Sulfur-containing H2SO4 acid (only used as reducing agent) reacts with KMnO4 that has been acidified with H2SO4, and H2SO4 sulfurous acid (used as acid donor and reducing agent) reacts with pure acid-free KMnO4 solution. Indirect gradually changed to: sulfur dioxide SlO2 reacts with potassium permanganate solution.
Possible reaction: Chlorine dissolves in liquid water to produce hydrochloric acid, hypochlorous acid and hypochlorous acid, and reacts with calcium hydroxide to produce calcium chloride and calcium hypochlorite respectively.
Calcium hypochlorite from 1 will react with the remaining hydrochloric acid. If the amount of hydrochloric acid is diluted. It will further produce: hypochlorous acid and calcium chloride. Another possibility is that. Raw calcium chloride and calcium hypochlorite react with concentrated hydrochloric acid generated in chlorine solution to generate calcium chloride, chlorine and water. In another case, chlorine gas is rapidly introduced into limewater to produce calcium chloride and calcium orthochlorate. If calcium chlorate is set, it will react with the remaining concentrated hydrochloric acid in chlorine water to generate calcium chloride, chlorine gas and water.
In short, excess chlorine reacts with lime slurry; Calcium chloride and hypochlorous acid are produced.
The reaction of chlorine with quicklime slurry also includes the following steps: 1 chlorine reacts with water to generate hydrochloric acid and hypochlorous acid, and then reacts with dried quicklime, and hydrogen ions in the acid are combined with oxygen atoms to generate calcium hypochlorite and calcium chloride. 2- chlorine
The gas first reacts with water to produce hydrochloric acid and hypochlorous acid. Dry quicklime can also react with water to produce calcium hydroxide. Then, hydrogen ions in the previously generated acid combine with hydroxide ions to form: calcium hypochlorite, calcium chloride and water.
By the sea? OgH sodium hydroxide, chlorine gas and hydrogen gas will be produced after electrolysis of seawater (rich in sodium chloride). Sodium hydroxide produced by electrolysis can be as follows: in seawater? The reaction of magnesium chloride, ferrous chloride, chlorine, aluminum, chlorine and copper: producing metal? Hydroxide is precipitated and filtered, and metal elements in seawater are extracted from it. Elements: and:: can remove other chloride impurities from brine. Chlorine produced by ionization reacts with water and sodium hydroxide to produce:: 84 sodium hypochlorite, and chlorine reacts with iodide in kelp? Purple iodine granules.
Can electrolytic chlorine be given? Seawater disinfection; Electrogenerated sodium alkali can also get some hydroxide precipitation, and then extract metals.
For free, you can also refer to the first try, try it on in the store and taste it! Intangible handicraft cultural heritage includes: musical instrument cutting technology.
Cutting and grinding technology of hanging paper. Acids with two atoms besides acids are called diacids. kill
Bacterial principle: Colloids converge and precipitate to denature protein and separate the cytoplasm wall.
Measure the height of the whole building: use trigonometric function for corner edge, measure the height distance of echo edge, and measure the time by throwing the ball at the top.
Breathing: pyruvate ch 3c ooh+ hydrogen ion Hˇ+ oxygen = = vinegar ch3cooh acid+water+carbon dioxide!
The pressure of infiltration sucks in a bottle of water, and the knowledge contained in the phenomena in life can be written into the composition.
Every vegetable market can be equipped with a bus stop, where you can buy food directly and then take a bus to your relatives. This is an argument: an image is like a feeling, but now it is obvious that you know the quality of this image and you remember how to consider it.
Don't install an umbrella shed when riding a bike. When driving. Department number? Eye hatred bag. Avoid. Debris flow landslide. The bottle is convex. Hu Jing, you can collect light.
In the temple, advocate. Save for me: to save. Money, washing dishes is convenient, and eating is more fragrant. Why does this screen just slide to the right? The ventilation box inside is just ... Starsky data, yes.
Kelp originally containing magnesium chloride, sodium bromide and disodium sulfate in the sea was burned. Iodide salts can be generated. seawater
When barium hydroxide is added to the mixture, insoluble white precipitates, namely magnesium hydroxide and barium sulfate, can be obtained and filtered. In the filtrate, Na? Co3 sodium carbonate. Can be generated. BaCO3 precipitation of barium carbonate. And ... Chlorination. After filtering and introducing chlorine, ① liquid bromine Br2, carbon dioxide and. Sodium chloride. Sodium chloride; After that, it is electrolyzed. Can be regenerated. Simple substance Na② sodium. And 1 chlorine Cl2 gas.
