not stop for directions. I finally arrived an hour late. I saw the crew, eating lunch, but the hearse was nowhere in sight. I apologized to the workers for my tardiness, and stepped to the side of the open grave, where I saw the vault lid already in place. I assured the workers I would not hold them long, but this was the proper thing to do.

2. oi (site web) 10/03/2015

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