Only then did Li Zheng realize that the joke had been finished.

So where's the fun...

"Ah... isn't it funny?" Shen Yiyun scratched his head and smiled naively, "This is probably a joke that only people from the Huayuan can understand."

"No, no, no, it's quite funny. If I knew what the dean and tutor were like, I would have laughed out loud."

"Yes, yes, the dean is a real overtime maniac. Senior brother is like asking someone who has 100 steps to report 50 steps."

"Hahaha...that's it." Li Zheng forced a smile and then said, "The meme itself is difficult to get, but it's really interesting for senior sister to tell it. You will definitely look better when you act in it than the current Hua Dan."

"Oh my god..." Shen Yiyun blushed again, "It's just... art comes from life~"

Opposite me, Shi Yang was holding the dropper, as if he was about to bleed.

He listened to the two men whispering like mosquitoes.

It just doesn't feel right.

Isn’t this a field where chemical prowess is respected?

Chemistry sister, don’t be fooled by this guy who looks like a scumbag.

Look at me here, look at me here.

However, Shen Yiyun and Li Zheng chatted more and more passionately, and couldn't help but perform more Huayuan jokes, covering their faces and laughing from time to time.

Shi Yang couldn't bear it anymore and said solemnly: "Then shall I start?"

After hearing this, Shen Yiyun's originally smiling face was instantly covered with a layer of frost.

"Yes, please."

Shi Yang gritted his teeth.

Really a big change of face?

No way, big sister.

I will use my chemical strength to save you!

Shi Yang got angry and started his performance without even looking at the experimental principles and procedures.

"Preparation and titration of coumarin-3-carboxylic acid, Shi Yang."

As he spoke, he unscrewed a dark reagent bottle (salicylaldehyde), dipped the dropper into it and sucked it for a while, then picked up the measuring cylinder, dripped the solution in, repeated it twice quickly, and then screwed on the reagent. bottle, without looking at the scale of the measuring cylinder the whole time.

"Wait a minute, points will be deducted." Shen Yiyun raised his hand and sneered, "Look at the roll - take 2 ml of salicylaldehyde. Do you know how much you took?"

"2 ml." Shi Yang didn't squint his eyes and had already unscrewed the second reagent bottle (diethyl malonate).

Shen Yiyun's nose tightened, and he wanted to check immediately to kill his arrogance.

But as the eldest sister of Yanji, she always seems very embarrassed if she spends every penny so much.

Although Li Zheng was very good at observing words and emotions, he was not strong enough to see this level. He just relied on his curious instinct and walked around to the test bench, lying on the table and staring at the scale.

2ml, exactly the same...

There used to be a legend that there was a lady who sold sweets, who was known as "the one who could get it right". She would pick up the exact amount of it, and it would be exactly that many pounds.

Now, he witnessed with his own eyes the precision of Cobalt God.

At this time, he turned to look at the man who was taking the reagent.

It's as if the whole person has an invisible chemical molecular aura.

This man, he is no longer Shi Yang.

He is the Cobalt God.

at the same time--

【Student movement detected.】

【Shi Yang:27】

[Learning limit: 26.]

【learning……】

[Student movement +0.1...]

【+0.1……】

Li Zheng stared.

He won't close his eyes anymore. He won't close his eyes until he gets enough training.

Now, the only reference for the student movement is Li Zheng himself.

is 4.

But Shi Yang, a wealthy man, had nearly seven times his luck.

These experimental talents of his are really the great fortune needed by the times.

It's mine, it's mine, it's all mine!

Of course, stealing luck or something is just a joke.

For scholars, this is learning, brainstorming, and joint improvement.

Since the system clearly states that it is learning, then Cobalt God's luck will not be reduced because of this.

Inside and outside, the country's luck increases out of thin air, which is a good thing.

Li Zheng just stared at Shi Yang intently, then returned to Shen Yiyun's side.

"It's really 2 milliliters, exactly the same..." Li Zheng said softly.

"Uh..." Shen Yiyun said bitterly, "This... isn't very difficult. I had a senior brother three years ago... who could do it."

On Shi Yang's side, once he started experimenting, it seemed as if he couldn't hear the person on the other side speaking at all. In the blink of an eye, 2.4ml of diethyl malonate and 10ml of absolute ethanol were poured into a 50ml round-bottomed flask in sequence.

There are naturally a lot of little tricks and little moves in between.

For example, when adding absolute ethanol, Cobalt God obviously slowed down the adding speed, and at the same time, he quickly rotated the flask and poured it in circles.

It's obvious that this is what Cobalt God did intentionally.

But Li Zheng couldn't see through it.

I had no choice but to lean into the eldest sister’s ear: “Why…”

Before he could ask his doubts, Shen Yiyun replied: "When I dropped the reagent before, it was inevitable that some would stick to the wall of the bottle. He did this in order to use absolute ethanol to remove all other raw materials on the wall of the bottle. Rush down."

Li Zheng said "Huh" and then realized.

It is impossible to write these small details in the test questions.

Only those who have really done a lot of experiments will naturally form some habits and skills.

We have just begun, and there must be a lot of little tricks like this.

Cobalt God, show your academic talent to the fullest.

On the opposite side, after Cobalt God prepared the solution, he placed the flask on the oil bath stand and fixed it. Then he used a high-precision plastic syringe to take some piperidine, inserted the needle into the bottle, and injected it very carefully, and the solution changed accordingly. yellow.

"Humph..." Shen Yiyun suddenly smiled, but quickly stopped.

What did she see?

Li Zheng didn't know.

I even doubt that I would know even if I asked.

Well, then don’t ask, just hum like you understand.

"snort."

The Cobalt God didn't pay attention to the two of them at all. He took another tube of glacial acetic acid, hung his hand motionlessly on the beaker, and kept it in the middle for a long time before dripping it in.

Different from the previous unrestrained movements, these two drops were very cautious, presumably because they were afraid of getting on the bottle wall.

Chemical experiments have very strict dosage requirements. In many cases, only one drop, a little more or a little less, will affect the reaction rate and reaction volume. In serious cases, unexpected and strange reactions may even occur, eventually leading to the failure of the experiment.

Take this question about preparing coumarin, for example, the final yield score is as high as 40 points.

For this question, the theoretical yield is 2.53 grams.

But that's just theory, it's a yield without losing a single molecule.

In an environment like a university laboratory, under human manual operation conditions, the limit of productivity is about 90% of the theoretical output.

Therefore, when scoring, as long as the final yield is higher than 80%, the full score is 40 points.

70%, 35 points.

60%, 30 points.

And so on.

Looking at the cobalt god who skillfully placed the condenser tube, Shen Yiyun finally became serious: "This kind of question, according to undergraduate standards, as long as the yield reaches 70%, it is considered excellent."
To be continued...