love you like a song

After hearing Gu Nan's words, Mu Zi'an breathed a sigh of relief. Mathematics can be passed according to her mental arithmetic ability. Biological knowledge points are roughly remembered, and physics is barely there, but what about other subjects?

She is not good at anything, especially English, she has long forgotten it.

If it was only chemistry, she would have nothing to worry about.

"But you can't be idle for a month." Seeing Mu Zi'an, Gu Nan was obviously relieved, and smiled casually. She knocked on the table and said.

"For the next month, you will train with me. In the morning, I will ask you to leave and practice with me at home. In the afternoon, you will go to school to study, and the exam will take about two hours after six o'clock in the evening."

Mu Zi'an roughly thought about the itinerary.

People are most effective at around nine o'clock and six o'clock in the morning, and they fall into a period of fatigue from two o'clock to four o'clock in the morning. Gu Nan obviously took this into consideration, and arranged a regular schedule for her.

Gu Nan's general idea is: go to school in the afternoon to show your face, so that others can't gossip, that's fine.In the rest of the time, study hard at home with her.

Mu Zi'an nodded and agreed with her arrangement.

"After nine o'clock in the evening, you have to study Chinese and English with me, and you can't go to bed until eleven o'clock."

Mu Zi'an was startled, learning Chinese and English so late?She wondered if Gu Nan could teach her well, after all, she remembered the time when Gu Nan crushed her with knowledge.

Gu Nan ignored her, and knocked on the table on his own. "Doudou, you are starting to do the problems in this book now. I have drawn everything you need to do. I will give you two hours to do these problems."

After speaking, he pushed the exercise book over, found it from the bookshelf, put on his glasses and started reading.

Mu Zi'an was not in a hurry to do the questions, he looked at the cover of the textbook first, and almost vomited blood after seeing it.She even suspected that Gu Nan asked her to do this kind of question after her high school competition results came out.

Because a big IChO was written in purple on the silver-gray cover, and a string of small characters "International Chemistry Olympiad Test Questions" was printed in the lower right corner.

The International Chemistry Olympiad is the largest and most influential chemistry competition for middle school students in the world, and the difficulty of interview questions is higher than that of high school students.Because these questions cannot be called normal at all, and they must be solved with a way of thinking that is different from ordinary people.

Moreover, in order to test your flexibility on the spot, some questions even set thresholds for you.As long as you fall into the misunderstanding of thinking and don't have special ideas and practices, don't try to do it.

What is even more tangled is that these questions are divided into two parts, the theoretical part and the experimental part, and all of them are answer questions.

Gu Nan drew three questions for herself, but she, who was always stingy, gave Mu Zi'an two hours, which was not easy to think about.

Mu Zi'an didn't dare to waste time, he lowered his head and began to read the questions.

Because Mu Zi'an had never been in contact with this kind of international competition in his previous life, he was a little flustered, and now he habitually rubbed his teeth against his nails while reading the questions.

The nails of her fingers were irregular, somewhat deformed, pitted, and appeared in a 'horizontal rectangle' shape, which was very strange. This was caused by frequent finger biting.

It's just too confusing.Mu Zi'an bit her nails again, bowed her head and wrote in a hurry, but she didn't write in a hurry, because almost writing a few words required more than 10 minutes of thinking, so after two hours, she had just written The beginning of the second question.

The first big question is written in German and translated by Gu Nan below. The general idea is this: The adsorption behavior of gas molecules on the solid surface can be described by the following Langmuir isotherm formula: θ=(K*p )/(1+K*p)

where is the surface coverage, the fraction of surface sites occupied by gas molecules.

Note: p is gas pressure, K is a constant.At 25°C, K=0.85kPa-1.

1) Calculate the surface coverage at 25°C, 0.65kPa.

2) Calculate the pressure P when the surface coverage is 15%.

