What are the components of a chemical reaction?
A chemical reaction is a process that always results in the interconversion of chemical substances. The substance or substances initially involved in a chemical reaction are called reactants. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which are in general different from the reactants. Classically, chemical reactions encompass changes that strictly involve the motion of electrons in the forming and breaking of chemical bonds, although the general concept of a chemical reaction, in particular the notion of a chemical equation, is applicable to transformations of elementary particles, as well as nuclear reactions. Save Lynx
What are the components of a chemical reaction?
In a chemical reaction you first start with the reactants. The reactants are then combined or interact to form the products. All atoms are conserved in a chemical reaction.
What are the components of a chemical reaction? What is meant by a reversible reaction? What is equilibrium in regards to chemical reactions?
Reactants and products are the components of a chemical reaction.A reversible reaction is a reaction which can take place in the opposite direction, as the reactants react to form products, the products also reacts to form back the reactants.Chemical equilibrium is a state in which equal amount of products and reactants are present in a chemical reaction, when the time rate of the forward reaction is equal to that of the backward reaction.
Which subject is the best: Physics, Chemistry or Math?
It's all depends upon personal taste, teacher who teach them and many others factors.from middle school physics was my fav subject,and maths the most hated till class 10th.when I was in fiitjee Patna center in class 11; I missed starting one month of my classes due to some personal reasons,because of that I missed base chapter of physics like laws of motion ,circular motion etc,and I started directly from chapter work energy power,oh lord ,I was not able to catch up with the batch,teacher was also not coperative,so I started suffering in that subject,soon I lost interest in physics,for me jee physics became like Chinese movie with no subtitles.as a result I didn't qualify jee in first attempt.it hurt my ego,how the hell a subject which I loved the most can pull me so down.in I gap year I stated my self study from book like dc pandey,that helped me lot to buid my base which initially I was missing,then I went to kota and joined vibrant academy.there I meet teacher like abhishek Jain and niraj shah ,there unique method of teaching reignited my interest back in physics,soon I was among the top student in my batch in physics.many students stated coming to me whenever they have doubt.it made feel great how much my condition had changed in just one year.sadly I was very poor in maths that was the reason why I didn't got a descent rank in jee.I know most of you hate the physics,one of the main reason is lack of imagination,to study the physics you have to feel it.Just opposite was case with my friend Rakesh whom I meet him in kota,he was very found of maths but he hated the physics most.he got score of 150 in jee mains from which he score 100+ only in maths ,which is very rare.
As a man, what insecurities do you often see in women that you couldn't care less about?
The DressThere I am: sitting down stairs engrossed in the documentary "Air Guitar nation", when the missus rushes down the stairs and positions herself right in front of the TV blocking my view of the screen.Some serious shit is about to go down!She demands to know "Does this dress make my bum look big?"My first thought: Is this some new technologically advanced dress that has shape shifting abilities, the ability to expand the bottom (whoa)?She keeps peeking over her shoulder, at her bottom while sticking it out to either side-it’s like her butt is playing 'hide and seek' with her!Me: "Well if you stand still- I can tell you!"You must start with a firm statement, indicates that you're going to take this issue seriously.Her: "Okay, does it look big?"Now she’s eagerly waiting for my response (pressure!). Okay. Analyse this shit, what did you say last time? Don't contradict yourself, she's like a human memory bank combined with lie detector-she’ll pick up any hint of BS.Her: "C'mon hurry up and tell me!"I lower my brows and narrow my eyes. Got to pretend like I'm doing some serious analysis here, when I'm really just trying to buy some more time to think of something that won't get me into trouble!Me: "Yeah. Hmmm… looks good!"Her: “What does that mean? Does it look big?"Geez, it looks the same as it always does. What can I say? Maybe she wants me to say yes. Kim Kardashian has made big butts trendy. No. Can’t say yes, it’s too risky!Me: "No. Butt looks good. Not any bigger than usual. I mean, you can see it’s there, but not too much."She: "What do you mean you can see it there?"God save me! When did her butt become a lethal weapon that she needs to conceal it? When did this even become a talking point…? “Judy (random name) made a fantastic cheese cake for the dinner party, but I tell you, her butt was looking huuugh!” NEVER!Me: "Well. I can see it’s there. It’s good, cos no one likes girls with no butts!"Now she's giving me a suspicious look. Oh shit she’s picking up on the bullshit. Keep cool bro. don't fold it in.Me: "You know, it accentuates the curves, golden ratio and all that. Good proportions, nice shadowing...very juicy"“Very juicy!” WTF! Where did that come from?Her: "You talk so much rubbish. You’re useless. There is no point asking you, going to face-time my sister"Off she goes, back up the stairs. She was probably going to ask her sister anyway.
