Chapter 89 (1/2)

In the chemistry teaching and research room, Li Zheng, Lin Yujing and Xu Mengxi came to kill the topic with the force of thunder.

But just hit the first question, it seems to fall into the eight trigrams array -

[1, according to the conditions, write the chemical reaction equation]

[1-1: in industry, ammonium bicarbonate and magnesium borate (mg2b2o4 (OH) 2) are used to prepare boric acid in aqueous solution.

Li Zheng: what the hell is this? I'm really 150 + in chemistry?

Shen Mengxi: don't panic Don't panic Analyze carefully Step by step Don't panic No No, wow!

Lin Qijing: Well .。

However, this is only the first small problem of the first big problem.

The most simple question.

Yes, only 2 points.

Li Zheng now is to know, why Sun LeYang said that can get 10 points is the boss.

Although the title is so terrible, Li Zheng still didn't drive 56 times.

This time, he just wants to know his true level.

Go home and drive again.

……

Three people work hard to do the problem, has completely lost the concept of time.

Until the preparatory bell rings.

Li Zheng raised his head in horror.

Are you kidding?

It's only 14.

But listen to Yu Hong said: ”Mr. Sun went to class, I have said hello to Mr. Tang, you continue to do, the examination time is three hours, don't worry.”

Li Zheng was relieved and glanced at the two people nearby.

Xu Mengxi's answer progress is similar to his own.

Lin Yu static side lying on the table, powerless to open the second interview paper.

Li Zheng's eyes glared.

What's the situation?

We've started to answer the second one. Are you over half finished?

Did you even steal college chemistry?

It's too cunning.

Li Zheng didn't think much about it. He went back to the scroll again.

[in the solution of metal ion m3 +, adding acid HMX and controlling the conditions, different precipitates can be obtained. At pH 1, precipitation a (m2xn · yh2o, Y10) was obtained 】

damn it.

What the hell is this saying

Forget it. Do it hard.

……

Unknowingly, three people are turned into a test machine.

The bell rang again and again, but they turned a deaf ear.

Finally, Yu Hong clapped his hands: ”well, Mr. Sun has been waiting for half a day, three and a half hours.”

Bang.

He never groaned at the table again, and then he shook his hands Hmmm Beep, click, click

Next to him, Xu Mengxi's hand was soft and his pen fell to the ground.

Staring at the white wall, his eyes are empty and his body is empty.

It's like a wasted life.

Li Zheng's brain was already in a state of chaos. After throwing away his pen, he leaned back in a daze and gasped for breath.

It's like the bomb squad just cut the red thread.

After a disaster.

At the same time, the corners of Li Zheng's mouth twitched. I don't know when, he has recited the meditation mantra that can only be activated when he learns to crack: ”Nanwu, drink Ratana, Dora night Nanwu, ahoye Katypa Shuo Bo Luo ye... ”

There is no doubt about it.

All three people, they all collapsed.

It's a problem. It's broken.