I often take the first test, and today I took the second test, how to face it

It seems that you take this issue very seriously, so you should regain your strength! However, I don't think it's necessary to stick to this kind of false name. Whatever you want.

There will be special circumstances for exams...

If the first place has been occupied by you, won't everyone die of despair?

Of course not...

A failure can't be just nothing,,, as long as you work hard, then there is no way.

Just be at peace ...

A failure can not bring a fatal blow, but to work harder and be courageous.

It's not easy for you to get such good results...

There is only one difference between the first and the second, and some people are more than 200 people when they fall. So, you don't have to do it for this one bit.

Depressed. After all, no one is perfect!!

If you can always take the first place, it means that you still have potential, don't give up... First, it always belongs to self.

Believers!!

Victory and defeat are a common thing in soldiers!

Always remember this sentence, is ranking really that important?

Of course it's important. But is learning about results?

Learning is a process, and what matters is whether you can get it, not the first and the second.

There is actually no difference between the first and the second! It's just a matter of luck! Thousands of miles will stumble when they run thousands of miles!

Believe that you are a Maxima, but also accept that you can stumble at any time, but it doesn't matter, the important thing is to make yourself a Maxima! Hehe! A little wordy to feel yourself!

na2o2+2cuso4+2h2o====2cu（oh）2↓+o2↑+2na2so4

It can be divided into two reactions, sodium peroxide reacts with water to form sodium hydroxide with water and oxygen, and copper hydroxide precipitates with copper sulfate.

The anomaly is that copper hydroxide precipitates due to high temperature dehydration to produce black copper oxide 2, since it is not a gas, then I have to modify it, "it is a green mixture that turns orange" so it is the discoloration of Cr2O3, because Kclo3 is a white crystal, Cr2O3 is a green solid, and Cr2O3 reacts with reactants to produce orange K2Cro4 (potassium chromate).

1.Crimson blue solution, bubbles. Others may have blue precipitates, black copper oxide, or whatever.

2.(Jida edition textbook): The mixture of clo2 and cl2 is prepared by reducing the acidic solution of chlorate, 2clo3 + 2cl + 2h = 2clo2 + cl2 + 2h2o

The first normal is the blue precipitate and gas, because it is an exothermic reaction, the reaction system is thermally unstable, and Cu(OH)2 will appear as a black precipitate instead of a blue precipitate.

The second orange gas is clo2

The first step of the reaction: 2Na2O2+2H2O=4NaOH+O2(g) The second step reaction: 2NaOh+CuSO4=Cu(OH)2(S)+)Na2SO4 The third step is Cu(OH)2==CuO+H2O (the generation of black matter Na2O2 reaction is exothermic).

I don't know if the second one should be (what Tingfang said).

First, there is a black precipitate 2Na2O2+2H2O=4NaOH+O2 2NaOH+CuSO4=Cu(OH)2(S)+Na2SO4 due to the release of a large amount of hot Cu(Oh)2 dehydration to produce CuO

Second, chlorine, in this reaction the trivalent chromium is oxidized to tetravalent, and the pentavalent chlorine is reduced to zero valent: CR2O3 + KCLO4 = Cl2 + KCRO4 is not trimmed, sorry.

Problem 1: The violent reaction between sodium peroxide and water releases a large amount of heat, which makes the generated copper hydroxide decompose into copper oxide, and the existing black substance is produced.

Question 2: The orange color is potassium dichromate k2cr2o7, I don't think it's potassium chromate, I remember this thing with a bit of green. This is where chromium is oxidized to +6 valence. Therefore, generally this kind of catalyst is not used, manganese dioxide, iron oxide, copper oxide and the like can be used.

The first ones are blue precipitates and gas bars that I can't think of.

The second Kclo3 is strongly oxidizing and Cr2O3 is oxidized and the ** state of chromium has +4 +5 +6 You can write about it in the form of oxides, and you can think of some kind of gas of chromium and chlorine mixed together to become orange.

Chlorine is the yellow-green color of everybody's base.

I think of one of the anomalous phenomena, that is, if there is more sodium peroxide, the copper sulfate solution is close to saturation, then there may be copper hydroxide precipitation and precipitated copper sulfate crystals, then there will be 2 precipitates.

Although it is all blue, the copper sulfate crystals are regular, and the copper hydroxide is the particles. Maybe the different solid shapes that sink on the bottom of the beaker are anomalous.。。

The bubbles upstairs said.,Precipitation.。。 I think it's normal.