To produce pure salt.
It can also be prepared into saturated saline. Sodium hydroxide (3) NaOH is obtained by electrolyzing NaCll water saturated with salt! , which can be used to absorb the carbon dioxide CO2 (which can be used to make carbon surface alkali) produced by the reaction between the added surface soda ash and acidic HC∫, and then recover it to make ④ soda ash. Chlorine and lime milk can be used to make bleached rice.
Magnesium chloride can be obtained by adding salt HCl acid to precipitated magnesium hydroxide, and then magnesium Mg and chlorine gas can be obtained by melting electrolysis.
There are several places on the way where chlorine gas can be produced (halogen can be released).
The school uniform of No.3 Middle School in High-tech Zone is dark blue on the back and white on the side. There are steamed delicious foods on Yunnan-Myanmar Avenue (2) and Tuodong Street. Golden Eagle B on Mindong Road and Jiaosanqiao East both smell like grandma. There are nine bakeries in Block B of Golden Eagle in Mindong and Nanyue City Market in Xishan.
Some open-air platforms with rafters and flowers planted on the ground will water the flowers when it rains that day, but if the rainfall drops too much, the open-air platforms will accumulate water or even overflow, so telescopic fences should be installed around the platforms.
Some electronic induction monitoring faucets on the pool sometimes treat passing passengers or "water" columns as hands to be washed and always discharge the water column. For example, the toilet flash pool next to the ticket office in South Station.
In some restaurants, there is a kind of leftover "water" on the dining table.
It was taken away by the waiter and thrown away as unnecessary things. Such as Nanyue Eagle B Jiutianjia Store?
Carbon dioxide and hydrogen methane; Magnesium with strong metal activity and iodine with weak nonmetal are used to catalyze carbon dioxide and methane to produce carbon monoxide and hydrogen at high temperature.
Iodine and ammonia can catalyze the decomposition of water into hydrogen and oxygen.
922 _ _ x1ng1sh 51ng _ 516. Biochemical knowledge, avoiding mudslides and chasing for safe escape, no umbrellas when riding a bicycle, and fire caused by convex lens focusing. When planting trees, watering and removing carbon voluntarily, fasten the safety belt for the safety car, and do not overload due to inertia.
2304020250732,040220070504,0627200709 16。 Greenhouse gases carbon dioxide and hydrogen methane; Magnesium with strong metal activity and iodine with weak nonmetal are used at high temperature.
* * * Catalyzes carbon dioxide and methane into carbon monoxide COg and hydrogen Hr2.
Iodine Id2 and ammonia can catalyze the decomposition of water into hydrogen and oxygen.
Chess "chess"
Go, e4e5. Bc4c6.Q↗f3.e4.e6，Bb5Bb4。 ，c4。 C5. NC3Nf6 ... D4. D6, d5.e×d5c×d5. Betzlar Release Bureau
d4f5，c4N.f6，Nc3.g6，Nf3。 Bg7 .E4 Dutch Indian Abandonment Bureau! The content of x 1ngle 1sh5l0ng's answer under the title of the question.
Breathe pyruvate ch 3c oooh+ hydrogen ion Hˇ+ oxygen = = vinegar ch3coooh acid+water+carbon dioxide!
922__05 16
The pressure of infiltration sucks in a bottle of water, and the knowledge contained in the phenomena in life can be written into the composition.
Every vegetable market can have a bus stop, where you can buy food directly and then take a bus to your relatives. This is an argument: an image is like a feeling, but now it is suddenly expressed through the image, knowing the quality, which reminds me how to consider it.
Don't install an umbrella shed when riding a bike. When driving. Department number? Eye hatred bag. Avoid. Debris flow landslide. The bottle is convex. Hu Jing, you can collect light.
The temple advocates: save food for the sake of saving. Money, washing dishes is convenient, and eating is more fragrant.
Why does this screen just slide to the right? The ventilation box inside is just ... Starsky data, yes.
Kelp originally containing magnesium chloride, sodium bromide and disodium sulfate in the sea (the second batch of projects) was burned. Iodide salt can be produced.
