Write the following expressions and symbols Preparation of oxygen by heating potassium permanganate Preparation of oxygen from hydrogen peroxide and manganese dioxide Preparation of oxygen by heating potassium chlorate and manganese dioxide Red phosphorus burns in the air The wire burns in oxygen Charcoal burns in the air

2kmno4 = = (heating) = = k2mno4 + MnO2 + O2 (gas symbol)
2h2o2 = 2H2O + O2 ↑ (MnO2 above equal sign)
MnO2 is a catalyst
2kclo3 = MnO2, heating = 2KCL + 3O2 ↑
Potassium chlorate = (manganese dioxide) = potassium chloride + oxygen
=It's a single arrow with manganese dioxide above and heating below
Phosphorus + oxygen = phosphorus pentoxide
4P + 5o2 = = (combustion) 2p2o5
Iron + oxygen -- (online write "ignite") Fe3O4
Carbon + oxygen → carbon dioxide
Incomplete combustion only carbon monoxide or carbon monoxide and carbon dioxide
Expression: carbon + oxygen → (ignition on arrow) carbon dioxide + carbon monoxide

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1. Write the chemical symbol expressions for the following reactions: Charcoal burns in oxygen—— Red phosphorus burns in air—— Sulfur burns in air—— 4 heating potassium permanganate to produce oxygen—— Heating mixture of potassium chlorate and manganese dioxide——
2. Write the chemical symbol expression of the following changes: (1) A dark red powder burns in oxygen and produces a lot of white smoke (2) A pale yellow powder burns in the air, giving off a faint pale blue flame (3) A silvery white metal burns in oxygen to give off a dazzling white light (4) A kind of black powder burns violently in oxygen and emits white light
3. How to calculate the inflation rate Assuming that the annual CPI is 3%, how much is the 8W after 35 years compared with the present?
4. Calculation of inflation rate Consider the impact of inflation in a two person economy: Bob is a soybean farmer and Rita is a rice farmer. They always consume the same amount of rice and soybeans. In 2008, soybeans cost $1 and rice $3 Suppose the price of soybeans is $2 and the price of rice is $4 in 2009. What is the inflation rate? Suppose the price of soybean is $2 and the price of rice is $1.50 in 2009. What is the inflation rate?
5. If an experiment has N equal possible results, and event a occurs when one of M results occurs, then the probability of event a occurrence P (a)=
6. Let the probability of event a be p = P (a). Now repeat the experiment n times independently, and try to find the probability of a appearing at least once
7. It is known that the probability of event a in a test is p (0
8. For the event with probability p, the probability of event occurrence > = k times in n independent repeated tests Probability p event, the probability of K times of event occurrence in n independent repeated tests P (x = k) = C (n, K) * P ^ k * (1-p) ^ (n-k), what function is convenient to calculate: the probability of event occurrence > = k times in n independent repeated tests
9. In one experiment, the probability of event a occurrence is p. in n independent repeated experiments, the probability of event a occurrence for odd number of times is calculated. [1 - (1-2p) ^ 2] / 2
10. The application scope of Bernoulli's probability formula PN (k) = CN ^ k * P ^ k * (1-p) ^ (n-k)
11. Use chemical symbols to write the symbolic expressions for the reactions of the following substances The wire burns in oxygen Heating potassium permanganate The ribbon burns in the air Charcoal burns in oxygen
12. Symbolic expressions for the following chemical reactions Carbonic acid is heated to carbon dioxide and water Copper reacts with oxygen to form copper oxide under heating condition Sodium chloride reacts with silver nitrate to form silver chloride and sodium nitrate
13. Emergency. What's the issuing rule of banknotes
14. What's the issuing rule of banknotes? Please be simple. Thank you
15. The issuing law of banknotes
16. The calculation of inflation rate and currency depreciation rate Is the rate of inflation the same as the rate of currency depreciation Last time I saw two questions in the political reference book, which involved these two concepts, but the algorithm was very different The current price of goods is 10 yuan. (1) Q: what's the price when the inflation rate is 20% Calculation: 10x (1 + 20%) = 12 (yuan) (2) What is the price when the devaluation rate is 20%? Calculation: 10 divided by (1 + 20%) equals 12.5 yuan Which is the right one? Or is that the way it is calculated I just don't understand why some use multiplication and some use division
17. Inflation rate depreciation rate appreciation rate Inflation rate = (current price - original price) / depreciation rate of current currency = (current price - original price) / current price formula meaning? Appreciation rate formula?
18. Is the inflation rate the same as the devaluation rate? What's the relationship? How to convert inflation and currency devaluation?
19. Why China's inflation rate is higher than the United States, but RMB appreciation against the dollar When the RMB exchange rate rises, China still has a surplus in international payments
20. The earth in 100 years?