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In Science

We use "entropy of the universe" or Suniv. as a phrase that means the sum of all the entropy. This is useful when we describe the spontaneity of a reaction - a reaction will b…e spontaneous when Suniv. increases. The total entropy of the Universe is clearly increasing but the theory of the entropic death remain not sure. (MORE)

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In Chemistry

I am not sure whether you refer to delta S (change in entropy) or entropy itself. So I'll answer for both. For S (entropy), which is defined by the function S=kln(omega), wher…e k is Boltzmann's constant and omega is the number of microstates corresponding to a given state, the answer is no. Why? Omega (the number of microstates possible for a certain state) can never be smaller than one. Since Boltzmann's constant is a positive number and ln(omega) will always be greater or equal to zero, entropy will never be negative. However, when calculating delta S (change in entropy in a thermodynamic process), yes entropy can be negative. Remember entropy is essentially the state of disorder of a system since (on a macroscopic level) the natural progression of the world is from order to disorder. (For example, there are more ways to have a messy room than to have an impeccable, neat room). For the change in entropy to be negative just think of it in terms of the room analogy: initially, it was messy, but then it got neater. The state of disorder of things was lessened. Applying this to a chemistry example: CO 2 (g)--> CO 2 (s) An element/compound in a gaseous state always has a greater state of entropy (gaseous molecules are more free to move). However, an element/compound in a solid state has a smaller state of entropy because molecules in a solid are less free to move. Smaller state of entropy - greater state of entropy=negative entropy (MORE)

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In Science

Entropy is a measure of the amount of disorder a system has. More accurately the amount of work that can be extracted from a system. The more entropy a system has the le…ss work that can be done. 1kg of steam at 500 degrees can do lots more work than a kilo of warm water. Entropy always increases in a closed system. Entropy is why everything eventually breaks down. (MORE)

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In Psychology

Entropy is the inclination for things to increase their level of disorder. eg. If you buy a puzzle in a box and you shake it really hard the pieces become more d…isorganized, near fall back into their proper place. APEX ANSWER: Entropy measures the disorder in a system (MORE)

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In Physics

You've likely seen this, but: THERE IS AS YET INSUFFICIENT DATA FOR A MEANINGFUL ANSWER. We simply don't know enough about the source of energy to know. Were an absolu…te insulator (a material that lets absolutely no energy through), and shaped into a ball, then entropy could hypothetically be resisted. However, this would not REVERSE entropy, as no new energy could be brought in without opening the sphere and letting the contents escape. What many people don't understand is that there is no actual true entropy. When energy leaves something, it doesn't cease to exist, but simply goes to a spot that we can't use it. The disorganization of all energy, the placing of each particle apart and out-of-reach, is what commonly thought of entropy actually is. With the theory that the (our) universe is closed, and nothing escapes, the scattered energy could be floating around, occasionally meeting, and possibly bouncing off the borders of the universe. EVENTUALLY, which could be in an unimaginable amount of time (Literally unimaginable. You can conceive of the inconceivability , but not the actual number.), the particles of energy and whatnot could eventually meet again in sufficient numbers to be worth something, hopefully another Big Bang. With the theory of an open universe, there are two different (relevant) possibilities. The first is that there are infinitely more BB's (Big Bangs) all over our plane of existence, that our BB was not the only one, and that the expanding matter of each can pass that of other BB's. Should this be the case, there is an infinite amount of energy in existence, and more of anything can EVENTUALLY be encountered again. If, however, we are the only Big Bang, and there is no other source of anything, we're theoretically screwed. (Not to worry, though: It's actually more likely that there are more Big Bangs than that we're all alone.) Of course, in any of these, there is the possibility that our Universe's (from our Big Bang) gravity will be enough to catch the far-flung galaxies and draw them back in for "The Big Crunch", when everything gets squished into one point again, and hopefully Banged again. I believe that the last person to answer this question probably had some understanding of different universe theories, but didn't quite get what entropy was. ------ In general entropy is the decay of a system from order to chaos. It can be reversed, locally. However to do so requires work, and energy, which is obtained by taking a different ordered system and reducing it further towards chaos. So while I may reverse entropy in my room (it is cleaner) I've increased the entropy in my body, in excess of what I've cleaned up. (MORE)

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In Physics

ENTHALPHY: Is the energy content of a process (chemical, thermodynamic, mechanical, etc) that can be recovered. It is also described as useful energy. ENTROPY: Is the energy… content of a process (chemical, thermodynamic, mechanical, etc) that CAN NOT be recovered. It is also described as chaos. (MORE)

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In Biology

There are macroscopic and microscopic examples of increasing entropy, all of which are also examples of increasing disorder and randomness. Macroscopic: Watch yourself get ol…d. Break something. Watch your tea get cold. In the study of thermodynamics and quantitative science, the examples usually involve the rearrangements of atoms and molecules inside matter and the change in entropy is given by dS=dQ/T. A good example is the melting of an ice cube. dQ is the energy (heat) it takes to melt the ice cube. (dQ=3334 Jules per gram or about 80 calories per gram). T is the absolute temperature of melting ice, usually 273 K. Now, this is not the whole story since the volume of the water and ice are different in normal daily life, and there are complexities of thermodynamics that are being skipped. Even so, ice melts, randomness of water molecules increases and entropy of the water increases. Another microscopic example can be given when you create magnetism in a metal like iron and the internal organization is made more organized and entropy of the iron decreases. (Or course, total entropy always increases, so entropy of the magnetization creating process must increase or it must give off heat.) (MORE)

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In Science

Entropy says that any closed system will become more disordered over time. If there are only a small number of parts in the system (say 3), then there is 1 correct order… (123), and 5 incorrect orders (132, 213, 231, 312, 321). If the system randomly changes order, there's still a good chance of it changing from a disordered state to an ordered state. That would make entropy wrong. However, in a system with billions of variables, the chance of returning to an ordered state is negligible. In a system like this, you can count on the rule of entropy. That's why entropy depends on the amount of parts in a system. (MORE)

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In Uncategorized

the 5s because it has better service but it dosent have diffrent colrs just silver gold and black

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20c + 5 = 5c + 65 Divide through by 5: 4c + 1 = c + 13 Subtract c from both sides: 3c + 1 = 13 Subtract 1 from both sides: 3c = 12 Divide both sides by 3: c = 4