Adding barium hydroxide to seawater can obtain insoluble white precipitates: magnesium hydroxide and barium sulfate, and then filter them. Na2Co3 sodium carbonate (recovered) was added to the filtrate. Can be generated. Barium carbonate precipitation. And ... Chlorination. Then filtering and introducing chlorine (chlorine cl? It can be exchanged with bromoochre and dissolved in water to form easy-to-use HrCl) to generate liquid bromine br? Carbon dioxide and sodium chloride. Sodium chloride; After that, it is electrolyzed. Can be regenerated. Simple sodium. And chlorine gas Cl2 gas. The obtained pure salt can also be made into saturated salt solution.
Sodium hydroxide NaOH is obtained by electrolysis with NaCl-saturated NaCll water, which can be used to absorb carbon dioxide CO2 (which can be used to make surface soda ash) produced by the reaction between added surface soda ash and acid, and recycle it to make soda ash. The precipitated magnesium hydroxide is added with salt HCl acid (which can be generated) to obtain magnesium chloride, and then magnesium Mg and chlorine gas are obtained by melt electrolysis. On the way, Cl2 chlorine can be produced in several places.
Some greenhouse gases emitted from outside will lead to global warming (greenhouse effect) and destroy ozone. It will decompose the ozone layer into oxygen, which will release several tons of heat and make the world warm (decomposition releases heat). The ozone layer is destroyed in this way, reducing the amount of absorbed ultraviolet rays and warming the world.
Ozone itself is also an air pollution gas and a greenhouse gas. Ozone itself will also bring about the greenhouse effect.
At some point, because most people did something wrong in that way, even if you didn't.
If you do such a wrong thing, others will think that you are going to do what most people often do.
Sketch: Degumming with adhesive tape with formaldehyde In order to prevent formaldehyde in furniture from spreading from the inside, press the button to turn on the light, press the button to search for another light, turn the key to open the door and search for another door key.
Take this pair of glasses and find another pair. Hand over the money you are looking for: find the lost money, connect to this network, and then bind to another network. The enzyme made in protein will decompose protein.
The objects used are of the same kind as (to be prevented or stopped) or (to be sought).
Physicochemical principle of traffic pavement positioning. The letter was coated with dilute sulfuric acid, boric acid, lemon juice and vinegar carboxylic acid and then baked. Or use phenolphthalein solution, and the decryption drug is soda water. Potassium thiocyanate is used, and ferric chloride is used as decryption agent. The letter was coated with starch water, and the secret medicine was iodophor. Or coated with caustic soda solution and decrypted with phenolphthalein or ferric chloride. Use chromium sulfate solution and decrypt with potassium chlorate. Bromate coating and iodophor decryption. Smear with sodium silicate or barium hydroxide, and break the secret with white vinegar. When stationery is coated with dilute sulfuric acid, aluminum powder, ferrous nitrate and barium hydroxide can break the secret.
When running the water column, you can see that there is no expanding liquid in some surrounding areas, but it is empty and dry. There is no water around the water column, it is dry.
21.` 8.04 'ˇ 922-x1ng1sh 510ng ˇ` 516. When the external pressure is constant; When the gas quantity is constant, the gas volume is directly proportional to the thermodynamic Kelvin temperature.
Success = self-confidence, concentration, in the process of trying-courage, seriousness, hard work, diligence, inspiration when trying.
First consider people's own characteristics, such as adaptability, and then consider people's psychological and external factors. Matching statistics, pairing statistics, combination statistics and combination statistics. Journey to the south, Hua Tian Cuo, our song.
Suddenly think of you, in my song, love returns. Rise; Twice, the key is, I know, Tang Tian's lyrics are colorful films, Lettgo, Deng's poems are white, and Jay Chou's white man-pink robe woman is showing her teeth.
Change the wrong lane and rush in the current direction. Red was picked in the middle of the intersection and washed away. This is the moon I want; Column "Moon" word: 1 hour I don't know the moon, it's called white. Life is like a dream, a bottle still has a month. On the third night of September, the dew is like a pearl and the moon is like a bow. The moon was bright in Qin dynasty, closed in Han dynasty, and the Long March did not return. 53)30 fame, dust, 8000 Li Yun and Moon. 6 bright moon surprises magpie, and the breeze cries at midnight. The forester doesn't know, except my comrade-in-arms Mingyue.
Eight bright moons, at this time, the full moon is at sea, and the horizon is * * * at this time. From now on, if you ride leisurely on the moon with crutches. Lock the door all night. ⑽' clearly reading Tianshan Mountain, in the boundless cloudy sea of clouds. 1 1 I'm worried about the bright moon. I'll follow you until Yelangxi.
