Chapter 192 The data is correct, but your sign is wrong
In the lecture hall of the School of Chemical Engineering.
Su Jiang was looking Feng Yuhua up and down.
"You're welcome to compete with me, but don't have any more evil intentions." Su Jiang said jokingly, and at the same time glanced coldly at Ji Ba Xiao and You Weizhao.
The latter once again showed shame and did something on his own, which ended up being a trap for himself.
Feng Yuhua said with some disdain: "Don't worry, I, Feng Yuhua, am definitely an upright person and will never do anything sneaky."
"As long as you can beat me, then our Chemistry Department will automatically admit defeat!" Feng Yuhua said directly without caring about the thoughts of his classmates in the Chemistry Department.
Ji Baxiao felt that her status was insulted, but there was nothing she could do about it. Not only did Feng Yuhua have a rich family, but her grades were also top-notch. She was simply not something that she, a student union president in name only, could compete with.
"Okay, then I'll compete with you!" Su Jiang had a slight change in his view of Feng Yuhua. This guy looked like a playboy, but his character was okay.
Feng Yuhua didn't hesitate.
With the expectant eyes of his fellow students from the chemistry department, he picked up the microphone and started asking questions:
"At 25 degrees Celsius, it is known that the infinite dilution molar conductivity of ammonium chloride is 149.8, that of sodium hydroxide is 248.11, and that of sodium chloride is 26.5. What is the approximate infinite dilution molar conductivity of sodium hydroxide?"
After Feng Yuhua finished speaking, he took off the microphone because he knew that ordinary people must think carefully about this kind of topic.
There was silence in the lecture hall.
There are only some students shouting in their hearts:
"Feng Yuhua is really awesome. The first question is about physical chemistry. I fall asleep every time in the special physical chemistry class!"
"This topic seems very familiar to me. It is infinite dilution molar conductivity. Why have I forgotten its definition?"
"Hey, how can I solve this kind of problem without getting a piece of scratch paper to do the calculations?"
Even the people in the mathematics department, including Lin Wanqing, frowned slightly because this question was a bit difficult to think about.
How could anyone come up with such a calculation problem?
"Do you need to get a piece of paper and do some calculations?" Feng Yuhua looked at Su Jiang and felt that he might have gone too far by asking such a difficult question.
only.
He just finished speaking.
Su Jiang directly picked up the microphone: "271.4"
In an instant, the entire audience turned their attention to Feng Yuhua again.
Because in such a short period of time, even if they took out the paper, they could not calculate the answer so quickly.
Even if you check it on your mobile phone, you won't get the result so quickly.
Feng Yuhua was stunned.
This question is a competition simulation question that Feng Yuhua did.
But since it is just a fill-in-the-blank question, there is no need for precise calculations. It is written roughly, so everyone only needs to write single digits.
Therefore, the answer Feng Yuhua knows is 271.
He never expected that Su Jiang would now give him one decimal place.
Confused.
Completely confused.
Let's be honest, if Su Jiang's data after the decimal point is wrong, then it will appear that he is very unprofessional.
But if I say it's wrong, my 271 is still right.
For a moment, Feng Yuhua didn't know what she should say.
However, he was not the kind of person who was obsessed with saving face. He said frankly: "Ahem, your 271 is correct, but I have to calculate this 0.4 to see if it is correct, because we usually only calculate to single digits.
."
After saying that, he borrowed a pen and paper from a classmate, squatted on the ground and started calculating.
Looking at Feng Yuhua's appearance.
boom!
In an instant, the entire lecture hall exploded.
Everyone was shocked.
This means that in such a short period of time, Su Jiang used his brain to calculate the data results that Feng Yuhua needed to calculate using scratch paper.
Extremely scary!
Not to mention whether Su Jiang's answer is correct or not, this operation has shocked everyone.
At this time, some students searched on their mobile phones for a long time, but still could not find the documentation or solution process related to this question.
It seems that it is an original question, or a question that has not been made public.
Everyone can only wait anxiously for Feng Yuhua’s computer results.
