Chemical equation of phosphorus combustion in air

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• 1. Write the chemical equation for the combustion of carbon, sulfur, phosphorus, and iron in oxygen! Write the chemical equation for the combustion of carbon, sulfur, phosphorus, and iron in oxygen!
• 2. What is the effect of carbon content on the mechanical properties of steel? What is the effect of Mn, Si, S, P on the properties of steel?
• 3. What is the effect of carbon content on the properties of steel?
• 4. What is the effect of carbon, manganese, sulfur and phosphorus on the mechanical properties of carbon structural steel
• 5. The bleaching principle of Na2O2(sodium peroxide)? And the bleaching principle of sodium hypochlorite? The bleaching principle of Na2O2? And the bleaching principle of sodium hypochlorite?
• 6. To prepare 500 mL of 0.5 mol copper sulfate solution,62.5 g of gallstone is required. To prepare 500 mL of 0.5 mol copper sulfate solution,62.5 g ofiliary alum is required.
• 7. Is the freezing point of sugar water and brine the same as that of pure water? Why? Design of experimental verification Is the freezing point of sugar water and salt water the same as that of pure water? Why? Design an experiment to verify
• 8. When H2O2 is introduced into acidified potassium permanganate solution, potassium permanganate fades. What is the ion equation?
• 9. (NH4)2SO4 solution and NaOH solution ion equation
• 10. The sign expression for oxygen production from potassium permanganate is ______; the sign expression for oxygen production from hydrogen peroxide is ______.
• 11. Chemical composition content of Q235B carbon steel plate Content range of C, Mn, Si, P and S
• 12. What is the effect of carbon, sulfur and phosphorus on the properties of steel?
• 13. Is it that the higher the carbon content of steel, the higher the strength and hardness, the lower the toughness and plasticity
• 14. The strength, hardness, plasticity and toughness of 45 steel, T8 steel and T12 steel were compared under annealing condition. I hope you can answer my question as soon as possible!
• 15. What is the carbon content of Q235 steel?
• 16. Effect of Carbon Content on Room Temperature Equilibrium Microstructure of Fe-C Alloy
• 17. What is the effect of carbon content on iron-carbon alloys?
• 18. Why in iron-carbon alloy, when the carbon content exceeds 0.8%, the hardness of steel increases continuously, but the strength decreases obviously Why in iron-carbon alloys, when the carbon content exceeds 0.8%, the hardness of the steel continues to increase the strength decreases obviously
• 19. Approximate Regularity of Influence of Carbon Content on Microstructure and Properties of Fe-C Alloy
• 20. What material conforms to this chemical composition: carbon 0.03%, silicon 0.05%, sulfur 0.006%, aluminum 0.037%, manganese 0.23%, phosphorus 0.016%