How wide the world is and how close the trees are to heaven. How clear the moon is on the water! . In June+March, 65438, willow leaves were planted at the top of the tree, about after dusk. 14 Birds inhabit trees by the pool, and monks "knock" on the moon gate. 15 when is the moon in spring and autumn? The past has passed 16, and the moonlight is upstairs at Qingquan Stone in the pine forest. 17 Fishing and sleeping with Jiangfeng on a frosty night,
18 Smoke Cage Cold Water Moon Cage Sand Night Park Near Qinhuai Restaurant, 19 Stars came down from the clearing and the moon came running along the river. The spring tide connects the sea. Ping,. At sea, the bright moon is born in the tide. 2 1 In the bright moonlight, wild geese soar, Khan runs at night, the moon is like a mirror, and the sea clouds are like a palace.
In the autumn of the first half of Mount Emei, Pingqiang River reflected. Until, holding up my cup, I asked the bright moon to bring me my shadow and let the three of us. The tourists came back for half a month and knocked the chess pieces down in the snuff. Jiang Nanan spring breeze is green, when will the bright moon shine on me? In July, a bird scares the mountain and sometimes comes to the spring stream. The desert sand is like snow, and the Yanshan moon is like a hook.
When will there be a bright moon? Ask heaven for wine. The foot of my bed is shining with such bright light. Is it frosty already? . 365438+ October, the stars and birds fly south. 32. In the morning, she saw her hair cloud changing in the mirror. However, she bravely faced the cold of the moonlight with her evening song-Pengshan. 33. When the moon is absent, it is quiet at first. Will bow like a full moon,
Northwest plastic. The world is divided into three distinct nights, and the rogue Yangzhou. He knows that the dew will be frost tonight, and how bright the moonlight is at home! . The lake is in harmony with the autumn colors, and there is no wind mirror on the pool surface. "Village Residence" and "Wuyi Lane";
List the word "day":
1, the moon is far away from Tianshan Mountain, between the vast sea of clouds. Stay from the beginning, clean up the old mountains and rivers, and go to the sky. Day and night are as cool as water, lying and watching Vega. Four or eight stars come out of the sky, and rain comes before the mountain at three o'clock. The next day, the lotus leaves are infinitely blue, reflecting different colors of sunshine and flowers. When did the moon begin to appear? Ask heaven for wine. Two orioles are singing green willows, and a row of egrets is in the blue sky.
How close the wild "field" dwarf tree is to the bright moon in the water! . The north wind rolled up the white grass and scattered them, and the snow in August crossed the Tatar sky. ⑽ The sky is high and the clouds are light, and the geese flying in the south look forward to it. 1 1 Only the sky is above, without mountains and harmony. 12 The rain in Tianjie is crisp, but the grass color is far and near. One night, three people were longing for their hometown. Luo Yin) The bee is exhausted, and the rain has covered the residue.
13 on a frosty night. 14 in a sharp gale, there was a whimper of an ape from the vast sky, and Zhu Dangsha White Bird flew back. 15 Tianmen interrupted the opening of the Chu River, and Higashi Shimizu flowed to this time. The moon is held up like a mirror, and the sea clouds shine like palaces.
17 the clouds are light and the wind is light, and it is nearly noon. Birds in Tianshan 18 are extinct, and thousands of paths have no footprints.
19 dare not speak loudly, Gong Jing is too powerful. 20 flying down 3000 feet, people suspect that the Milky Way has been frozen for 9 days. 2 1 This song should only exist in the sky and has been heard several times in the world. 22 Liu Yuxi; In February, the grass grows and the warblers fly, and the willows on the embankment are drunk with spring smoke …
Three minutes is a moonlit night, and two minutes is a rogue or Yangzhou. However, as long as China keeps our friendship, heaven will remain our neighbor. Mochow has no bosom friend in the road ahead. Who doesn't know you in heaven? There are tens of millions of buildings in Ande, which makes all the poor people in the world very happy. 28. The wind comes and blows away, and the water in Wanghu Lake is like the sky.
For 29 days, even if it was cloudy and foggy, the Milky Way wanted to turn to Qian Fan dance, and it looked at the sky intently. 30. The incense array pervades Chang 'an, and the city is full of golden flowers. 3 1. Look northwest and shoot Sirius. 32. Mao Zedong's Yongmei is broken.
223040202500732,30402200703 18,3040220070504。 306272007080603, 30627200709 1603.2006080 1,20060922; ˇ20070328,200705 14。
Temple is still-refusing to get married can cross eggs, and advocating dieting can taste more and wash more. Refuse to cross the egg.
