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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.
No matter how much you give, you'll back
No matter how much you give, you will pay back
What you give, you pay.
The basic reaction types of hydrogen combustion to produce water and electrolytic water are the same Are you right? Please explain why. Are both chemical changes?
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RELATED INFORMATIONS
- 1. Is there an arrow behind the chemical formula for hydrogen and oxygen produced in the chemical equation for electrolytic water?
- 2. 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
- 3. 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?
- 4. Electrolytic water oxygen and hydrogen generation instructions: A, this is a chemical change. B This is a physical change. C Water contains oxygen and hydrogen D Water consists of hydrogen and oxygen Specification of oxygen and hydrogen generated from electrolytic water: A, this is a chemical change. B This is a physical change. C Water contains oxygen and hydrogen D Water consists of hydrogen and oxygen
- 5. What is Solar Clean Energy
- 6. Solar energy is a huge clean energy, a lot of solar energy can be used up in the short term. Right or wrong?
- 7. 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...
- 8. 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.
- 9. 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
- 10. 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?
- 11. What is electrolyzed water? What can be converted from electricity? What's electrolyzed water? What's the power?
- 12. 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
- 13. What is the potential of solar energy as a clean energy source?
- 14. 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:
- 15. Suppose 1,8 grams of water is electrolyzed and the mass of oxygen and hydrogen produced is calculated from the chemical equation for electrolyzed water.
- 16. Why, from the point of view of energy conservation, is it not advisable to use hydrogen produced by electrolytic water as a conventional energy source? Is it because you need a lot of power?
- 17. Is the quality of hydrogen and oxygen produced by electrolysis of water the same as that of the original water
- 18. To obtain 1 mol of hydrogen from electrolyzed water, how much g of water is needed? How many grams of oxygen are produced at the same time To obtain 1 mol of hydrogen gas from electrolyzed water, ask what mass of electrolyzed water is required? How many grams of oxygen are produced at the same time
- 19. The number of oxygen atoms contained in 0.2mol oxygen gas and () mol water is equal
- 20. Why the heat released from the complete combustion of 2 mol hydrogen gas into water vapor is less than that less than 572 J/mol Why the heat released from the complete combustion of 2 mol hydrogen gas is less than that of water, less than 572 J/mol