Finally, after five minutes.
Feng Yuhua straightened up.
During these five minutes, there was no sound in the lecture hall except for some students who were frantically flipping through books, looking for something like infinite dilution molar conductivity, and the sound of calculations.
Feng Yuhua patted his calf, which was slightly numb after squatting for three minutes.
He raised his head and looked at Su Jiang: "You are very good at calculating the accurate answer so quickly. The answer is indeed 271.4!"
Although everyone had a feeling that if Su Jiang could say this 4, most of it should be accurate, but now hearing Feng Yuhua's affirmative words still made everyone a little shocked.
Suddenly.
The students in the chemistry department felt something was wrong.
The reason why Su Jiang dared to challenge all of them.
It’s not as if he’s not afraid of tigers like a newborn, let alone that he’s reckless.ъìqυgΕtv.℃ǒΜ
But people have such confidence.
Su Jiang didn't give everyone much time to think.
He directly picked up the microphone and said: "Okay, now I will give the question."
"At 300k, 2mol of ideal gas is irreversibly compressed from 300kpa to 1.66dm, and releases heat of 10kj, then what is the Δs of this process?"
Su Jiang's questions are very standard and elegant. If you ask me about inorganic, I will ask you questions in the field of inorganic chemistry, which is your best. If you ask me about organic chemistry, I will ask you questions in the field of organic chemistry. If you ask me about physics, I will ask you questions in the field of organic chemistry.
Chemistry, then I will reply to you about physical chemistry.
I won’t say yes at all. If you ask me about inorganic things, I will instead ask you organic questions about your slightly weaker areas.
Because generally, when asking questions, you must ask questions in the subjects in which you are strongest and most familiar.
And this is what Su Jiang calls defeating you in your strongest field.
Defeat you openly.
Feng Yuhua listened to the questions.
Without thinking clearly in his mind, he directly picked up the scratch paper and started calculating.
All the students could only stand aside and contribute shock value to Su Jiang.
Feng Yuhua came up with the questions and Su Jiang calculated them in his head. As a result, Feng Yuhua had to use paper to calculate his own questions.
Now that Su Jiang is asking the question, Feng Yuhua is counting on paper again.
When two people compare each other, they will make a judgment.
Even if Feng Yuhua calculated it and got it right, their chemistry department would still lose.
While waiting for Feng Yuhua's calculation results.
Su Jiang looked at Lin Wanqing and found that his sister Wanqing was leaning on the back of the chair and looking at him sweetly.
He made a heart-warming gesture towards Lin Wanqing.
Lin Wanqing also saw this, the smile on her face became even sweeter, and her big shining eyes formed two curved crescents.
The people in the math competition team were already numb at this time.
Anyway, the dog food in your mouth just now has not been digested, and now you can’t stuff it in even if you want to.
But I still get angry thinking about it.
On such a serious occasion, you still have the heart to show off your affection...
Feng Yuhua calculated for seven or eight minutes.
Finally, he looked up and figured it out.
"Is it 38.3?"
There are also many students in the chemistry department working on this topic.
However, no one made it.
In a tense and exciting atmosphere, people's efficiency in solving questions is much lower.
They all somewhat admired Feng Yuhua for having such level and calmness.
But in everyone’s expectant eyes.
Su Jiang then turned his head from Lin Wanqing back to Feng Yuhua: "Are you sure?"
When Su Jiang asked this question, Feng Yuhua lost all confidence in an instant.
He lowered his head and read on his paper again.
After a while.
Feng Yuhua raised his head with confidence: "I'm sure, there is nothing wrong!"
"Your data is correct."
Su Jiang nodded and said.
As soon as these words came out, all the students in the chemistry department breathed a sigh of relief.
At least they haven't lost yet, it's barely a draw.
Just when they were about to let out a long sigh of relief.
Su Jiang's words in the next second ruthlessly crushed the confidence of Feng Yuhua and his classmates from the chemistry department to pieces:
"But your sign is wrong. It should be negative. This is an exothermic process."