I originally advocated that a living image was in an emotional state, and I wanted to send the manuscript. Now I suddenly see the example of "knowing quality like an elephant", and I think of the reason why I have thought about it. Do things logically? Reason;
Originally, I wanted to talk about a social phenomenon, the situation of love, but I happened to see the essence through the phenomenon. I actually realized this truth yesterday, and I was just about to say it.
There are still some things and behaviors that can't just look at external superficial phenomena; You can also see the true nature inside. For example, I saw some boys and girls holding hands together, or maybe they were chasing Doby and grabbing things.
Seeing a student using a mobile phone on campus may also be intrinsic: if he wants to ask for leave, he should call the teacher with his mobile phone first.
Do things logically; List the words "month" and "day". It can be inferred that a correct attitude and thought are needed to evaluate a standardized class, q → p, the reaction rate of chlorine with lime slurry and the concentration of hydrochloric acid generated by residual chlorine and water. Some institutional agreements have two sides. Sometimes a suspected object or a suspect of a bad thing may have done it carelessly, and the person who did it is not necessarily a person who often fights, nor is it necessarily a person who is curious to try. Some indicators and scores cannot be judged by success or failure, and some institutional agreements have two sides, both advantages and disadvantages.
Sometimes a suspected object or a suspect of a bad thing may have done it carelessly, and the person who did it is not necessarily a person who often fights, nor is it necessarily a person who is curious to try. Some index scores cannot be judged by success or failure.
Before the rules, sometimes everyone needs to be treated unfairly. Sometimes, if you do something bad, the suspect you think may feel meaningless and should not do it.
The suspect who thinks the bad thing may have done it suddenly or unintentionally this time. You said you should think about such rules when you do something, but there are no rules at all! Sometimes a bad thing, people who may do it are not curious. The country creates and exhibits large-scale things, mainly not to enhance self-confidence. The standard quantitative conduct score of junior high school and senior high school should be called. : comprehensive deeds index score. The country's scientific and technological creation is not mainly to enhance the self-confidence of the people. Sometimes I remind you to consider the rules first, but there is no such rule!
Sometimes it will be deducted to persuade people not to do this, but others didn't mean it before! In fact, some violations are mainly caused by others. Sometimes the sun obeys Yin and the sun obeys Yang in schools. For example, although there are actions on the surface, there are other reasons inside.
The contradictions between schools and families today are as follows:
There are too many lucky money distributed during the Spring Festival, and students don't use it very much, resulting in contradictions.
The contradiction between the quantitative conduct score and the actual moral index of students, such as the contradiction between a student's bad moral character and "the conduct score obtained by participating in sports will make up for it" Violation of discipline, but not causing trouble, and the contradiction of low conduct scores. The contradiction between the experimental exploration in schools and the difficulty in obtaining materials. The contradiction between taking self-study classes and not having much time to ask homework. The contradiction between students' poverty and their inability to pay for books. In order to earn enough points on the educational examination platform, everyone goes to watch some videos and the contradiction between them and the interference of the sound network.
Idea: For a tool, if most people do some bad things with this tool, even if you do a good thing with this tool, it will be rejected by others. For the performance of a certain situation, if most people's performance is caused by something popular, then even if your performance is not caused by it, people will mistake it for a popular style. 0 1.22 In some institutional agreements, there are advantages and disadvantages, and sometimes an object of suspicion or a person suspected of doing something bad may accidentally do it.
And the people who have done it are not necessarily people who often fight, nor are they necessarily people who are curious to try. Some index scores cannot be judged by success or failure.
Before the rules, sometimes everyone needs to be treated unfairly. Sometimes, the suspect you think may feel meaningless and useless, and there is no causal relationship, so you should not do it. If there is a causal link, do it!
The suspect who thinks the bad thing may have done it suddenly or unintentionally this time. You said you should think about such rules when you do something, but there are no rules at all!
Sometimes a bad thing, people who may do it are not curious. The country creates and exhibits large-scale things, mainly not to enhance self-confidence. The quantitative conduct scores of junior high school and senior high school should be called. : the score of the comprehensive index of deeds. The country's scientific and technological creation is not mainly to enhance the self-confidence of the people. Sometimes I remind you to consider the rules first, but there is no such rule!
Sometimes it will be deducted to persuade people not to do this, but others didn't mean it before! In fact, some violations are mainly caused by others. Sometimes the sun obeys Yin and the sun obeys Yang in schools. For example, although there are actions on the surface, there are other reasons inside.