What is entropy in thermodynamics?
The term entropy was first used by Rudolf Clausius to state the second law of thermodynamics. Though entropy is a simple term, many people find it difficult to understand its exact meaning. Let us see what is entropy, and its relation to second law of thermodynamics.There are three important E’s in the study of the thermodynamics: energy, equilibrium and entropy. The word entropy was first used by Rudolf Clausius. It is taken from the Greek word ‘tropee’ which means transformation. Entropy is the extensive property of the system (depends on the mass of the system) and its unit of measurement is J/K (Joule per degree Kelvin). Entropy is heat or energy change per degree Kelvin temperature. Entropy is denoted by ‘S’, while specific entropy is denoted by ‘s’ in all mathematical calculations.The property ‘entropy’ plays central role in the study of thermodynamics and it has been introduced via the concept of the working of the heat engine. The subject matter of entropy has been developed due to invaluable contributions from Sadi Carnot, James Prescott Joule, William Thomson (Lord Kelvin), Rudolf Clausius, Max Planck and others.The entropy of the system is not measured in absolute terms; rather it is measured in relative terms. The entropy of the system is measured in terms of the changes the system has undergone from the previous state to the final state. Thus the entropy is always measured as the change in entropy of the system denoted by ∆S and not merely S. If at all it is necessary to measure the value of the entropy at a particular state of the system, then zero value of entropy is assigned to the previous chosen state of the system.Hope it helps.
What is the best advice you've received?
One of my ex-girlfriends cheated on me once. She apparently made out with a really fucking ugly dude.I was filled with rage for a long, long time after that.I was torn though.I felt so angry, yet I didn’t want to lose her.I took solace in mostly seeking validation from all my dude friends. I would just drink with them and bitch about what a fucking cunt she was and how I’d supposedly seek the ugly guy out and end his life.Guys being guys, all my friends agreed with me.“Yeah! Kick his fucking ass!”“She ain’t worth it man. Fuck her. She’s a cunt.”Stuff like that. I felt better listening to all of that. I thought it was perfectly normal for any guy to react that way.And then one day, I told the story to a friend, who used to be my boss before.He straight up replied me, “Well what she did was wrong, but it’s not a death sentence offence.”Right there and then, for the first time after a while, I managed to cool down and stop feeling so pissed off.So here’s the thing: I think that a lot of us operate by an extreme ‘all or nothing’ mentality. This is when we go all out to feel a certain way only just because something happened outside a certain way.If we’re wronged, we feel all the anger we want just because we have the right to.If we’re hurt, we cry non-stop because we have the right to be sad.If we’re frustrated, we complain without letting up because the problem is still there.I don’t want to be cliched and say that my friend taught me forgiveness. This is not about forgiveness to me.This is about looking deep inside yourself and knowing that there’s a possibility of you thinking, feeling and doing something completely out of the ordinary.You don’t NEED to feel a certain way just because others are doing the same or that the situation calls for it.You can just feel something in-between instead you know?And then from there, you call the shots. You can go ahead and forgive, run away, chill out or just forget about the whole thing.What I was basically doing was judging my girlfriend then.But I was also judging myself. I was sentencing all my emotions to death, to extremes.Don’t judge yourself. You can do a lot better.You deserve to be happy yo. Get my free book: 12 Things Happy People Don’t Give a Fuck About.
What are some amazing pictures one has to see twice to understand?
The Collection 20 Most Epic Photographs Ever Taken:20: Clone Army19: Designer Beachand this is how it was made!18: This is an aerial photograph of a river in Mexico taken by National Geographic! 17: This family had a bear as a pet and no it's not photoshopped.16: This is a photograph of a road painting. Talk about illusion!15: This is a photograph of two dogs in Phillipines that were born without the front legs. 14: This is a photograph of a lenticular cloud that formed in Damascus, Syria. This event happens when the clouds are positioned perpendicular to the wind direction and are often mistaken as UFOs.13: Again, this is not photoshopped. This immobile car is entirely made of wire-frames. Funny fact though, this car was also booked for not having number plates and for being parked on non-parking zone. :-P12: I call this image God's Bath-tub :-D11: This is an entrance to an art gallery. Pure Perfection!10: Illusion on the grass!and this is how it looks from different angle9: Way through the snow. Lot of snow.8: This was caused by a chemical reaction because of the rising waters.7: Ohh don't worry. Its a dead cat!6: Straight out of devil's inventory! A bathroom on top of elevator shaft with glass floor!5:Not Photoshopped! It's one single image!This Ship named as Pasha Bulka ran aground in Australia in 2007 and had reached within the spitting distance of this Australian community. The accident was due to bad weather.4: Science bitch! This 4-D shack is nothing but a shed that has its outer part covered with lot of strategically placed mirrors!3: This photograph is of a Shark eating a Dog Fish that is eating a Gold Fish! Holy Mother of Inception!2: Calm down. Calm down. It's not tsunami. Its fog!1: This lake in California has a scary looking drain which was built to maintain the water levels.