The second question is chlorine... The guys upstairs were right.

1 There is gas release and brick red precipitation, because Na2O2 does not react with copper hydroxide, so it does not fade 2 ClO2 2KCLO3+CR2O3=K2CR2O4+CLO2

Question 1: Peroxide and copper ions form a complex, which should be a dark blue solution.

Question 2: It may be clo2, which is reddish-yellow gas; However, the title gives Cr2O3 catalysis, whether it is possible to generate CrO3, which is volatile and easy to decompose, and generates Cr2O3+O2, which is the process of catalysis.

1.Oxygen is produced because sodium peroxide reacts with water to produce oxygen.

2.Chlorine, because potassium chloride is reducible, will react with oxidizing Cr2O3 to form Cl2

I only know one ha, I don't know if it's right. I only have a junior high school level, and I'm smiling.

Produces a gas that rekindles the Martian wood strips, producing a blue precipitate.

Orange gas ......Cl-CR complex vapor?

There is no need to be too low-key, if the whole school doesn't even dare to think about it, it will make the school leaders very faceless, and low-key is not without self-confidence.

Do a good job and get in.

Keep a low profile, just say a general one, and leave a way back.

I want you to be pressured to be motivated, no matter what you do. Just go to the army, no one will force you, you will not advance.

It's true to be low-key, put the position too high, and accidentally fall down, those people probably don't know what to look at in their eyes.

Just want to say, don't put too much pressure on yourself.

Keep a low profile and just be yourself!

You are talented, speak modestly.

Take a local champion, and then go to Lanxiang.

Indeed, there are many people who can drive now, and 100,000 people in Suzhou alone get a driver's license every year. There is nothing to take a driver's license without a test, but in the future economic development, cars will become more and more common, it is recommended to take a test if you have time, and the test is relatively simple. Registration-theory test-pile test-road test, the end of the issuance of certificates, C1 certificate within 6 years of exemption, is also more convenient.

Of course, you can't drive a motor vehicle without taking the test.

Of course, the enthusiasm of the whole people to learn to drive is very high, at least now there are a lot of young people learning to drive, like our driving school as soon as the summer vacation has a large number of high school graduates and college students who go home when they are released to sign up to learn to drive.

If you don't catch up with this excitement, at least the landlord himself is still sober-minded. Others are drunk and I wake up alone, let's just take the car. At least taking a taxi is much easier and cheaper than buying a car.

If this account is calculated, the landlord still has an economic mind.

Take the test early while you're young, and it's okay if you don't take the test.

It doesn't matter if you can do it or not, it depends on whether you can use it. Don't you regret it when you use it? It's not a bad thing to do it while you're young and have time.

As a math teacher, I give you the following advice: First, be confident! You're only in your first year of junior high school, and you've just started junior high school, so it's still too late, as long as you have a self-motivated heart.

Second, listen carefully to lectures and complete homework carefully. Third, buy a synchronous tutoring book and learn more, read more and practice more.

There are still more questions, especially representative ones, you must draw inferences from one case and find out the rules, as long as you grasp this, you can understand the mystery of all changes.

Listen well in class, review after class, and then practice. Mathematics prepares a correction book for the usual mistakes, writes it in this book, and reviews it every day. The first year of junior high school is still quite simple, give yourself more confidence, come on!

That's because you lack confidence, you lack fighting spirit, first of all, you must have this BS attitude. Second, if you know yourself and your opponent, you will not be defeated in a hundred battles. The third is to arm yourself, you can strengthen it if you lay a solid foundation, and even if you don't lay a solid foundation, you can strengthen it Fourth, when you rub it for a long time, you will become interested in them.

Do well in other subjects....If you score 110,90 in Chinese, English, history, etc., the average score is almost passable.

Dear students, I suggest that you must master the basic knowledge, so that you can not only reach the upper middle level in the high school entrance examination, but also make steady progress.

Since you asked this question, it means that you don't have much confidence in accounting. So, let's take the secretarial, the pass rate of the secretary in various regions is relatively high. Start revising, two weeks is enough.

Pay attention to diet and rest).

Whichever is the most helpful for finding a job is to take the test first, and if you prepare for two exams at the same time, it is very likely that both of them will fall into the pit, and you will take the other exam after one exam.

Come one by one, two together, your spirit can't concentrate, what if you haven't passed both at that time, concentrate your energy, break through one by one, that's still better.

Isn't accounting just a subject, what's so difficult?

Does secretarial work that? If you want to take the exam, you can take the accounting.