The contradictions between schools and families today are as follows:
There are too many lucky money distributed during the Spring Festival, and students don't use it very much, resulting in contradictions.
The contradiction between the quantitative conduct score and the actual moral index of students, such as the contradiction between a student's bad moral character and "the conduct score obtained by participating in sports will make up for it" Violation of discipline, but not causing trouble, and the contradiction of low conduct scores. The contradiction between the experimental exploration in schools and the difficulty in obtaining materials.
The contradiction between taking self-study classes and not having much time to ask homework. The contradiction between students' poverty and their inability to pay for books. In order to earn enough points on the educational examination platform, everyone goes to watch some videos and the contradiction between them and the interference of the sound network.
Idea: For a tool, if most people do some bad things with this tool, even if you do a good thing with this tool, it will be rejected by others.
For the performance of a certain situation, if most people's performance is caused by something popular, then even if your performance is not caused by it, people will mistake it for a popular style. Physical examination paper. When a teacher tries to stop students from doing something, some students may say that it has no causal relationship and no influence, and they won't do it at all. But sometimes it may be because something needs to be done.
He also said that when you do something, you should consider the rules, but sometimes there are no rules at all! There may be a phenomenon that Yang obeys Yin and Yin obeys Yang in school, and some bad things are suspected.
Objects may also be completed suddenly and unintentionally. There is also a great possibility that some things that have been deducted are: things that are suddenly done carelessly are not easy to avoid.
Some things in life, such as buying things for others, are a bit uneconomical. Sometimes you can ask not only one person, but also everyone.
Personal conduct in high school and junior high school cannot be judged by success or failure. When some students are prevented from doing a certain behavior, some students may say: this practice has no causal relationship with other practices, they will not do it, but sometimes it may be necessary to do it because of something.
You can set the advanced class as Class A and the parallel class as Class B ... Sometimes personal conduct scores can't be deducted according to the class, because some people don't want to hack the class. Acids with two atoms besides acids are called diacids.
Carbon monoxide in automobile exhaust can be used for repeated combustion. The contradiction between population and cultivated land in agriculture is: (the contradiction between agricultural development and planting crops [] and [(rural population mobility and urbanization) and (shrinking cultivated land area)]. There is a contradiction between the development of agricultural crops and the population in rural areas (relocation, urbanization, shrinking fields).
Getting poor households out of poverty will not only make the poor rich, but also make the boss earn more money. Advocate more work and more pay.
The date of birth in some people's ID numbers is the lunar calendar. Our Muslim canteen not only takes care of the local Muslims, but also delivers meals to Muslims who have moved from other places. Good brothers convenience store in Fuxian North Road and Nieer East Road? Convenience stores opened by giant pandas often have no customers.
The campaign slogan is: active and tenacious, striving for progress, surpassing ideals and high morale. Challenge yourself, break through the limit, and never give up until the end. The urban area north of Sheda Road is called Ganbei District, the area south of Sheda Road is called Gannan District, and the northern urban area is changed to Beixi District.
The word "Miao Lei" includes the word "Miao Lei Pan". Geography can be divided into space science, land science, underground science, topography and plate science. The words on the blackboard will be erased, and a pulley block will be installed beside the building. Rainfall is related to airflow and sunspot movement. M1= [(v1+v2) (n× m2)-(m2× v2]/v1,c solubility = (m \ m)//(M solution1000p/). Hydrogen cars can add sulfur to hydrogen tanks. Sketch: press the button to turn on the light to search for another light, and turn the key to open the door to search for another key. Pay more attention to habits rather than quality and morality. The relative molecular mass of air: [(78% v/VM) × 28+(21%v/VM) × 32+(0.032% v/VM) × 44]/[(78% v/VM)+21%v.
. By default, the open space next to the garbage bin is the recycling station, and the chemistry department of senior two studies the solubility of insoluble substances, weak acid electrodialysis,
CbO2 synthetic starch can win the Nobel Prize in chemistry. It is also mentioned in the appendix after the third grade chemistry textbook that CbO2 and water take apart its atoms and combine them into glucose.
There is a common phenomenon in life that there is a physical and chemical knowledge principle. To improve the ability of cold resistance and drought resistance, phosphorus, PH and bound water are needed, which is a new way.
The hydrogen-burning spare tank of a hydrogen-fueled automobile can be equipped with sodium-aluminum alloy, convex lens, white phosphorus, sulfur paste, zirconium-chromium-manganese hydrogen storage alloy and free hydrogen.