Why is there a circle drawn in the middle of benzene structure?
To draw a Benzene structure with the three lines is chemically wrong.The circle shows that the electrons within the structure are de-localised, whereas the lines show that there are three double covalent bonds (C=C x3) in the structure.In a bit more detail: The first structure in your question is benzene, because of the delocalised electrons and in 3-D this is what it looks like:The ring’s on top and bottom represent one molecular orbital. In simplest terms this is where the 6 delocalised electrons are found.Now the ultimate problem with your second structure is the double bonds. This is also known as the Kekulé structure. This reacts differently to benzene. As the Kekulé structure is shown to have three double bonds, it reacts like ethene, which undergoes the addition reaction where the double C=C bond is broken (making it C-C) and the electrons then form bonds with other atoms. After the reaction it’s known as a phenyl structure which looks like:The Addition Mechanism: Imagine this happening to one of the double bonds on the Kekulé structure.Benzene and Electrophillic Substitution:Benzene typically undergoes an electrophillic substitution with either Chlorine or Bromine in the presence of a catalyst (AlCl3 or AlBr3 respectively). Lets say benzene and chlorine react in the presence of AlCl3:So initially the reaction looks like this: C6H6 + Cl2 → C6H5Cl +HClThe Reaction:Stage One:Stage Two:Conclusion:As you can see, each structure reacts differently, specifically that the Kekulé reacts via Addition and Benzene via Electrophillic addition. That is why they are drawn differently, because they are represented differently in the mechanisms of their reaction which the diagrams show.I know it’s a bit much but this is the simplest I could put it as it’s too consice to just say “They react differently.” I thought it’d be best to provide diagrams as to why they react differently to give a much more specific understanding as to why they are represented different, I hope I have helped.Sources: I studied AQA A-Level Chemistry.Diagrams are from: the halogenation of benzenesp2 hybridisation and delocalisationI highly recommend chemguide: helping you to understand Chemistry it is a website made my a chemistry professor/teacher with easy methods to remember key facts you need for exams, helped me a lot through my struggles!
Which is better, science or commerce?
So here I suggest commerce as I am also a commerce student. So, the reason behind for choosing this stream have a vast reason for meI passed my 10th board exam in 2015–16 and secured 9.0 CGPA. And I was confusing to my aim and at last I decided commerce stream because of some reasonsAs we living in india , there is too much level of competition I have seen in science stream. In fact mostly all my friends are in science stream.You have to face NEET (entrance exam) for achieving admission in Medical college either it is government or private. I think it is most toughest exam I seen. Many of students waste their parents money in paying fees in coaching institiue for preparing to the NEET.Many of them were drop out and if they missed the 3 times chance to be passed in entrance exam they were totally disappointed.And next is that there is too much fees of medical institute so many students are in compulsion to take loans at higher rates.why commerce is better option ?Easy to be admitted in any collegeLow fees as comparison to medical collegeAnd of course easier way of gaining knowledge and building up a professionyou can also do a part time job for fulfillment of your personal needs instead of taking pocket money from parents, where in science stream you have to be fully devoted to studies.you started feeling experienced in this stream and can think beyond.You have more time to enjoying your younger era as comparison to scienceA one more big reasonA one more big reason is that when you are in 11th with science stream you have to face a bulky form of information like equations, formulae and much more useless whether that is neither important nor applicable in real life.On the other hand if you are in 11th with comerce you started experience like a businessman. Started learning realistic calculations that will sharpen your mind more than other. And after completing 12th Board seriously you are completely capacble for handle you own firm.Thanks for readingAnd sorry for weak pronunciations, I’m too weak in english basially I always prefer my native language HINDI.And I am not insist you to take commerce stream I am just expressing my views. And I’m not criticised Medical fiedls i just saying my opinions. It depends on your choice and interest.