spontaneous desire
Mining mines prone to spontaneous combustion and spontaneous combustion of coal seams
A series of fire prevention and extinguishing measures should be taken in mines that are prone to spontaneous combustion and spontaneous combustion coal seams. These measures include setting up observation stations or observation points for spontaneous combustion, arranging them in rock formations or coal seams that are not easy to spontaneously combust, adopting retreating mining, leaving no roof protection coal, etc. In addition, it was necessary to prepare a special design for mine fire prevention and extinguishing, and adopt technical means such as injecting mortar, injecting noble gas, spraying chemical inhibition agent, etc. to implement active prevention. The mine should also establish a natural combustion monitoring system to detect and discover changes in gas concentration and temperature in a timely manner, and carry out early warning and measures to improve and improve. Comprehensively consider the management of the goaf after mining, the fire prevention and extinguishing needs of the adjacent working faces and adjacent coal seams to ensure safe mining.
1 answer
2024-12-23 17:54
What are the best spontaneous stories?
A best spontaneous story could be a family picnic. The family wakes up one sunny morning and just decides to pack some food and head to the park. There, they start playing games, and then some stray dogs come over. Instead of being scared, they befriend the dogs and have a great time together. It was all unplanned but filled with so much joy and laughter.
1 answer
2024-11-03 05:23
Reverse spontaneous reaction conditions
For a chemical reaction, one could judge the spontaneous nature of the reaction by the Gibbs free energy (? G=? H-T? S). When AG>0, the reaction proceeded spontaneously in reverse.
1. ** Analysis from the perspective of the change in the change in the temperature (? H) and the change in the temperature (? S)**
- When a reaction that absorbs heat (Delta H>0) and reduces the entropies (Delta S<0), it must be a non-spontaneous reaction (forward), which is a reverse spontaneous reaction, because according to Delta G= Delta H-T Delta S, in this case, Delta G must be greater than 0.
- For the reaction of decreasing entropies (? S<0) with an exothermic reaction (? H<0), increasing the temperature will make the reaction reverse spontaneously, because it is necessary to ensure that? G>0 (from? G=? H-T? S, when? H<0,? S<0, increasing T will increase? G and make it greater than 0).
- For a reaction with an increase in entropies (? S>0) that is an encircling heat (? H>0), lowering the temperature will make the reaction reverse spontaneously, because it is necessary to ensure that? G>0 (from? G=? H-T? S, when? H>0,? S>0, a decrease in T will increase? G and make it greater than 0).
2. ** Analysis from the perspective of equilibrium constant (for a irreversible reaction)**
- If the equilibrium constant of a reaction is K, when the reaction quotient J>K, the reaction will proceed spontaneously in the opposite direction. The equilibrium constant K is related to the standard mole Gibbs free energy change of the reaction, which can be calculated by the formula, where R is the gas constant and T is the temperature. The expression of the reaction quotient J is similar to the equilibrium constant K, except that the concentration or partial pressure is the actual value of the reaction at a certain time. When J>K, the reaction proceeded spontaneously in the opposite direction according to the equation:
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1 answer
2026-09-28 18:37
What does spontaneous action mean?
Self-motivation refers to a situation that occurs naturally without being affected by external forces. As opposed to " self-awareness," it is an activity that people do not know or master objective laws. For example, in the absence of external coercion or guidance, the family committee decided to buy paint to renovate the classroom and let the parents share the cost, the villagers decided to collect fees from the people who went into the mountains to dig wild vegetables, and the animals interacted with the staff without any external special guidance.
1 answer
2026-07-15 08:52
g greater than 0 is a spontaneous reaction
According to the Gibbs free energy criterion, the reaction can proceed spontaneously if G<0, but not if G<0. Therefore, the reaction is not spontaneous when G>0.
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1 answer
2026-07-01 19:13
How to Write a Spontaneous Melodrama Christmas Story?
First, come up with a central idea. It could be something like a Christmas miracle for a poor family. Then, create characters with distinct personalities. Next, add some drama, like a family feud that gets resolved by Christmas. Don't overthink it, just let the story flow.
1 answer
2024-11-10 20:38
What makes a love story spontaneous and explosive?
Spontaneity in a love story can come from a chance encounter. For instance, if they meet in a hurry at an airport and then end up spending time together because of a flight delay. The explosive nature might be caused by a feeling of being understood deeply. When they start sharing their dreams and fears and find that the other person truly gets them, the love can explode into existence. It's like all the emotions have been bottled up and suddenly burst out when they meet the right person.
1 answer
2024-12-08 21:33
What are the key elements in a spontaneous ending of a story?
One key element is surprise. For example, in a mystery story, the culprit turns out to be the least suspected character, which makes the ending spontaneous. Another element could be simplicity. Sometimes, a story just ends without a big fuss, like a character finally making a simple choice that resolves all the internal conflicts.
3 answers
2024-12-06 06:10
Are spontaneous sex stories appropriate for public discussion?
No. Such topics are very private and not suitable for public discussion as they go against public moral and ethical norms.
3 answers
2024-11-07 01:56
Desire, desire, immortal path
The Immortal Path of Desire was a NP-level immortal cultivation novel written by Mu Muxin. The story was about Chu Ruoting's adventures after her rebirth. She used her senior brother and met many beautiful men. There were seven male leads in this novel, including the gentle senior brother, the sickly petite lunatic, the abstinent senior, the loyal dog assassin, the overbearing demon lord, the cunning evil cultivator, and the son of a clean freak. There were love and romance plots in the novel, but two of the male leads were not C. " The Way of Desire and Desire " was a passionate novel with 170 chapters and about 680,000 words.
1 answer
2024-12-27 05:01
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