3) Calculating the decomposition rate of gas molecules on the solid surface depends on the surface coverage (neglecting the reverse reaction): r=k*θ

Assuming the above Langmuir isotherm is reasonable (neglecting the products), give the order of the decomposition reaction at low pressure and high pressure respectively.

Mu Zi'an almost immediately understood that this was testing the narrowly applicable single-layer adsorption theory, and began to use reverse thinking to deduce it all the way to the surface coverage. The more complicated it is.

She used the non-stop method twice, the process is too cumbersome, so I won't mention it for now.

Gu Nan looked up at her and said. "Take it here and show me."

Mu Zi'an nodded with a bitter face, and handed her the exercise book.

This type of question is what she should be exposed to more.Gu Nan was obviously dissatisfied that she only did one question, and looked up at Mu Zi'an. "I'll show you, you continue to do it, you can't do it until you finish the other questions."

"..."

This sense of familiarity crushed by knowledge...

Mu Zi'an lowered his head and continued writing, blushing a little.

In fact, only the first question is the most difficult, and the remaining two questions, Mu Zian finished it in an hour. I think the International Chemistry Olympiad exam time is a little more than four hours, and the theoretical part only has seven questions. It can't be like this difficult.

Gu Nan raised his head, saw Mu Zi'an drinking water, and said.

"Doudou, look at your first question. If seven points are counted, you can probably get four points. Put this question in the Olympic competition. The average score of our country is [-] points, so you will be considered as a general." A little bit on the score line."

"You can get more than [-] points for the remaining two questions, but the average score of the Chinese representative team is [-] points, so it seems that your average level is not much different from that of the representative team, but you took too long .”

Mu Zi'an was very depressed. At such an advanced age, he had so much more knowledge than middle school students, yet he was inferior to middle school students, and was still 'scorned' by Gu Nan.

Her heart sank suddenly, and various emotions such as disappointment and annoyance surged up.

Mu Zi'an is not a strong person, otherwise he wouldn't be in that state in his last life.

However, she also knows how to move forward.

In Mu Zi'an's mind, rebirth is a very vague thing, every time he thinks that he was reborn, but is regarded as a genius by Gu Nan or others, he feels like cheating.

Gu Nan didn't see Mu Zi'an's remorse, but felt that she was much younger than the members of the representative team, even the youngest member of the representative team was six years older than the girl, so it was not bad to make it like this.

Gu Nan just said something lightly. "Actually, it's not bad. I'll find a topic for you in the international competition next time."

Mu Zi'an: "..."

Uh, slap a sweet date?

Gu Nan flipped through the exercise book and said to her. "Sit closer, and I'll explain these questions for you."

Hearing this, Mu Zi'an sat a little closer in a daze, listening to her.But within 5 minutes, Mu Zi'an became entangled, why did she forget that Gu Nan's lectures were always inattentive, and she didn't even bother to open her mouth when she spoke?

Listening to the unconstrained thinking, Mu Zi'an soon couldn't help complaining. "Nan Nan, what are you talking about? I don't understand."

It's not that Gu Nan doesn't want to give her a good explanation, but her habit of giving lectures is like this, and she doesn't refute, and takes out a stack of draft paper from the drawer.

"I'll write down the process for you to read, and ask me if you don't understand."

Most people with some experience know that sometimes after finishing a question and looking at the answer, there is a sudden realization: it feels like this is the way to do it.

Mu Zi'an paused to look at the detailed answers on the paper, and occasionally Gu Nan gave some pointers, and it was already 10:30 in the evening.

She only felt that her waist was sore and her back hurt from sitting, so she stood up quickly and said coquettishly. "It's too late today, can you stop learning English? I'm so sleepy, Nannan~~~"

Mu Zi'an's laziness relapsed again.

"No." Gu Nan looked at his watch while tidying up the desk. "It's 10:30, you study half an hour less than others today, and half an hour less than others tomorrow, how much difference will there be?"

The tone is very serious.