Coal is an important chemical raw material. Using coal as fuel is not only a great waste, but also because coal contains sulfur, the sulfur dioxide generated after combustion will cause air pollution. 1% of sulfur-containing coal is directly burned and discharged without treatment. Four tons of sulfur dioxide gas is discharged into the atmosphere every day. How many tons of coal is burned in this plant every day

Coal is an important chemical raw material. Using coal as fuel is not only a great waste, but also because coal contains sulfur, the sulfur dioxide generated after combustion will cause air pollution. 1% of sulfur-containing coal is directly burned and discharged without treatment. Four tons of sulfur dioxide gas is discharged into the atmosphere every day. How many tons of coal is burned in this plant every day

Because s + O &; = so &;
So 4000 / 64 × 32 / 0.01 = 200000 kg = 200 t

Coal is an important chemical raw material. Using coal as raw material is not only a great waste, but also the sulfur contained in solid coal will generate sulfur dioxide gas when burning, which is an important reason for environmental pollution and acid rain. A factory uses 1% sulfur-containing coal to directly burn and discharge 4 tons of sulfur dioxide gas into the atmosphere. How many tons of sulfur dioxide gas does the factory burn in a day?

The quality of sulfur element in 4 tons of sulfur dioxide gas is: 4T × 3232 + 16 × 2 × 100% = 2T. According to the title, the sulfur content in the coal is 1%, so the quality of burning the coal in one day is 2T ／ 1% = 200t

Coal is an important chemical raw material. Using coal as raw material is not only a great waste, but also the sulfur contained in solid coal when burning
Be quick@

It can produce toxic compounds, pollute the environment and harm people

Does the substance generated by burning carbon dioxide necessarily contain carbon
1. The material containing carbon element will produce carbon dioxide when burning, so the material producing carbon dioxide must contain carbon element
2. Chemical reaction will produce new substances, so it must be chemical reaction that will produce new substances
Choose the wrong one of these two sentences,
Limited to the concept of textbooks in junior high school,

1. Carbon dioxide will be generated when the material containing carbon element is burned. Incorrect, it may not be CO2, it may also be Co,
So the material that produces carbon dioxide must contain carbon. Right, the element is conserved
incorrect
2. Chemical reaction will produce new substances, so it must be chemical reaction that will produce new substances
Right, the concept of chemical reaction

The deposit ratio of Party A and Party B is 1:5. After Party B gives Party A 1 yuan, the ratio of Party A and Party B is 1:4?

Let a have X Yuan, and B have 5x yuan,
(1+x)*4=5x-1
4+4x=5x-1
x=5
So a originally had 5 yuan, B originally had 5 * 5 = 25 yuan

A. B's original money was six times and five times that of C. later, a earned 180 yuan and B 30 yuan. At this time, a's money was 1.5 times that of B. how many yuan did a, B and C have?

Let C have X elements
Then a used to be 6x yuan, B used to be 5x yuan
6X+180＝(5X+30）×1.5
X＝90
A=6X=540
B=5X=450

The original money of Party A and Party B is 6 times and 5 times that of Party C respectively. Later, Party A earned 180 yuan. Z earned 30 yuan. The money of Party A is 1.5 times that of Party B. how much money did Party A, Party B and Party C have?

Suppose that C has x yuan, then a has 6x yuan and B has 5x yuan
6x+180=(5x+30)×1.5
The solution is: x = 270
So: (6 + 5 + 1) × 270 = 3240 (yuan)
It turns out that a, B and C have a total of 3240 yuan

There are two pigs of a and B. three fourths of the price of a is equal to four fifths of the price of B. five sixths of the price of a is eight and one third yuan less than that of B. what are the prices of a and B?

Suppose that the price of pig a is X Yuan and that of pig B is y yuan
3/4x=4/5y
5 / 6x + 8 and 1 / 3 = y
x= 88/9 y=44/3
So the price of pig a is 88 / 9 yuan, and that of pig B is 44 / 3 yuan

Party A and Party B have a total of 750 yuan. It is known that the sum of 1 / 3 of a's money and 3 / 5 of B's is 330 yuan. How much more is a than B?

Let a have X Yuan, then B have 750-x yuan
x/3+3(750-x)/5=330
5x+9(750-x)=330*15
5x+6750-9x=4950
4x=1800
x=450
Then B has 750-450 = 300
A is 450-300 more than B = 150 yuan

The total unit price of a and B is 40 yuan. If the price of a increases by 1 / 3 and that of B by 1 / 5, the total unit price is 52 yuan. What are the unit prices of a and B?

Use the equation to solve
Let the unit price of a be x and the unit price of B be y, then x + y = 40 and (1 + 1 / 3) x + (1 + 1 / 5) y = 52