Solar energy is a huge clean energy, a lot of solar energy can be used up in the short term. Right or wrong?

Wrong! Wrong! The sun was inexhaustible.

Wrong, wrong, wrong! The sun is inexhaustible.

Wrong, wrong, wrong! The sun was inexhaustible.

The chemical bond in 2 mol hydrogen gas and 1 mol oxygen gas form 4 mol H-O bond. Why?

2Mol hydrogen gas and 1mol oxygen gas form 2mol H2O, so the chemical bond in 2mol hydrogen gas and 1mol oxygen gas form 4mol H-O bond

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1. Number of chemical bonds of SiO2, Si, CH4, P4? What is the number of chemical bonds of SiO2, Si, CH4 and P4? Please attach the necessary analysis...
2. A cuboid glass cylinder with a length of 40cmM, a width of 20cm and a height of 30cm (measured from the inside) is 18cm deep. Now, an iron ball is completely immersed in the water, and the water surface is raised to 25cm to obtain the volume of the iron ball.
3. A 40 cm long,20 cm wide,30 cm high (measured from the inside) rectangular glass tank with a water depth of 18 cm. Now an iron ball is completely immersed in the water and the water surface rises 25Cm, find the volume of iron ball A 40 cm long,20 cm wide,30 cm high (measured from inside) rectangular glass tank with a water depth of 18 cm. Now an iron ball is completely immersed in the water and the water surface rises 25Cm, find the volume of iron ball
4. In a glass cylinder 25cm long,20cm wide,22cm high, water depth 19cm, ready to put a square iron block with 10cm long edge into the water, will the water in the cylinder overflow? In a glass tank 25cm long,20cm wide,22cm high, water depth 19cm, ready to put a square iron block with 10cm long edge into the water, will the water in the tank overflow?
5. How many ways are there to make a cuboid out of 24 small cubes 1 cm long? Can you spell a cube? How many ways are there to make a cuboid out of 24 small cubes 1 cm long? Can you spell it into a cube?
6. What is the cylinder volume formula
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8. Calculation formula of cylinder volume? Who knows? Cylinder volume calculation formula? Who knows?
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11. What is Solar Clean Energy
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13. How to verify that the volume ratio of hydrogen to oxygen produced by electrolysis water is 2:1 Since we know that hydrogen and oxygen have different solubility in water, the volume ratio of hydrogen to oxygen will not be 2:1 at the beginning, when will the saturated volume ratio of oxygen in water be 2:1? How to verify that the volume ratio of hydrogen to oxygen produced by electrolysis water is 2:1 Because we know that hydrogen and oxygen have different solubility in water, the volume ratio of hydrogen to oxygen will not be 2:1, so when will the saturated volume ratio of oxygen in water be 2:1?
14. Medical needs 180 kg of oxygen, if the method of electrolytic water to make. Then how many kilograms of electrolytic water? How many kilograms of hydrogen can be obtained at the same time Medical needs 180 kg of oxygen, if the method of electrolytic water to make. Then how many kilogram of electrolytic water? How many kilograms of hydrogen can be obtained at the same time
15. Is there an arrow behind the chemical formula for hydrogen and oxygen produced in the chemical equation for electrolytic water?
16. Electrolytic water consumes energy, and hydrogen combustion releases energy. How do you understand the energy changes in chemical change? Why "21st century is hydrogen energy century "? I don't like answers copied from somewhere else.
17. What is electrolyzed water? What can be converted from electricity? What's electrolyzed water? What's the power?
18. Now it's said that hydrogen is the cleanest energy source, and electrolysis of water can also get hydrogen, so why no one does that
19. What is the potential of solar energy as a clean energy source?
20. When the water is electrolyzed, the mass ratio of hydrogen to oxygen always 1: When the water is electrolyzed, the mass ratio of hydrogen to oxygen is always 1: